A top expansion device

Abstract

The present invention relates to the technical field of coiling materials, and discloses a jacking expansion device, including a jacking expansion tube body and an extrusion piece arranged at both ends of the jacking expansion tube body, wherein the jacking expansion tube body and the extrusion piece are arranged coaxially, and the jacking expansion tube body includes more than two arc-shaped components, and the more than two arc-shaped components are connected to form a ring-shaped jacking expansion tube body, and the extrusion piece can extend into the jacking expansion tube body to extrude the inner side of the arc-shaped component, so that after the jacking expansion tube body is expanded, the more than two arc-shaped components are enclosed to form a perfect circle. When the extrusion piece is released to squeeze the two ends of the jacking expansion tube body, the jacking expansion tube body shrinks, and the more than two arc-shaped components are translated inward to enclose to form a non-circular shape. Through the above arrangement, the initial state of the jacking expansion tube body is not a circle, and after the radius is enlarged by extrusion, it becomes a circle, which has a better winding effect.

Description

Technical Field

[0001] The invention belongs to the technical field of coiled materials, and in particular relates to a jacking device. Background Art

[0002] The fields involved in coil materials are very wide, such as die-cutting, slitting, laminating, rewinding, printing, laminating, labeling, winding, automatic packaging and sealing, and milk tea machine sealing equipment, all of which require winding of edge materials or waste materials.

[0003] At present, when curling waste is collected in production, paper tubes or plastic tubes are used to collect the curling waste, and the curling waste is wrapped around the paper tubes or plastic tubes. However, after this operation, it is inconvenient to separate the curling waste. If you want to separate the curling waste, you need to use a blade or scissors to remove it, which not only easily damages the blade and causes waste of the blade, but also increases labor and working hours costs, and the purity of the removed waste is not high, reducing the value of secondary utilization. If the curling waste is not separated, not only will the secondary utilization value of the curling waste be reduced, but also the paper tubes or plastic tubes will be wasted, making the paper tubes or plastic tubes lose the value of multiple reuses, resulting in a waste of resources. Summary of the invention

[0004] In order to solve the above technical problems, the inventors have found that if there is a top expansion tube whose radius can be enlarged or reduced, it can be used on a matching production machine, and its radius can be enlarged by extrusion, and then the curling waste can be wrapped around the top expansion tube with the enlarged radius; when removing the curling waste, it is only necessary to release the extrusion of the top expansion tube to restore its radius to its initial state, thereby achieving the separation of the curling waste from the top expansion tube, and then remove the curling waste. After the curling waste is separated from the machine equipment, the integrity of the curling waste is well guaranteed, and the curling waste can be used as valuable as possible. Moreover, the top expansion tube can be used repeatedly, which is energy-saving and environmentally friendly. In addition, collecting the curling waste in this way saves working hours, improves work efficiency, and reduces the use of blades or scissors, and does not cause damage to the blades or scissors and cause waste of tools.

[0005] However, the inventors further discovered that the original expansion tube was designed to be circular in its initial state, but it was not circular after the radius was enlarged by extrusion, which affected the winding effect of the waste material.

[0006] In order to achieve a better winding effect, the primary purpose of the present invention is to provide a top expansion device, the initial state of the top expansion tube body of which is not circular, but is expanded by extrusion to form a circular shape, thereby achieving a better winding effect.

[0007] To achieve the above object, the technical solution of the present invention is as follows:

[0008] A jacking expansion device includes a jacking expansion tube body and extrusion pieces arranged at both ends of the jacking expansion tube body, the jacking expansion tube body and the extrusion piece are coaxially arranged, the jacking expansion tube body includes more than two arc-shaped components, and the more than two arc-shaped components are connected to form a ring-shaped jacking expansion tube body, and the extrusion piece can extend into the jacking expansion tube body to extrude the inner side surface of the arc-shaped component, so that after the jacking expansion tube body is expanded, the more than two arc-shaped components are surrounded to form a perfect circle. In the present invention, since the top expansion tube body is connected by more than two arc-shaped components, and the curvature of the arc-shaped components is fixed, it is necessary to make the top expansion tube body expand into a perfect circle. Therefore, it is necessary for more than two arc-shaped components to be opened outward and connected to form a perfect circle. Then, when the extrusion of the two ends of the top expansion tube body by the extrusion piece is released, the top expansion tube body shrinks, and the more than two arc-shaped components translate inward, the radius changes, and the curvature cannot be changed to form a non-circular shape. Through the above arrangement, the initial state of the top expansion tube body is not a circle, and after the radius is enlarged by extrusion, it becomes a circle, which has a better rolling effect.

