Air expansion shaft for sheet curling

Abstract

The utility model provides an air swelling shaft for sheet curling, which comprises a mounting disc, a rotating shaft is fixedly mounted on one side of the mounting disc, a positioning rod with a U-shaped longitudinal section is fixedly mounted on the other side of the mounting disc, and guide units are symmetrically fixed on the inner concave surface of the positioning rod and positioned on two sides of the opening end of the positioning rod. The guide unit comprises guide pieces which are symmetrically and fixedly mounted on the inner concave surface of the positioning rod, and a clamping plate is fixed to the other ends of the two guide pieces; an infrared photoelectric sensor is fixedly mounted on the side, close to the positioning rod, of the mounting disc and located on the sides, close to each other, of the two clamping plates, a cavity is formed in the mounting disc, and a ventilation cavity is formed in the positioning rod. When the air expansion shaft is used for winding waterproof sheets, a paper shaft does not need to be arranged outside the air expansion shaft in a sleeving mode for winding the waterproof sheets, the situation that paper shaft waste products are generated after the waterproof sheets are used up is effectively avoided, the situation of material waste is effectively avoided, and the development requirements of saving and environmental protection are met.

Description

Technical Field

[0001] This utility model relates to the field of air shaft technology, specifically to an air shaft for sheet curling. Background Technology

[0002] Currently, after the waterproof sheet is processed, it needs to be rolled into rolls using a winding device for storage, so as to facilitate the storage and transportation of the waterproof sheet in the later stage.

[0003] Existing waterproof membrane rolls require a paper shaft as an internal fixing shaft during winding. In use, the paper shaft is tightened by the air-expansion shaft of the winding equipment, and the ends of the waterproof sheet are then bonded and fixed to the paper shaft. The winding equipment then rolls the sheet into a roll for easy storage and transportation. While this method can roll the waterproof sheet into a roll, it has the following drawbacks in practical use:

[0004] The paper rolls only serve a supporting function during the winding, storage, and transportation process. Once the waterproof membrane is used up, the paper rolls become waste, resulting in material waste and hindering the development needs of conservation and environmental protection.

[0005] Therefore, this application proposes an air shaft for sheet winding. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an air expansion shaft for sheet winding, which solves the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A pneumatic shaft for sheet winding includes a mounting plate. A rotating shaft is fixedly mounted on one side of the mounting plate, and a positioning rod with a U-shaped longitudinal section is fixedly mounted on the other side. Guide units are symmetrically fixed on both sides of the concave surface and the open end of the positioning rod. The guide unit includes guide members symmetrically fixedly mounted on the concave surface of the positioning rod, and a clamping plate is fixed to the other end of the two guide members.

[0009] An infrared photoelectric sensor is fixedly installed on the side of the mounting plate near the positioning rod and on the side where the two clamping plates are close to each other. The mounting plate has a cavity, the positioning rod has a venting cavity, and the mounting plate has a venting hole to connect the cavity and the venting cavity. The rotating shaft has a through hole, and the mounting plate has a through hole to connect the through hole to the cavity. Corrugated hoses connected to the venting cavity are symmetrically fixed on both sides of the concave surface of the positioning rod at its open end. The other ends of the two corrugated hoses are fixed to the two clamping plates respectively. An air supply assembly connected to the through hole is installed on the rotating shaft to supply gas into the through hole. A reset component connected to the clamping plate is installed on the concave surface of the positioning rod to allow the clamping plate to slide and reset along the guide.

[0010] Furthermore, the guide includes a housing fixedly installed on the concave surface of the positioning rod, and a guide rod that is fixedly connected to the clamping plate passes through the end of the housing.

[0011] Furthermore: the air supply assembly includes an air supply pipe fixedly installed at the end of the rotating shaft and connected to the through hole, and an air inlet pipe is fixedly installed at the end of the air supply pipe through a rotating joint.

