Expansion shaft and winding and unwinding device
By designing a tight axis that includes core shafts, swelling sleeves and tight parts, and by replacing different sizes of swelling tight claws, the expansion and tight shaft in the existing technology can only be applicable to the paper core of the roll diameter The problem realizes the function of different sizes of paper cores, reducing the manufacturing cost.
Patent Information
- Application Number
- CN202323623655.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2033-12-27
AI Technical Summary
The existing tightening shafts can only be used for paper cores of one roll diameter, resulting in the need to make tightening shafts of different specifications, which increases manufacturing costs.
Design a tight axis that includes core shafts, swelling sleeves and tight parts. The back end of the core shaft is set with cone -shaped body, the swelling section is set with an opening slot, and the swelling parts can be extended in the opening slot. Or shrink back and adapt to the core shaft of different inner diameters by replacing different sizes of bloating claws.
The swelling tight axis can be suitable for paper cores of different sizes, reducing the manufacturing cost, and the reflection of different sizes can be flexibly cope with different sizes.
Smart Images
Figure CN222410568U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of laser processing technology, and more specifically, to an expansion shaft and a winding and unwinding device. Background Art
[0002] At present, in the technical fields of printing equipment and rewinding equipment in the tobacco industry, especially in the laser punching equipment for tipping paper, it is necessary to fix the paper core on the expansion shaft of the rotating mechanism, tighten and position the paper core of the tipping paper by the expansion shaft, and then reel in and out and rotate to complete various work requirements.
[0003] Taking an existing laser punching machine for pattern holes in tipping paper as an example, the laser punching machine includes a winding and unwinding device, an optical mechanism and an operating table. The optical mechanism and the winding and unwinding device are both arranged on the operating table, and the tipping paper is installed on the expansion shaft of the rewinding device. During the winding and unwinding process of the tipping paper, the optical mechanism focuses a high-energy-density laser beam to punch pattern holes on the tipping paper tape through a galvanometer scanning. However, the existing expansion shaft can only correspond to a paper core with one roll diameter. If there are paper cores with different roll diameters, expansion shafts of different specifications need to be manufactured, which increases the manufacturing cost.
[0004] Therefore, there is an urgent need for an expansion shaft and a winding and unwinding device that can be suitable for fixing paper cores of different sizes and has lower cost. Utility Model Content
[0005] In order to solve the above technical problems, the present application provides an expansion shaft and a winding and unwinding device, which can be used to fix paper cores of different sizes and have lower cost.
[0006] The technical solutions provided by this application are as follows:
[0007] A tensioning shaft, comprising:
[0008] A mandrel, wherein a cone is provided at the rear end of the mandrel;
[0009] An expansion sleeve is sleeved on the outer side of the conical body, and the expansion sleeve is provided with open grooves at intervals in the circumferential direction;
[0010] An expansion piece is sleeved on the outside of the cone, the inner side of the expansion piece is in contact with the outer surface of the cone, the outer side of the expansion piece extends into the open groove, and the cone moves along the axial direction of the expansion sleeve to drive the expansion piece to extend or retract in the open groove;
[0011] A clamping claw is arranged on the outside of the expansion sleeve and is detachably connected to the clamping piece.
[0012] Preferably, at least three opening grooves are provided, and the opening grooves, the expansion members and the expansion claws are provided in one-to-one correspondence.
[0013] Preferably, the expansion claw is detachably connected to the expansion member via a screw.
[0014] Preferably, at least two of the screws are provided on one of the clamping claws, and the screws are arranged at intervals along the length direction of the clamping claw.
[0015] Preferably, it also includes:
[0016] A groove is arranged in the middle of the clamping claw, and the groove is recessed from the outer surface of the clamping claw toward one side of the clamping member.