[0009] Furthermore, the contact surface of the extrusion piece for extruding the top expansion tube body is circular. When the extrusion piece expands the top expansion tube body to the maximum, the curvature of the contact surface of the extrusion piece is consistent with the curvature of the inner side surface of the arc-shaped member, and the contact surface of the extrusion piece is tightly fitted with the inner side surfaces of more than two arc-shaped members. In the present invention, the inner circle and the outer circle of the expanded top expansion tube body are concentric circles. Through the above arrangement, the two or more arc-shaped members enclose the top expansion tube body after expansion to form a perfect circle, which has a better rolling effect.

[0010] Furthermore, each arc-shaped component includes an arc-shaped unit piece and a baffle fixed to the upper end and / or lower end of the arc-shaped unit piece, and a movable connection structure is arranged between every two adjacent arc-shaped unit pieces, and the movable connection structure includes a matching movable block and a movable groove, and the movable block and the movable groove are respectively arranged on two adjacent arc-shaped unit pieces, and the upper end and / or lower end of the movable groove where the baffle is fixed is provided with an opening, and the movable block is inserted into the movable groove from the opening of the movable groove, and the movable block can move within the range of the movable groove so as to increase or decrease the radius of the top expansion tube body, and the baffle at the upper end and / or lower end of the arc-shaped unit piece can block the opening of the movable groove, thereby preventing the movable block from moving up and down, and limiting the movable block in the movable groove.

[0011] In the present invention, by setting the movable block and the movable groove, the range of change of the radius of the top expansion tube body can be better limited, so that the position of the arc unit piece is not easy to deviate. During assembly, the movable block is first inserted into the movable groove, and then fixed by the baffle to block the opening of the movable groove, which can prevent the movable block from moving up and down to form dislocation, and the limiting effect is better.

[0012] Furthermore, the upper and lower ends of the movable groove are both provided with openings, the upper and lower ends of the arc-shaped unit sheet are both fixed with the baffle that can block the opening, and the bottom of the baffle is provided with a slot with an L-shaped side, the slot can clamp the inner edge of the arc-shaped member, and the contact surface of the extrusion piece is tightly fitted with the inner side of the baffle. In the present invention, the setting of the L-shaped slot can facilitate the fixation of the baffle and the arc-shaped member, and the structure is more stable. The extrusion piece squeezes the baffle to enlarge the radius of the top expansion tube body to form a perfect circle, which has a better rolling effect.

[0013] Furthermore, the movable block includes a movable part and a connecting part, one end of the connecting part is fixedly connected to the arc-shaped unit sheet, and the other end of the connecting part is fixedly connected to the movable part, and the movable part is located in the movable groove; the width of the movable part is larger than the width of the connecting part, so that the cross-section of the movable block in a top view is a T-shaped structure, and a slot is provided on one side of the movable groove relative to the movable block, the width of the movable slot is adapted to the movable part, and the width of the slot is adapted to the connecting part. In the present invention, through the above arrangement, it is more convenient to realize that the movable block can slide in the movable groove while being limited within the range of the movable groove and will not slide out.

[0014] Furthermore, the inner side surface of the baffle is provided with a serrated groove. In the present invention, the serrated groove on the arc surface of the baffle can achieve a better bite effect, will not slip, will not slide out when squeezing into the top expansion tube, can be squeezed more stably, and the radius of the top expansion tube body becomes larger.

[0015] Furthermore, the outer side surface of the baffle connected to each arc-shaped unit sheet is provided with an arc-shaped guide groove, and the arc-shaped guide groove of each baffle is enclosed to form a circle of accommodation space, and an elastic band is arranged in the accommodation space, so that the elastic band is sleeved in the arc-shaped guide groove on the outer side of the baffle of the top expansion tube body. In the present invention, adding the elastic band can bring about the effect of elastic reset, and the elastic band is arranged in the accommodation space enclosed by the arc-shaped guide groove to prevent it from deviating from the position when the top expansion tube body expands or contracts. By using the movable connection structure in conjunction with the elastic band, a better limiting effect can be achieved.

