Rapid cylinder core tensioning device and winding and unwinding mechanism

Abstract

The utility model discloses a quick expansion cylinder core device and winding and unwinding mechanism, wherein the quick expansion cylinder core device comprises a main shaft, a driving part and a supporting shaft sleeve for expanding a cylinder core, the supporting shaft sleeve comprises at least three supporting plates, the driving part is detachably arranged at one end of the main shaft and can reciprocate along the length direction of the main shaft, and the driving part is detachably arranged at the other end of the main shaft. A first connecting shaft sleeve is connected to the driving part, a second connecting shaft sleeve is fixedly connected to the side, away from the first connecting shaft sleeve, of the main shaft, a plurality of connecting rods are hinged to the first connecting shaft sleeve and the second connecting shaft sleeve correspondingly, and the connecting rods are connected to the supporting plates correspondingly; the connecting rod can drive the supporting plate to move in the direction close to or away from the main shaft along with the reciprocating motion of the driving piece. The tensioning device has the advantages that the structure is simple, operation is convenient and fast, and the reliability and stability of the tensioning cylinder core in the winding and unwinding work process can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of film production, in particular to a fast tensioning tube core device and a winding and unwinding mechanism. Background Art

[0002] In the production of thin products such as rolls of paper and films, winding and unwinding equipment is indispensable. In order to ensure that the thin products are stably wound on the core, the winding and unwinding equipment is often equipped with devices for tightening and supporting the core. The existing core tightening and supporting devices can basically meet the needs of smooth winding, but there are generally problems of cumbersome operation and high cost.

[0003] In view of this, the purpose of the utility model is to provide a new technical solution to solve the existing technical problems. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a rapid core tensioning device and a winding and unwinding mechanism, which solves the problems of complicated core tensioning operation and high cost, while effectively ensuring the stability of the core during winding and unwinding.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A quick tensioning core device comprises a main shaft, a driving member and a supporting sleeve for tensioning the core, the supporting sleeve comprising at least three supporting plates, the driving member being detachably arranged at one end of the main shaft and being reciprocating along the length direction of the main shaft, the driving member being connected to a first connecting sleeve, a side of the main shaft away from the first connecting sleeve being fixedly connected to a second connecting sleeve, a plurality of connecting rods being hinged on the first connecting sleeve and the second connecting sleeve, respectively, a plurality of the connecting rods being connected to each of the supporting plates, the connecting rods being able to drive the supporting plates to move towards or away from the main shaft as the driving member reciprocates.

[0007] In the above structure, the supporting sleeve includes four supporting plates, and the four supporting plates are arranged in an array around the main shaft.

[0008] In the above structure, the outer peripheral side of the support plate is in an arc-shaped structure, and the four support plates form a supporting shaft sleeve of a cylindrical structure.

[0009] In the above structure, a third connecting sleeve is fixedly connected to the main shaft, the third connecting sleeve is located between the first connecting sleeve and the second connecting sleeve, and the third connecting sleeve is connected to each of the support plates via a connecting rod.

[0010] In the above structure, the driving member is an active rotating member, and the active rotating member is threadedly connected to the main shaft.

[0011] In the above structure, a detachable limiting pin is connected to the end of the main shaft close to the active rotating member.

[0012] In the above structure, a mounting groove is provided on the circumference of the active rotating member, and the first connecting sleeve is rotatably sleeved in the mounting groove.

[0013] The above structure further includes a driving pulley disposed at the end of the main shaft.

[0014] The utility model also provides a reeling and unreeling mechanism, comprising a fast tensioning core device with the above structure.

[0015] The beneficial effects of the utility model are as follows: an active rotating part, a first connecting sleeve and a support plate connected to the main shaft through a connecting rod are provided, and moving the active rotating part along the main shaft can drive each support plate to move in a direction close to or away from the main shaft, thereby realizing the divergence and contraction of each support plate, and then realizing the tightening or separation of the core. The structure is simple, the operation is convenient, and it is beneficial to ensure the reliability and stability of the tightening core during the winding and unwinding process, thereby effectively improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the axial side of the utility model;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0020] Figure numerals: 1, main shaft; 11, pin; 2, active rotating member; 3, support plate; 31, connecting part; 4, first connecting sleeve; 5, second connecting sleeve; 6, third connecting sleeve; 7, connecting rod; 8, driving pulley. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-3 The utility model is further described.

[0022] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the utility model can be combined interchangeably without conflicting with each other.