[0017] Preferably, the expansion sleeve comprises:
[0018] A body, wherein the opening groove is arranged on an outer surface of the body;
[0019] A gland fixedly connected to the front end of the body, wherein a threaded hole threadably connected to the mandrel is provided in the gland;
[0020] A mounting seat connected to the rear end of the body, the mounting seat is used to be connected to a rotating drive member.
[0021] Preferably, the expansion sleeve further comprises:
[0022] An end cover is sleeved on the outer side of the body and fixedly connected to the mounting seat.
[0023] Preferably, it also includes:
[0024] A fixing claw disposed at a front end of the expansion claw away from the mounting seat;
[0025] An elastic member, one end of which is connected to the fixing claw, and one end of which is away from the fixing claw and is connected to the body or the tightening claw;
[0026] A guide assembly is used to constrain the radial movement of the fixed claw.
[0027] Preferably, the guide assembly comprises:
[0028] A guide post is arranged on the fixed claw, the guide post extends along the radial direction of the expansion sleeve, and the elastic member is sleeved on the outer side of the guide post;
[0029] A guide sleeve is arranged on the outside of the main body or the expansion claw and is used in conjunction with the guide column.
[0030] A winding and unwinding device comprises the expansion shaft described in any one of the above items.
[0031] The expansion shaft provided by the utility model is firstly provided with a core shaft, an expansion sleeve and an expansion piece, wherein a conical body is provided at the rear end of the core shaft, the expansion sleeve is provided on the outside of the conical sleeve, the expansion sleeve is provided with open grooves at circumferential intervals, the expansion piece is sleeved on the outside of the conical body, and the inner side of the expansion piece is in contact with the outer surface of the conical body, the outer side of the expansion piece extends into the open groove, and the core shaft moves along the axial direction of the expansion sleeve, driving the expansion piece to extend or retract in the open groove. In order to facilitate the fixing of core shafts with different inner diameters, a expansion claw is also provided, the expansion claw is provided on the outside of the expansion sleeve, and the expansion claw and the expansion piece are specifically detachably connected, and by replacing expansion claws of different sizes, the expansion shaft can be matched with core shafts of different inner diameters. It can be seen that compared with the prior art, the expansion shaft in the embodiment of the utility model does not need to make expansion shafts of different sizes, and only needs to replace expansion claws of different sizes to be suitable for paper cores of different sizes, which is lower in cost.
[0032] The utility model also provides a reeling and unreeling device, including the above-mentioned expansion shaft, which can also be applied to paper cores of different sizes and has lower cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0034] Figure 1 A schematic diagram of the structure of the expansion shaft provided by the embodiment of the utility model;
[0035] Figure 2 for Figure 1 Sectional view at AA in the middle;
[0036] Figure 3 Another structural schematic diagram of the expansion shaft provided in an embodiment of the utility model.
[0037] Figure numerals: 1, core shaft; 2, cone; 3, expansion sleeve; 4, expansion piece; 5, expansion claw; 31, main body; 32, pressure cover; 33, mounting seat; 34, end cover; 35, mounting screw; 6, fixing claw; 7, elastic piece; 8, guide assembly; 91, bearing; 92, bearing seat; 11, rubber layer. DETAILED DESCRIPTION
[0038] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0039] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0040] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.
[0042] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.
[0043] The embodiments of the present invention are written in a progressive manner.
[0044] like Figures 1 to 3As shown, an embodiment of the utility model provides a tightening shaft, comprising: a core shaft 1, a conical body 2 is arranged at the rear end of the core shaft 1; an expansion sleeve 3 is sleeved on the outside of the conical body 2, and the expansion sleeve 3 is provided with open grooves at circumferential intervals; a tightening piece 4 is sleeved on the outside of the conical body 2, the inner side of the tightening piece 4 is in contact with the outer surface of the conical body 2, and the outer side of the tightening piece 4 extends into the open groove, and the conical body 2 moves along the axial direction of the expansion sleeve 3, driving the tightening piece 4 to extend or retract in the open groove; and an tightening claw 5 is arranged on the outside of the expansion sleeve 3 and is detachably connected to the tightening piece 4.