[0016] Furthermore, the outer side of the arc-shaped unit sheet is provided with a sawtooth groove. In the present invention, the arrangement of the sawtooth groove on the outer side of the arc-shaped unit sheet facilitates the coil to be rolled up more stably.

[0017] Furthermore, the size of the baffle plate is adapted to the size of the upper surface or lower surface of the arc-shaped unit piece connected thereto, the upper end and / or the lower end of the arc-shaped unit piece is provided with a threaded hole, and the baffle plate is provided with a through hole corresponding to the position of the threaded hole. In the present invention, the baffle plate and the arc-shaped unit piece are fixedly connected by screws passing through the through holes of the baffle plate and being fixed in the threaded holes. Through the above-mentioned structural setting, the connection relationship between the arc-shaped unit piece and the baffle plate is more stable.

[0018] Furthermore, the position of the baffle plate corresponding to the movable groove is provided with a limiting groove, so that the upper end and / or the lower end of the movable block can be held in the limiting groove. In the present invention, the movable block can be better limited to prevent it from being misplaced by providing the limiting groove.

[0019] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention overcomes the existing technical prejudices in the industry, and by calculating a suitable curvature, the initial state of the top expansion tube body is not circular, but becomes circular after being squeezed and expanded, thereby achieving a better rolling effect;

[0020] The present invention can also better limit the range of change of the radius of the top expansion tube body through the arrangement of the movable block and the movable groove, so that the position of the arc-shaped unit piece is not easily deviated. During assembly, the movable block is first inserted into the movable groove, and then fixed by a baffle to block the opening of the movable groove, which can prevent the movable block from moving up and down to form a misalignment, and the limiting effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the top expansion pipe body of Example 1 of the present invention.

[0022] Figure 2 It is a schematic diagram of a first decomposition method of the top expansion pipe body of Example 1 of the present invention.

[0023] Figure 3 It is a schematic diagram of the second decomposition method of the top expansion pipe body of Example 1 of the present invention.

[0024] Figure 4 It is a schematic structural diagram of the arc-shaped unit piece of the top expansion tube body in Example 1 of the present invention.

[0025] Figure 5 It is a schematic diagram of the structure of the jacking device using four arc-shaped components according to the present invention.

[0026] Figure 6 It is a schematic structural diagram of the top expansion pipe body of Example 2 of the present invention.

[0027] Figure 7 It is a top view of the top expansion tube body of Example 2 of the present invention when it is expanded.

[0028] Figure 8 It is a comparative schematic diagram of the expansion and contraction of the four arc-shaped components of Example 2 of the present invention.

[0029] Fig. 9 It is a schematic diagram of the exploded view of the top expansion pipe body of Example 2 of the present invention.

[0030] Fig.10 It is a schematic structural diagram of the arc-shaped unit piece of the top expansion tube body of Example 2 of the present invention.

[0031] Fig.11 It is a schematic structural diagram of the arc-shaped unit sheet and the extrusion piece of Example 2 of the present invention.

[0032] Fig.12 It is a schematic diagram of the structure of the jacking expansion device using 8 arc-shaped components according to the present invention.

[0033] Fig.13 It is a schematic structural diagram of the top expansion tube body of Example 3 of the present invention.

[0034] Fig.14 It is a top view of the top expansion tube body of Example 3 of the present invention when it is expanded.

[0035] Fig.15 It is a schematic structural diagram of the upper end baffle of the top expansion tube body of Example 3 of the present invention when it is disassembled.

[0036] Fig.16 It is a schematic diagram of the exploded view of the top expansion tube body of Example 3 of the present invention.

[0037] Fig.17 It is a schematic structural diagram of the arc-shaped unit piece of the top expansion tube body of Example 3 of the present invention.

[0038] In the figure, the arc-shaped unit sheet 1; the movable block 11; the movable portion 111; the connecting portion 112; the movable groove 12;

[0039] Slot 121; threaded hole 13; fixing slot 14; baffle 2; slot 21; fixing column 22; limiting slot

[0040] 23; elastic band 3; hollow tube 4; extrusion piece 5; serrated groove 10; perforation 20; arc-shaped guide groove 30. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0044] The jacking device implemented by the present invention includes at least the following embodiments:

[0045] Embodiment 1:

[0046] See also Figure 1-4 As shown, this embodiment provides a top expansion device, including a top expansion tube body and extrusion pieces 5 arranged at both ends of the top expansion tube body, the top expansion tube body and the extrusion piece 5 are coaxially arranged, the top expansion tube body includes three arc-shaped components, and the three arc-shaped components are connected to form a ring-shaped top expansion tube body, the extrusion piece 5 can extend into the top expansion tube body to extrude the inner side surface of the arc-shaped component, so that after the top expansion tube body is expanded, the three arc-shaped components are surrounded to form a perfect circle. In the present invention, since the top expansion tube body is connected by three arc-shaped components, and the curvature of the arc-shaped components is fixed, it is necessary to make the top expansion tube body expand into a perfect circle. Therefore, the three arc-shaped components need to be opened outward and connected to form a perfect circle. Then, when the extrusion piece 5 is released to squeeze the two ends of the top expansion tube body, the top expansion tube body shrinks, and the three arc-shaped components translate inward and approach each other, the radius changes, and the curvature cannot be changed to enclose a non-circular shape. Through the above arrangement, the initial state of the top expansion tube body is not a circle, and after extrusion, its radius is enlarged to form a circle, which has a better rolling effect.

[0047] Among them, the contact surface of the extrusion piece 5 for extruding the top expansion tube body is circular. When the extrusion piece 5 expands the top expansion tube body to the maximum, the curvature of the contact surface of the extrusion piece 5 is consistent with the curvature of the inner side surface of the arc-shaped member, and the contact surface of the extrusion piece 5 is tightly fitted with the inner side surfaces of the three arc-shaped members. In the present invention, the inner circle and the outer circle of the expanded top expansion tube body are concentric circles. Through the above arrangement, the three arc-shaped members enclose a perfect circle after the top expansion tube body is expanded, which has a better winding effect.

[0048] Embodiment 2:

[0049] See also Figure 5-11 As shown, this embodiment provides a top expansion device, including a top expansion tube body and an extrusion piece 5 arranged at both ends of the top expansion tube body, the top expansion tube body and the extrusion piece 5 are arranged coaxially, the top expansion tube body includes four arc-shaped members, the four arc-shaped members are connected to form an annular top expansion tube body, the extrusion piece 5 can extend into the top expansion tube body to extrude the inner side of the arc-shaped member, so that after the top expansion tube body is expanded, the four arc-shaped members are enclosed to form a perfect circle. In the present invention, since the top expansion tube body is connected by four arc-shaped members, and the curvature of the arc-shaped members is fixed, it is necessary to make the top expansion tube body into a perfect circle after expansion, so that the four arc-shaped members need to be opened outward and connected to form a perfect circle, then when the extrusion piece 5 is released to squeeze the two ends of the top expansion tube body, the top expansion tube body shrinks, the four arc-shaped members translate inwardly to approach each other, the radius changes, and the curvature cannot be changed to enclose a non-circular shape. The schematic diagram of the comparison of the expansion and contraction of the four arc-shaped members of this embodiment can be seen. Figure 8 Through the above arrangement, the initial state of the top expansion tube body is not circular, and after being extruded to enlarge its radius, it becomes circular, which has a better rolling effect.

[0050] Among them, the contact surface of the extrusion piece 5 for extruding the top expansion tube body is circular. When the extrusion piece 5 expands the top expansion tube body to the maximum, the curvature of the contact surface of the extrusion piece 5 is consistent with the curvature of the inner side surface of the arc-shaped member, and the contact surface of the extrusion piece 5 is tightly fitted with the inner side surfaces of the four arc-shaped members. In the present invention, the inner circle and the outer circle of the expanded top expansion tube body are concentric circles. Through the above arrangement, the four arc-shaped members enclose a perfect circle after the top expansion tube body is expanded, which has a better winding effect.

[0051] Embodiment 3:

[0052] See also Figure 12-17As shown, a jacking expansion device includes a jacking expansion tube body and extrusion pieces 5 arranged at both ends of the jacking expansion tube body. The jacking expansion tube body and the extrusion piece 5 are coaxially arranged. The jacking expansion tube body includes 8 arc-shaped components. The 8 arc-shaped components are connected to form a ring-shaped jacking expansion tube body. The extrusion piece 5 can extend into the jacking expansion tube body to extrude the inner side surface of the arc-shaped component, so that after the jacking expansion tube body is expanded, the 8 arc-shaped components are enclosed to form a perfect circle. In the present invention, since the top expansion tube body is connected by 8 arc-shaped components, and the curvature of the arc-shaped components is fixed, it is necessary to make the top expansion tube body expand into a perfect circle. Therefore, the 8 arc-shaped components need to be opened outward and connected to form a perfect circle. When the extrusion piece 5 is released to squeeze the two ends of the top expansion tube body, the top expansion tube body shrinks, and the 8 arc-shaped components move inward and approach each other, the radius changes, and the curvature cannot be changed to form a non-circular shape. Through the above arrangement, the initial state of the top expansion tube body is not a circle, and after the radius is enlarged by extrusion, it becomes a circle, which has a better rolling effect.