[0012] Furthermore, the reset component includes a tension spring sleeved on the outside of the housing, with both ends of the tension spring fixedly connected to the inner concave surfaces of the clamping plate and the positioning rod, respectively.

[0013] Furthermore: the clamping plate includes a connecting plate fixedly connected to two guide rods. A receiving groove is provided on the side of the connecting plate away from the guide rods. Springs are symmetrically fixed on the connecting plate and located in the receiving groove. Contact plates are fixed at the ends of the two springs and located in the receiving groove. The outer side wall of the contact plate is in contact with the inner side wall of the receiving groove. A pressure sensor in contact with the contact plate is fixed in the receiving groove. The corrugated hose is fixedly connected to the connecting plate.

[0014] Furthermore: a vent pipe connected to the interior of the air supply pipe is fixedly installed on the air supply pipe, and an exhaust valve is fixedly installed at the end of the vent pipe away from the air supply pipe.

[0015] Furthermore: The mounting plate has symmetrically opened grooves on the side near the positioning rod and on the outside of the cavity. Sliding plates are slidably installed on the mounting plate and in the grooves along the direction of the positioning rod. Arc-shaped plates are fixedly installed on the two sliding plates and on the outside of the mounting plate. The two arc-shaped plates are symmetrically arranged. Adjusting components that act on the two sliding plates are installed on the mounting plate to make the two sliding plates slide closer or further apart in the two grooves respectively.

[0016] Furthermore: the adjusting component includes a bidirectional threaded rod rotatably mounted on the mounting plate, and the bidirectional threaded rod is threadedly connected to both sliding plates.

[0017] This invention provides an air shaft for sheet winding. Compared with the prior art, it has the following advantages:

[0018] 1. When the air expansion shaft of this utility model is used to roll up the waterproof sheet, it is not necessary to use a paper shaft sleeved on the outside of the air expansion shaft for the purpose of rolling up the waterproof sheet. This effectively avoids the situation of paper shaft waste after the waterproof sheet is used up, effectively avoids material waste, and is conducive to the development needs of saving and environmental protection.

[0019] 2. By setting up a vent pipe and an exhaust valve, after the air shaft has finished winding the waterproof sheet, the fixation of the air shaft to the end of the roll is removed. When the waterproof sheet is unloaded, the exhaust valve is opened. At this time, multiple tension springs return to their natural state, and the two corrugated hoses are compressed, so that the gas in the corrugated hoses can flow back into the vent chamber and be discharged through the vent hole, cavity, perforation, through hole, air supply pipe and vent pipe, so that the two clamping plates are reset, thereby removing the fixation to the end of the roll. The wound roll can then be pulled out from the outside of the air shaft for unloading without disconnecting the air inlet pipe from the external air pump, which makes it easy to remove the fixation of the air shaft to the end of the roll.

[0020] 3. By setting up arc-shaped plates and adjusting components, both arc-shaped plates are located outside the positioning rod. When the waterproof sheet is rolled up, the waterproof sheet is wrapped around the outside of the two arc-shaped plates. During use, the adjusting components allow the two sliding plates to slide closer or further apart within the two sliding grooves, thereby adjusting the distance between the two arc-shaped plates on the side that is further apart. Thus, when rolling up the sheet, the distance between the two arc-shaped plates on the side that is further apart can be adjusted according to the later usage requirements based on the inner diameter of the roll, improving applicability. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, 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.

[0022] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown;

[0023] Figure 2 A schematic diagram of the installation structure of the bidirectional threaded rod of this utility model is shown;

[0024] Figure 3 A schematic diagram of the installation structure of the gas supply assembly of this utility model is shown;

[0025] Figure 4 This utility model illustrates Figure 3Enlarged view of point A in the middle;

[0026] Figure 5 This utility model illustrates Figure 3 Enlarged view of point B in the middle;