[0045] The expansion shaft in the prior art can only be used to install paper cores with small diameters, and one expansion shaft can only correspond to one specification of paper cores. If there are paper cores with different diameters, expansion shafts of different specifications need to be manufactured, which increases the manufacturing cost.
[0046] The expansion shaft provided by the utility model is firstly provided with a core shaft 1, an expansion sleeve 3 and an expansion piece 4, wherein a conical body 2 is provided at the rear end of the core shaft 1, the expansion sleeve 3 is sleeved on the outside of the conical body, the expansion sleeve 3 is provided with open grooves at circumferential intervals, the expansion piece 4 is sleeved on the outside of the conical body 2, and the inner side of the expansion piece 4 is in contact with the outer surface of the conical body 2, the outer side of the expansion piece 4 extends into the open groove, the core shaft 1 moves along the axial direction of the expansion sleeve 3, driving the expansion piece 4 to extend or retract in the open groove. In order to facilitate the fixing of the core shaft 1 with different inner diameters, a expansion claw 5 is also provided, the expansion claw 5 is provided on the outside of the expansion sleeve 3, and the expansion claw 5 and the expansion piece 4 are specifically detachably connected, and by replacing the expansion claws 5 of different sizes, the expansion shaft can be matched with the core shaft 1 with different inner diameters. It can be seen that compared with the prior art, the expansion shaft in the embodiment of the utility model does not need to be manufactured in different sizes. It only needs to replace the expansion claws 5 of different sizes to be applicable to paper cores of different sizes, which is lower in cost.
[0047] In the above structure, as one embodiment, the outer diameter of the cone 2 gradually increases toward the front end of the core shaft 1, the inner wall of the expansion piece 4 is adapted to the shape of the cone 2, and the inner diameter of the expansion piece 4 gradually increases.
[0048] In the above structure, as one of the embodiments, at least three opening grooves are provided in the embodiment of the utility model, and the opening grooves are arranged at intervals around the circumference of the expansion sleeve 3, and the opening grooves, the expansion piece 4 and the expansion claws 5 are arranged one by one. When the cone 2 moves toward the rear end of the core shaft 1, it pushes the expansion piece 4 to extend outward, so that the expansion claws 5 contact the inner wall of the paper core and fix the paper core on the expansion claws 5. By replacing the expansion claws 5 of different sizes, the fixation of paper cores of different sizes can be achieved.
[0049] In the above structure, as one specific implementation, the number of the opening slots in the embodiment of the utility model is 4 to 8, and the number of the opening slots in this embodiment is 6.
[0050] In the above structure, as one implementation mode, the expansion claw 5 and the expansion member 4 in the embodiment of the utility model are detachably connected by screws.
[0051] More specifically, a first threaded mounting hole is provided on the expansion piece 4 in the embodiment of the utility model, and a second threaded mounting hole and a countersunk hole used in conjunction with the first threaded mounting hole are provided on the expansion claw 5. The screw is installed in the countersunk hole, and the expansion claw 5 is fixed to the expansion piece 4 through the first threaded mounting hole and the second threaded mounting hole.
[0052] In the above structure, as one implementation mode, at least two screws are arranged on one expansion claw 5 in the embodiment of the utility model, and the screws are arranged at intervals along the length direction of the expansion claw 5 .
[0053] In the above structure, as one of the implementation modes, the expansion shaft in the embodiment of the utility model further includes a groove, wherein the groove is provided on the expansion claw 5, and the groove is recessed from the outer surface of the expansion claw 5 toward the expansion member 4. Due to the provision of the groove, the weight of the expansion claw 5 is lighter and the material cost is less.
[0054] In the above structure, the outer side of the front end of the expansion claw 5 in the embodiment of the utility model is provided with a chamfer, which is more convenient for installing the paper core.