[0053] Among them, the contact surface of the extrusion piece 5 for extruding the top expansion tube body is circular. When the extrusion piece 5 expands the top expansion tube body to the maximum, the curvature of the contact surface of the extrusion piece 5 is consistent with the curvature of the inner side surface of the arc-shaped member, and the contact surface of the extrusion piece 5 is tightly fitted with the inner side surfaces of the eight arc-shaped members. In the present invention, the inner circle and the outer circle of the expanded top expansion tube body are concentric circles. Through the above arrangement, the eight arc-shaped members enclose a perfect circle after the top expansion tube body is expanded, which has a better winding effect.

[0054] See also Figure 1-17As shown, in embodiments 1-3, preferably, each arc-shaped component includes an arc-shaped unit piece 1 and a baffle 2 fixed to the upper and lower ends of the arc-shaped unit piece 1, a movable block 11 is provided on one side of each arc-shaped unit piece 1, and a movable groove 12 adapted to the movable block 11 is provided on the other side, the movable block 11 of each arc-shaped unit piece 1 is movably connected with the movable groove 12 of another arc-shaped unit piece 1, and the movable block 11 and the movable groove 12 between every two adjacent arc-shaped unit pieces 1 form a movable connection structure, the upper and lower ends of the movable groove 12 are provided with openings, the movable block 11 is inserted into the movable groove 12 from the opening of the movable groove 12, and the movable block 11 can be The movable block 11 can move within the range of the movable groove 12 to increase or decrease the radius of the top expansion tube body. The baffles 2 at the upper and lower ends of each arc-shaped unit piece 1 can block the opening of the movable groove 12, thereby preventing the movable block 11 from moving up and down, and limiting the movable block 11 in the movable groove 12; in this embodiment, through the arrangement of the movable block 11 and the movable groove 12, the range of change of the radius of the top expansion tube body can be better limited, so that the position of the arc-shaped unit piece 1 is not easy to deviate. During assembly, the movable block 11 is first inserted into the movable groove 12, and then fixed by the baffle 2 to block the opening of the movable groove 12, which can prevent the movable block 11 from moving up and down to form a misalignment, and the limiting effect is better.

[0055] See also Figure 5-17 As shown, in Embodiment 2-3, preferably, a groove 21 with an L-shaped side surface is provided at the bottom of the baffle 2, and the groove 21 can clamp the inner edge of the arc-shaped member, and the contact surface of the extrusion member 5 is closely fitted with the inner side surface of the baffle 2. In this embodiment, the setting of the L-shaped groove 21 can facilitate the fixation of the baffle 2 and the arc-shaped member, and the structure is more stable. The extrusion member 5 squeezes the baffle 2 to enlarge the radius of the top expansion tube body to form a perfect circle, which has a better winding effect.

[0056] See also Figure 1-17 As shown, in embodiments 1-3, preferably, the movable block 11 includes a movable portion 111 and a connecting portion 112, one end of the connecting portion 112 is fixedly connected to the arc-shaped unit sheet 1, and the other end of the connecting portion 112 is fixedly connected to the movable portion 111, and the movable portion 111 is located in the movable groove 12; the width of the movable portion 111 is larger than the width of the connecting portion 112, so that the cross-section of the movable block 11 in a top view is a T-shaped structure, and a slot 121 is provided on one side of the movable groove 12 relative to the movable block 11, and the width of the movable groove 12 is adapted to the movable portion 111, and the width of the slot 121 is adapted to the connecting portion 112. In this embodiment, through the above-mentioned arrangement, it is more convenient to realize that the movable block 11 can be limited within the range of the movable groove 12 while sliding in the movable groove 12 and will not slide out.