[0027] The figure shows: 1. Mounting plate; 11. Cavity; 12. Vent hole; 13. Perforation; 14. Slide groove; 15. Sliding plate; 16. Arc plate; 17. Adjusting component; 171. Bidirectional threaded rod; 2. Rotating shaft; 21. Through hole; 3. Positioning rod; 31. Vent chamber; 32. Corrugated hose; 4. Guide component; 41. Housing; 42. Guide rod; 5. Clamping plate; 51. Connecting plate; 52. Receiving groove; 53. Spring; 54. Contact plate; 55. Pressure sensor; 6. Air supply assembly; 61. Air supply pipe; 611. Vent pipe; 612. Exhaust valve; 62. Rotary joint; 63. Air inlet pipe; 7. Reset component; 71. Tension spring; 8. Infrared photoelectric sensor. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] Example 1

[0030] To address the technical problems in the background art, the following air expansion shaft for sheet winding is provided:

[0031] Combination Figures 1-5 As shown, the present invention provides an air shaft for sheet winding, including a mounting plate 1. A rotating shaft 2 is fixedly installed on one side of the mounting plate 1, and a positioning rod 3 with a U-shaped longitudinal section is fixedly installed on the other side. When installing the air shaft, the rotating shaft 2 can be rotatably installed on the winding equipment. The installation structure of the rotating shaft 2 rotatably installed on the winding equipment is the prior art and is known to those skilled in the art, so it will not be described in detail here. The positioning rod 3 has guide units symmetrically fixed on both sides of its concave surface and its open end. The guide unit includes guide members 4 symmetrically fixedly installed on the concave surface of the positioning rod 3. The other end of the two guide members 4 is fixed with a clamping plate 5.

[0032] An infrared photoelectric sensor 8 is fixedly installed on the side of the mounting plate 1 near the positioning rod 3 and on the side where the two clamping plates 5 are close to each other. The infrared photoelectric sensor 8 is model E3F-DS30A1. A cavity 11 is opened in the mounting plate 1, and a venting cavity 31 is opened in the positioning rod 3. A venting hole 12 is opened on the mounting plate 1 to connect the cavity 11 and the venting cavity 31. A through hole 21 is opened on the rotating shaft 2, and a through hole 13 is opened on the mounting plate 1 to connect the through hole 21 and the cavity 11. Corrugated hoses 32, which are connected to the venting cavity 31, are symmetrically fixed on both sides of the concave surface of the positioning rod 3 and on both sides of its open end. The other ends of the two corrugated hoses 32 are respectively connected to the two clamping plates 5. The holding plates 5 are fixedly connected. An air supply component 6, connected to the through hole 21, is installed on the rotating shaft 2. This component supplies gas into the through hole 21. A reset component 7, connected to the holding plate 5, is installed on the concave surface of the positioning rod 3. This reset component 7 allows the holding plate 5 to slide and reset along the guide member 4. It is worth noting that the infrared photoelectric sensor 8 is communicatively connected to a PLC control system, and the PLC control system is also communicatively connected to the air supply component 6. During use, when fixing the end of the waterproof sheet to be rolled up, the end of the waterproof sheet is inserted through the opening end of the positioning rod 3 between the two holding plates 5 on their closest sides. During this time, the infrared photoelectric sensor 8 performs real-time detection of the proximity between the two holding plates 5. When the end of the waterproof sheet is inserted between the two holding plates 5... When the two clamping plates 5 approach each other on one side, the infrared photoelectric sensor 8 detects the waterproof sheet and feeds back the detection signal to the PLC control system. The PLC control system then controls the air supply component 6 to supply gas into the through hole 21. After entering the through hole 21, the gas passes through the perforation 13, cavity 11, vent hole 12, and vent cavity 31 in sequence into the two corrugated hoses 32. As the air supply component 6 continuously supplies gas into the through hole 21, the gas pressure increases as it flows into the two corrugated hoses 32. This causes the two clamping plates 5 to approach each other along the guide member 4. At this time, both corrugated hoses 32 deform, and the states of the two sets of reset members 7 change. The two clamping plates 5 approach each other along the guide member 4 and are in contact with the ends of the waterproof sheet. When contact is formed, the end of the waterproof sheet can be fixed. At this time, the rotating shaft 2 is rotated by the winding device, and the positioning rod 3 rotates around the rotating shaft 2, thereby achieving the effect of winding the waterproof sheet. When the waterproof sheet is finished being wound and is being unloaded, the air supply component 6 is separated from the rotating shaft 2, and the two sets of reset components 7 return to their original state. This allows the two clamping plates 5 to reset themselves along the guide component 4, and the gas in the corrugated hose 32 flows back to the venting chamber 31, and is discharged through the venting hole 12, cavity 11, perforation 13, and through hole 21. The two clamping plates 5 are reset, thereby removing the fixation on the end of the roll. The wound roll can then be pulled out from the outside of the air expansion shaft for unloading. In summary, the air expansion shaft of this utility model can effectively wind up waterproof sheets.This method eliminates the need for paper rolls to be attached to the outside of the air-expansion shaft for winding the waterproof sheet, effectively preventing the generation of waste paper rolls after the waterproof sheet is used. This avoids material waste and aligns with the development goals of conservation and environmental protection.