[0055] In the above structure, as one of the embodiments, the expansion sleeve 3 in the embodiment of the utility model includes a body 31, a pressure cover 32 and a mounting seat 33, wherein an opening groove is arranged on the outer surface of the body 31, the front end of the body 31 is fixedly connected with the pressure cover 32, a threaded hole is arranged in the pressure cover 32, the mandrel 1 and the threaded hole are fixedly connected by threads, when the mandrel 1 rotates, the mandrel 1 moves along the axial direction, thereby pushing the expansion member 4 and the expansion claw 5 to extend or retract from the opening groove. The mounting seat 33 is fixedly arranged at the rear end of the body 31, and the mounting seat 33 is used to be connected with the rotating drive member in the winding and unwinding device. When the paper core is fixed on the outside of the expansion member 4, the rotating drive member drives the expansion shaft and the paper core to rotate, thereby realizing the winding and unwinding of the paper core.
[0056] In the above structure, as one embodiment, the core shaft 1 and the cone 2 in the embodiment of the utility model are rotatably connected via a bearing assembly. The bearing seat 92 of the bearing assembly is fixedly connected to the cone 2, and the bearing 91 in the bearing assembly is sleeved on the outer side of the core shaft 1.
[0057] Furthermore, the bearing 91 in the embodiment of the utility model is specifically a self-aligning ball bearing.
[0058] Furthermore, as one implementation mode, the rotation of the core shaft 1 in the embodiment of the utility model can be driven by a driving member to drive the core shaft 1 axially to rotate, or the core shaft 1 can be driven to rotate manually.
[0059] As one of the implementation modes, when the core shaft 1 is locked by manual rotation, the outer side of the core shaft 1 in the embodiment of the utility model is covered with a circle of rubber layer 11. On the one hand, the rubber layer 11 protects the operator to prevent the operator from being injured when rotating the core shaft 1. On the other hand, it can increase the friction force between the operator's hand and the core shaft 1, making it more convenient to use.
[0060] In the above structure, in order to facilitate the installation of the mounting seat 33, as one implementation mode, the mounting seat 33 in the embodiment of the utility model is provided with mounting screws 35.
[0061] In the above structure, as one of the implementation modes, the expansion sleeve 3 in the embodiment of the utility model further includes an end cover 34, wherein the end cover 34 is sleeved on the outside of the body 31, and the end cover 34 is fixedly connected to the mounting seat 33. When the paper core is mounted on the outside of the expansion shaft, the end cover 34 positions the end surface of the paper core to prevent the paper core from axial movement during rotation.
[0062] Please Figure 3 As shown, as a more preferred embodiment, the expansion shaft in the embodiment of the utility model further includes a fixed claw 6, an elastic member 7 and a guide assembly 8, wherein the fixed claw 6 is arranged outside the front end of the expansion claw 5 away from the mounting seat 33, one end of the elastic member 7 is connected to the fixed claw 6, and the end of the elastic member 7 away from the fixed claw 6 is connected to the body 31 or the expansion claw 5, and the guide assembly 8 is used to limit and constrain the fixed claw 6 to move radially along the expansion sleeve 3. When the paper core is installed, the fixed claw 6 moves toward the expansion sleeve 3, and the elastic member 7 is compressed and deformed. After the paper core is installed, the elastic member 7 is elastically reset and deformed, and the fixed claw 6 is reset. The fixed claw 6 fixes the end surface of the paper core, and the paper core is more stable during the rotation process.
[0063] Furthermore, as one implementation mode, both ends of the fixing claw 6 in the embodiment of the utility model are chamfered, which is more convenient for installing the paper core.