[0057] See also Figure 5-17As shown, in Embodiment 2-3, preferably, the inner side surface of the baffle plate 2 is provided with a serrated groove 10. In this embodiment, the serrated groove 10 on the arc surface of the baffle plate 2 can achieve a better bite effect, and will not slip. When squeezing into the top expansion tube body, it will not slide out, and can be squeezed more stably, so that the radius of the top expansion tube body becomes larger.

[0058] See also Figure 1-17 As shown, in embodiments 1-3, preferably, an arc-shaped guide groove 30 is provided on the outer side of the baffle 2 connected to each arc-shaped unit sheet 1, and the arc-shaped guide groove 30 of each baffle 2 encloses a circle of accommodation space, and elastic bands 3 are provided in the accommodation spaces at the upper and lower ends of the top expansion tube body, so that the elastic bands 3 are sleeved in the arc-shaped guide grooves 30 at the upper and lower ends of the outer side of the baffle 2 of the top expansion tube body. In the embodiment, adding the elastic band 3 can bring about the effect of elastic reset, and the elastic band 3 is arranged in the accommodation space enclosed by the arc-shaped guide groove 30 to prevent it from deviating from its position when the top expansion tube body expands or contracts. By using the movable connection structure in conjunction with the elastic band 3, a better limiting effect can be achieved.

[0059] See also Figure 1-17 As shown, in embodiments 1-3, preferably, the outer side of the arc-shaped unit sheet 1 is provided with a sawtooth groove 10. In this embodiment, by providing the sawtooth groove 10 on the outer side of the arc-shaped unit sheet 1, the coil can be rolled up more stably.

[0060] See also Figure 1-17 As shown, in embodiments 1-3, preferably, the size of the baffle plate 2 is adapted to the size of the upper surface or lower surface of the arc-shaped unit sheet 1 to which it is connected, threaded holes 13 are provided at the upper and lower ends of the arc-shaped unit sheet 1, and the baffle plate 2 is provided with through holes 20 corresponding to the positions of the threaded holes 13.

[0061] See also Figure 1-4 As shown, in Embodiment 1, preferably, a fixing column 22 is further provided in the middle of one side of the baffle plate 2 relative to the arc-shaped unit piece 1, and a fixing groove 14 is provided at the upper end and the lower end of the arc-shaped unit piece 1 relative to the fixing column 22. In this embodiment, the fixing column 22 is inserted into the fixing groove 14, and then the screw is passed through the through hole 20 of the baffle plate 2 and fixed in the threaded hole 13 to realize the fixed connection between the baffle plate 2 and the arc-shaped unit piece 1. Through the above-mentioned structural setting, the connection relationship between the arc-shaped unit piece 1 and the baffle plate 2 is more stable.

[0062] See also Figure 1-17 As shown, in embodiments 1-3, preferably, the position of the baffle plate 2 corresponding to the movable groove 12 is correspondingly provided with a limiting groove 23, so that the upper end and the lower end of the movable block 11 can be held in the limiting groove 23. In this embodiment, by providing the limiting groove 23, the movable block 11 can be better limited to prevent it from being misplaced.

[0063] In the present invention, see Figure 5 , 11 As shown in FIG. 12, when the jacking expansion device is working, a hollow tube 4 is connected to the hollow structure of the jacking expansion tube body, the hollow tube 4 passes through the jacking expansion tube body, and both ends of the hollow tube 4 extend out of the upper and lower ends of the jacking expansion tube body, the upper part of the extrusion member 5 is cylindrical, and the lower part of the extrusion member 5 is a conical structure. After the extrusion member 5 passes through the connecting pipe, it extends into the jacking expansion tube body through the conical structure at its lower part, and then gradually squeezes the jacking expansion tube body to increase its radius. The hollow tube 4 is driven to rotate by the motor, thereby driving the top expansion tube body to rotate to realize the winding of the coiled material. During operation, the top expansion tube body is extruded by the extrusion piece 5 to increase its radius, and then the curled waste is wound around the top expansion tube body with the increased radius; when removing the curled waste, it is only necessary to loosen the extrusion of the extrusion piece 5 on both ends of the top expansion tube body, and under the action of the movable connection structure and the elastic band 3, the radius of the top expansion tube body is restored to its initial state, thereby achieving the separation of the curled waste from the top expansion tube body, and then the curled waste can be easily removed; wherein, the surface of the top expansion tube body can be treated with anti-sticking, such as spraying anti-sticking oil or adding a layer of non-glue isolation film on the surface of the top expansion tube body to separate the glued edge waste, so that the separation of the edge waste from the top expansion tube body is easier.