[0033] Example 2

[0034] like Figures 1-5 As shown, based on the above embodiments, this embodiment further provides the following:

[0035] In this embodiment, the guide member 4 includes a housing 41 fixedly installed on the concave surface of the positioning rod 3. The end of the housing 41 is movably connected to a guide rod 42 that is fixedly connected to the clamping plate 5. In use, when the two clamping plates 5 move closer or further away from each other along the guide member 4, the guide rod 42 slides along the housing 41 to the outside or inside, thereby achieving the guiding effect on the two clamping plates 5.

[0036] In this embodiment, the air supply assembly 6 includes an air supply pipe 61 fixedly installed at the end of the rotating shaft 2 and connected to the through hole 21. An air inlet pipe 63 is fixedly installed at the end of the air supply pipe 61 through a rotating joint 62. The air inlet pipe 63 is connected to an external air pump, and the external air pump is communicatively connected to the PLC control system. In use, when the PLC control system controls the air supply assembly 6 to work, it controls the external air pump to work and deliver gas to the air inlet pipe 63. After the gas enters the air inlet pipe 63, it enters the air supply pipe 61 through the rotating joint 62, and thus can be delivered to the through hole 21. The rotating joint 62 is designed so that when the rotating shaft 2 rotates on the winding equipment, the rotating joint 62 itself rotates without affecting the connection between the external air pump and the air inlet pipe 63. When it is necessary to remove the fixing of the air expansion shaft to the end of the roll material, the connection between the air inlet pipe 63 and the external air pump can be disconnected.

[0037] In this embodiment, the reset component 7 includes a tension spring 71 sleeved on the outside of the housing 41. The two ends of the tension spring 71 are fixedly connected to the inner concave surfaces of the clamping plate 5 and the positioning rod 3, respectively. In use, when the two clamping plates 5 move closer to each other along the guide 4 to clamp and fix the end of the waterproof sheet, the tension spring 71 deforms under force. When the connection between the air inlet pipe 63 and the external air pump is disconnected, the two tension springs 71 return to their natural state, so that the two clamping plates 5 move away from each other along the guide 4, thereby achieving the reset effect of the two clamping plates 5.

[0038] Example 3

[0039] like Figures 1-5 As shown, based on the above embodiments, this embodiment further provides the following:

[0040] In this embodiment, the clamping plate 5 includes a connecting plate 51 fixedly connected to two guide rods 42. A receiving groove 52 is formed on the side of the connecting plate 51 away from the guide rods 42. Springs 53 are symmetrically fixed on the connecting plate 51 and within the receiving groove 52. Contact plates 54 are fixed to the ends of the two springs 53 and within the receiving groove 52. The outer wall of the contact plate 54 is in contact with the inner wall of the receiving groove 52. A pressure sensor 55, model U5600, is fixed within the receiving groove 52 and is communicatively connected to the PLC control system. The corrugated hose 32 is fixedly connected to the connecting plate 51. During use, when the two clamping plates 5 approach each other along the guide 4 to clamp and fix the end of the waterproof sheet, the two contact plates 54 both come into contact with the waterproof sheet, thereby clamping and fixing the end of the waterproof sheet. During this period, the springs 53 in the two connecting plates 51 are deformed by force, and the contact plates 54 come into contact with the pressure sensor 55. The pressure sensor 55 changes the force detection signal, which is fed back to the PLC control system. The PLC control system controls the air pump to stop working, which is beneficial for clamping and fixing the end of the waterproof sheet.

[0041] In this embodiment, a vent pipe 611 connected to the interior of the air supply pipe 61 is fixedly installed on the air supply pipe 61. An exhaust valve 612 is fixedly installed at the end of the vent pipe 611 away from the air supply pipe 61. By setting the vent pipe 611 and the exhaust valve 612, after the air expansion shaft finishes winding the waterproof sheet, the fixation of the air expansion shaft to the end of the roll is removed. When the waterproof roll is unloaded, the exhaust valve 612 is opened. At this time, multiple tension springs 71 return to their natural state, and the two corrugated hoses 32 are compressed, so that the gas in the corrugated hoses 32 can flow back to the vent chamber 31, and then be discharged through the vent hole 12, cavity 11, perforation 13, through hole 21, air supply pipe 61 and vent pipe 611, so that the two clamping plates 5 are reset, thereby removing the fixation of the end of the roll. The wound roll can then be pulled out from the outside of the air expansion shaft for unloading without disconnecting the connection between the air inlet pipe 63 and the external air pump, which facilitates the removal of the fixation of the air expansion shaft to the end of the roll.

[0042] In this embodiment, the mounting plate 1 has symmetrically arranged grooves 14 on the side near the positioning rod 3 and on the outer side of the cavity 11. Sliding plates 15 are slidably mounted on the mounting plate 1 and within the grooves 14 along the direction of the positioning rod 3. Arc-shaped plates 16 are fixedly mounted on both sliding plates 15 and on the outer side of the mounting plate 1. The two arc-shaped plates 16 are symmetrically arranged. Adjusting members 17 acting on the two sliding plates 15 are installed on the mounting plate 1, which are used to make the two sliding plates 15 slide closer or further apart within the two grooves 14 respectively. This is achieved by setting the arc-shaped plates 16... 6 and adjusting component 17, both arc-shaped plates 16 are located outside the positioning rod 3. When the waterproof sheet is rolled up, the waterproof sheet is wrapped around the outside of the two arc-shaped plates 16. In use, the adjusting component 17 makes the two sliding plates 15 slide closer or further away from each other in the two sliding grooves 14 respectively, so that the distance between the two arc-shaped plates 16 on the side away from each other can be adjusted. Thus, when the sheet is rolled up, the distance between the two arc-shaped plates 16 on the side away from each other can be adjusted according to the later use requirements based on the inner hole diameter of the roll, thereby improving applicability.