[0064] In the above structure, as one of the implementation modes, the guide assembly 8 in the embodiment of the utility model includes a guide column and a guide sleeve, wherein the guide column is fixedly connected to the expansion claw 5, the guide column extends radially along the expansion sleeve 3, the elastic member 7 is sleeved on the outside of the guide column, the guide sleeve is arranged on the main body 31 or the expansion claw 5, and the guide column and the elastic member 7 are inserted into the guide sleeve, the guide column cooperates with the guide sleeve to limit and constrain the direction of movement of the fixed claw 6.
[0065] Furthermore, in order to better fix the end surface of the paper core and achieve a better fixing effect of the paper core, as one embodiment, the elastic member 7 in the embodiment of the utility model is connected to the body 31 at one end away from the fixing claw 6. Furthermore, a guide sleeve is arranged on the outside of the body 31 to limit the direction in which the elastic member and the guide column move.
[0066] More specifically, as one implementation mode, the elastic member 7 in the embodiment of the utility model is specifically a spring.
[0067] The utility model also provides a reeling and unreeling device, including the above-mentioned expansion shaft, which can also be applied to paper cores of different sizes and has lower cost.
[0068] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A tensioning shaft, characterized in that: include: A mandrel (1), wherein a cone (2) is provided at the rear end of the mandrel (1); An expansion sleeve (3) is sleeved on the outer side of the conical body (2), and the expansion sleeve (3) is provided with open grooves at intervals in the circumferential direction; A tightening piece (4) is sleeved on the outside of the conical body (2), the inner side of the tightening piece (4) is in contact with the outer surface of the conical body (2), the outer side of the tightening piece (4) extends into the open groove, and the conical body (2) moves along the axial direction of the expansion sleeve (3), driving the tightening piece (4) to extend or retract in the open groove; A clamping claw (5) is arranged on the outside of the expansion sleeve (3) and is detachably connected to the clamping piece (4).
2. The expansion shaft according to claim 1, characterized in that: At least three opening slots are provided, and the opening slots, the expansion members (4) and the expansion claws (5) are provided in a one-to-one correspondence.
3. The expansion shaft according to claim 2, characterized in that: The expansion claw (5) and the expansion member (4) are detachably connected via screws.
4. The expansion shaft according to claim 3, characterized in that: At least two of the screws are arranged on one of the expansion claws (5), and the screws are arranged at intervals along the length direction of the expansion claw.
5. The expansion shaft according to claim 4, characterized in that: Also includes: A groove is arranged in the middle of the clamping claw, and the groove is recessed from the outer surface of the clamping claw toward one side of the clamping member.
6. The expansion shaft according to any one of claims 1 to 5, characterized in that The expansion sleeve (3) comprises: A body (31), wherein the opening groove is arranged on the outer surface of the body (31); A gland (32) fixedly connected to the front end of the body (31), wherein a threaded hole for threaded connection with the core shaft is provided in the gland (32); A mounting seat (33) connected to the rear end of the body (31), wherein the mounting seat (33) is used to be connected to a rotating drive member.
7. The expansion shaft according to claim 6, characterized in that: The expansion sleeve (3) further comprises: An end cover (34) is sleeved on the outside of the body (31) and fixedly connected to the mounting seat (33).
8. The expansion shaft according to claim 6, characterized in that: Also includes: A fixing claw (6) disposed at a front end of the expansion claw (5) away from the mounting seat (33); An elastic member (7), one end of the elastic member (7) being connected to the fixing claw (6), and one end of the elastic member (7) being away from the fixing claw being connected to the body (31) or the tightening claw (5); A guide assembly (8) for restricting the radial movement of the fixed claw (6).
9. The expansion shaft according to claim 8, characterized in that: The guide assembly (8) comprises: A guide column is arranged on the fixed claw, the guide column extends in the radial direction of the expansion sleeve, and the elastic member (7) is sleeved on the outer side of the guide column; A guide sleeve is arranged on the outside of the body (31) or the expansion claw (5) and is used in conjunction with the guide column.
10. A reeling and unreeling device, characterized in that: The invention comprises the expansion shaft according to any one of claims 1 to 9.