[0023] Reference Figures 1 to 3 The utility model provides a device for quickly tightening a core, including a main shaft 1, a driving member and a supporting sleeve, wherein the supporting sleeve is used for tightening the core, and the driving member is used for driving the supporting sleeve to tighten the core. The driving member is detachably arranged on one side of the main shaft 1 near the end, and the driving member can reciprocate on the main shaft 1 along the axis of the main shaft 1. A first connecting sleeve 4 is arranged on the driving member, and the driving member drives the first connecting sleeve 4 to move when it moves on the main shaft 1. A second connecting sleeve 5 is arranged on the side of the main shaft 1 away from the driving member, and a plurality of connecting rods 7 are hinged on the first connecting sleeve 4 and the second connecting sleeve 5, respectively. The supporting sleeve is sleeved on the main shaft 1, and the inner side surface of the supporting sleeve is hinged to each connecting rod 7. Each connecting rod 7 can drive the supporting sleeve to tighten the core or detach from the core as the driving member reciprocates. Specifically, the support sleeve includes at least three support plates 3, each support plate 3 is evenly arranged on the outer peripheral side of the main shaft 1, and the support plate 3 is hinged to the first connecting sleeve 4 and the second connecting sleeve 5 at both ends through the connecting rod 7. When the driving member is moved in the direction close to the second connecting sleeve 5, each connecting rod 7 stretches the support plate 3, so that each support plate 3 diverges along the radial direction of the main shaft 1 toward the direction away from the main shaft 1, which corresponds to the process of the support sleeve tightening the tube core; when the driving member is moved in the direction away from the second connecting sleeve 5, each support plate 3 is subjected to the pulling force of the connecting rod 7 and contracts along the radial direction of the main shaft 1 toward the direction close to the main shaft 1, which corresponds to the process of the support sleeve detaching from the tube core.

[0024] Furthermore, the driving member is an active rotating member 2, which is threadedly connected to the main shaft 1. Specifically, an outer thread is provided on the outer circumference of one end of the main shaft 1 away from the second connecting sleeve 5, and an inner thread matching the outer thread is provided on the inner circumference of the active rotating member 2. Under the action of the thread cooperation, the active rotating member 2 is rotated, and the active rotating member 2 can move axially along the main shaft 1. That is, the active rotating member 2 is rotated forward, and the active rotating member 2 moves along the main shaft 1 toward the direction close to the second connecting sleeve 5; the active rotating member 2 is rotated backward, and the active rotating member 2 moves away from the second connecting sleeve 5 along the main shaft 1. The active rotating member 2 is threadedly connected to the main shaft 1, and the supporting sleeve can be controlled to tighten the core or disengage the core by rotating the active rotating member 2 forward or backward, which has a simple structure and convenient operation. It should be noted that the active rotating member 2 can also be installed on the main shaft 1 in other ways, for example, the active rotating member 2 is slidably set on the main shaft 1, and the active rotating member 2 that slides to the corresponding position is fixed by fasteners such as screws.

[0025] The active rotating member 2 is connected with a first connecting sleeve 4. Specifically, a mounting groove is provided on the circumference of the active rotating member 2, and the first connecting sleeve 4 is rotatably nested in the mounting groove. A second connecting sleeve 5 is provided on the side of the main shaft 1 away from the active rotating member 2. In this embodiment, the second connecting sleeve 5 is fixedly connected to the main shaft 1, and a set screw is provided on the second connecting sleeve 5. The second connecting sleeve 5 is connected and fixed to the main shaft 1 through the set screw. A third connecting sleeve 6 is fixedly connected to the main shaft 1, and the third connecting sleeve 6 is located between the first connecting sleeve 4 and the second connecting sleeve 5. A plurality of connecting rods 7 are correspondingly hinged on the third connecting sleeve 6, and the third connecting sleeve 6 is connected to each supporting plate 3 through the connecting rod 7. The third connecting sleeve 6 is also fixedly connected to the main shaft 1 through the set screw. The third connecting sleeve 6 is provided to further support the supporting sleeve, support the supporting sleeve at multiple points, strengthen the support strength of the supporting sleeve, and further ensure the support stability and reliability of the supporting sleeve.

[0026] Reference Figure 1 A detachable limit pin 11 is connected to one end of the main shaft 1 close to the active rotating member 2. The limit pin 11 is used to limit the moving range of the active rotating member 2, effectively reducing the possibility of the active rotating member 2 being separated from the main shaft 1 during the rotation process.

[0027] Reference Figure 1 and Figure 2, the support sleeve includes at least three support plates 3, and the outer circumference of the support plate 3 is an arc-shaped structure, and each support plate 3 forms a support sleeve with a cylindrical structure, that is, the outer circumference of each support plate 3 arranged in each array is located on the same circle. A connecting portion 31 is arranged in the middle of the inner side of the support plate 3, that is, the cross-section of the support plate 3 is approximately a "T"-shaped structure, and each connecting rod 7 is hinged to the connecting portion 31 of the support plate 3. In practical applications, the width and number of the support plates 3 can be set as needed, for example, three support plates 3, four support plates 3, etc. are set. In this embodiment, four support plates 3 are set, and the four support plates 3 are arranged in an array on the side of the main shaft 1 to form a support sleeve with a nearly circular ring structure. Four groups of connecting rods 7 are arranged on the sides of the first connecting sleeve 4, the second connecting sleeve 5 and the third connecting sleeve 6, respectively, and each group of connecting rods 7 corresponds to the support plate 3 one by one, wherein each group has two connecting rods 7, and the two connecting rods 7 of each group are symmetrically arranged on both sides of the corresponding connecting portion 31 of the support plate 3.