[0043] In this embodiment, the adjusting member 17 includes a bidirectional threaded rod 171 rotatably mounted on the mounting plate 1. The bidirectional threaded rod 171 is threadedly connected to both sliding plates 15. In use, a force is applied to the bidirectional threaded rod 171 to make it rotate on the mounting plate 1, thereby allowing the two sliding plates 15 to slide closer to or further away from each other in the two sliding grooves 14 respectively. The operation is simple.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An air shaft for sheet winding, characterized in that: The device includes a mounting plate (1), on one side of which a rotating shaft (2) is fixedly installed, and on the other side a positioning rod (3) with a U-shaped longitudinal section is fixedly installed. The positioning rod (3) has guide units symmetrically fixed on both sides of its concave surface and its open end. The guide unit includes guide parts (4) symmetrically fixedly installed on the concave surface of the positioning rod (3). The other ends of the two guide parts (4) are fixed with clamping plates (5). An infrared photoelectric sensor (8) is fixedly installed on the side of the mounting plate (1) near the positioning rod (3) and on the side where the two clamping plates (5) are close to each other. A cavity (11) is opened in the mounting plate (1), a venting cavity (31) is opened in the positioning rod (3), and a venting hole (12) is opened on the mounting plate (1) to connect the cavity (11) and the venting cavity (31). A through hole (21) is opened on the rotating shaft (2), and a through hole (13) is opened on the mounting plate (1) to connect the through hole (21) and the cavity (31). The cavity (11) is connected. The inner concave surface of the positioning rod (3) and the two sides of its opening end are symmetrically fixed with corrugated hoses (32) that are connected to the ventilation cavity (31). The other ends of the two corrugated hoses (32) are respectively fixed to the two clamping plates (5). The rotating shaft (2) is equipped with an air supply component (6) that is connected to the through hole (21), which is used to supply gas into the through hole (21). The inner concave surface of the positioning rod (3) is equipped with a reset component (7) that is connected to the clamping plate (5), which is used to make the clamping plate (5) slide and reset along the guide (4).

2. The air shaft for sheet winding according to claim 1, characterized in that: The guide member (4) includes a housing (41) fixedly installed on the concave surface of the positioning rod (3), and a guide rod (42) that is fixedly connected to the clamping plate (5) is movably passed through the end of the housing (41).

3. The air shaft for sheet winding according to claim 1, characterized in that: The air supply assembly (6) includes an air supply pipe (61) fixedly installed at the end of the rotating shaft (2) and connected to the through hole (21). An air inlet pipe (63) is fixedly installed at the end of the air supply pipe (61) through a rotating joint (62).

4. The air shaft for sheet winding according to claim 2, characterized in that: The reset component (7) includes a tension spring (71) sleeved on the outside of the housing (41), with both ends of the tension spring (71) fixedly connected to the inner concave surfaces of the clamping plate (5) and the positioning rod (3), respectively.

5. The air shaft for sheet winding according to claim 2, characterized in that: The clamping plate (5) includes a connecting plate (51) fixedly connected to two guide rods (42). A receiving groove (52) is provided on the side of the connecting plate (51) away from the guide rods (42). Springs (53) are symmetrically fixed on the connecting plate (51) and located in the receiving groove (52). A contact plate (54) is fixed at the end of the two springs (53) and located in the receiving groove (52). The outer side wall of the contact plate (54) is in contact with the inner side wall of the receiving groove (52). A pressure sensor (55) in contact with the contact plate (54) is fixed in the receiving groove (52). A corrugated hose (32) is fixedly connected to the connecting plate (51).

6. The air shaft for sheet winding according to claim 3, characterized in that: An air vent (611) connected to the interior of the air supply pipe (61) is fixedly installed on the air supply pipe (61), and an exhaust valve (612) is fixedly installed at the end of the air vent (611) away from the air supply pipe (61).

7. The air shaft for sheet winding according to claim 1, characterized in that: The mounting plate (1) has symmetrically provided sliding grooves (14) on the side near the positioning rod (3) and on the outside of the cavity (11). Sliding plates (15) are slidably installed on the mounting plate (1) and in the sliding grooves (14) along the direction of the positioning rod (3). Arc plates (16) are fixedly installed on the two sliding plates (15) and on the outside of the mounting plate (1). The two arc plates (16) are symmetrically arranged. An adjusting component (17) is installed on the mounting plate (1) to act on the two sliding plates (15), which is used to make the two sliding plates (15) slide closer or further away from each other in the two sliding grooves (14).

8. The air shaft for sheet winding according to claim 7, characterized in that: The adjusting component (17) includes a bidirectional threaded rod (171) rotatably mounted on the mounting plate (1), and the bidirectional threaded rod (171) is threadedly connected to both sliding plates (15).

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