[0064] In the prior art, similar expansion devices for winding are designed to be circular in the initial state due to inertial thinking. In actual use, they will become non-circular after expansion, affecting the winding effect. In actual production, technicians will take it for granted that the initial state of the expansion tube body will be circular. Therefore, the present invention overcomes the existing technical prejudice in the industry. By calculating the appropriate curvature, the initial state of the expansion tube body is not circular, and it becomes circular after being squeezed and expanded, thereby achieving a better winding effect.

[0065] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A jacking device, characterized in that: The jacking expansion device comprises an jacking expansion tube body and extrusion pieces arranged at both ends of the jacking expansion tube body, the jacking expansion tube body and the extrusion piece are arranged coaxially, the jacking expansion tube body comprises more than two arc-shaped components, and the more than two arc-shaped components are connected to form a ring-shaped jacking expansion tube body, and the extrusion piece can extend into the jacking expansion tube body to extrude the inner side of the arc-shaped component, so that after the jacking expansion tube body is expanded, the more than two arc-shaped components are surrounded to form a perfect circle; The contact surface of the extrusion piece for extruding the top expansion tube body is circular. When the extrusion piece expands the top expansion tube body to the maximum, the curvature of the contact surface of the extrusion piece is consistent with the curvature of the inner side surface of the arc-shaped member. The contact surface of the extrusion piece is tightly fitted with the inner side surfaces of more than two arc-shaped members. Each arc-shaped member includes an arc-shaped unit piece and a baffle fixed to the upper end and / or the lower end of the arc-shaped unit piece. A movable connection structure is provided between every two adjacent arc-shaped unit pieces. The movable connection structure includes a matching movable block and a movable groove. The movable block and the movable groove are respectively provided on two adjacent arc-shaped unit pieces. The upper end and / or the lower end of the movable groove where the baffle is fixed is provided with an opening. The movable block is inserted into the movable groove from the opening of the movable groove. The movable block can move within the range of the movable groove to increase or decrease the radius of the top expansion tube body. The baffle at the upper end and / or the lower end of the arc-shaped unit piece can block the opening of the movable groove. A hollow tube is also connected inside the hollow structure of the top expansion tube body.

2. The expansion device according to claim 1, characterized in that: The upper and lower ends of the movable groove are both provided with openings, the upper and lower ends of the arc-shaped unit sheet are fixed with the baffle plate capable of blocking the openings, and the bottom of the baffle plate is provided with a slot with an L-shaped side surface, the slot can clamp the inner edge of the arc-shaped component, and the contact surface of the extrusion piece is tightly fitted with the inner side surface of the baffle plate.

3. The expansion device according to claim 1, characterized in that: The movable card block includes a movable part and a connecting part, one end of the connecting part is fixedly connected to the arc-shaped unit sheet, and the other end of the connecting part is fixedly connected to the movable part, and the movable part is located in the movable groove; the width of the movable part is larger than the width of the connecting part, so that the cross-section of the movable card block in a top view angle is a T-shaped structure, and a groove is provided on one side of the movable groove relative to the movable card block, the width of the movable groove is adapted to the movable part, and the width of the groove is adapted to the connecting part.

4. The expansion device according to claim 2, characterized in that: The inner side surface of the baffle is provided with a sawtooth groove.

5. The expansion device according to claim 1, characterized in that: The outer side surface of the baffle connected to each arc-shaped unit piece is provided with an arc-shaped guide groove, and the arc-shaped guide groove of each baffle forms a circle of accommodating space. An elastic band is arranged in the accommodating space so that the elastic band is sleeved in the arc-shaped guide groove on the outer side of the baffle of the top expansion tube body.

6. The expansion device according to claim 1, characterized in that: The outer side surface of the arc-shaped unit piece is provided with a sawtooth groove.

7. The expansion device according to claim 1, characterized in that: The size of the baffle plate is adapted to the size of the upper surface or lower surface of the arc-shaped unit piece connected thereto, the upper end and / or the lower end of the arc-shaped unit piece is provided with a threaded hole, and the baffle plate is provided with a through hole corresponding to the position of the threaded hole.

8. The expansion device according to claim 1, characterized in that: The position of the baffle corresponding to the movable groove is correspondingly provided with a limiting groove, so that the upper end and / or the lower end of the movable clamping block can be abutted in the limiting groove.

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