[0028] The four support plates 3 are symmetrically arranged so that the circumferential forces of the connecting rods 7 on the active rotating member 2 cancel each other out, and only the axial force along the main shaft 1 remains, that is, the active rotating member 2 is always subjected to the axial thrust of the connecting rods 7, and the main shaft 1 and the active rotating member 2 are connected by threads, and the axial force will not cause the main shaft 1 and the active rotating member 2 to loosen, and under the action of the thrust, the active rotating member 2 and the main shaft 1 are always in a tight fit, ensuring the stability and reliability of the tension of the core when the device as a whole rotates to rewind or unwind.

[0029] The utility model provides a fast tensioning core device, which also includes a driving pulley 8, which is arranged at the end of the main shaft 1 away from the active rotating member 2, and is used to drive the entire device to rotate to achieve the purpose of winding and unwinding operations. The driving pulley 8 is fixedly installed at the end of the main shaft 1 through a shaft retaining ring.

[0030] The utility model also provides a reeling and unreeling mechanism, comprising a fast tensioning core device of the structure as described above.

[0031] The operation process of the utility model is:

[0032] When the core needs to be installed, the active rotating member 2 is rotated forward. Since the active rotating member 2 is threadedly connected to the main shaft 1, the active rotating member 2 drives the first connecting sleeve 4 to move along the main shaft 1 toward the direction close to the second connecting sleeve 5 under the action of the thread. In this process, each connecting rod 7 pushes each support plate 3 to diverge in the direction away from the main shaft 1. The four support plates 3 completely tighten the core. At this time, the driving pulley 8 can be controlled to drive the entire device to rotate for winding or unwinding. When the winding or unwinding work is completed and the core needs to be removed, the active rotating member 2 is rotated in the opposite direction to drive the first connecting sleeve 4 to move along the main shaft 1 away from the second connecting sleeve 5. The support plate 3 receives the pulling force of the connecting rod 7 and shrinks in the direction close to the main shaft 1 until each support plate 3 is separated from the core. At this time, the core can be removed. The process of installing and removing the core is simple and efficient, and effectively ensures the stability of the core during winding and unwinding.

[0033] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A rapid tensioning core device, characterized in that: It includes a main shaft, a driving member and a supporting sleeve for a tensioning tube core, the supporting sleeve includes at least three supporting plates, the driving member is detachably arranged at one end of the main shaft and can reciprocate along the length direction of the main shaft, the driving member is connected to a first connecting sleeve, and a second connecting sleeve is fixedly connected to a side of the main shaft away from the first connecting sleeve, a plurality of connecting rods are respectively hinged on the first connecting sleeve and the second connecting sleeve, and a plurality of the connecting rods are respectively connected to each of the supporting plates, and the connecting rods can drive the supporting plates to move toward or away from the main shaft as the driving member reciprocates.

2. A rapid tensioning core device according to claim 1, characterized in that: The supporting sleeve includes four supporting plates, and the four supporting plates are arranged in an array around the main shaft.

3. A rapid tensioning core device according to claim 2, characterized in that: The outer peripheral side of the support plate is in an arc-shaped structure, and the four support plates form a supporting shaft sleeve with a cylindrical structure.

4. A rapid tensioning core device according to claim 1, characterized in that: A third connecting sleeve is fixedly connected to the main shaft, the third connecting sleeve is located between the first connecting sleeve and the second connecting sleeve, and the third connecting sleeve is connected to each of the support plates via a connecting rod.

5. A rapid tensioning core device according to claim 1, characterized in that: The driving member is an active rotating member, and the active rotating member is threadedly connected to the main shaft.

6. A rapid tensioning core device according to claim 5, characterized in that: A detachable limiting pin is connected to one end of the main shaft close to the active rotating member.

7. A rapid tensioning core device according to claim 5, characterized in that: A mounting groove is provided on the peripheral side of the active rotating member, and the first connecting shaft sleeve is rotatably sleeved in the mounting groove.

8. A rapid tensioning core device according to claim 1, characterized in that: It also includes a driving pulley arranged at the end of the main shaft.

9. A reeling and unreeling mechanism, characterized in that: A rapid tensioning core device comprising the device described in any one of claims 1 to 8.

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