CN220431738U

CN220431738U - Tensioning sleeve and winding device

Info

Publication number: CN220431738U
Application number: CN202321660780.3U
Authority: CN
Inventors: 徐舟; 王桂锋
Original assignee: Novel Huangshan Packaging Co Ltd
Current assignee: Novel Huangshan Packaging Co Ltd
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2024-02-02
Anticipated expiration: 2033-06-28

Abstract

The utility model relates to the technical field of film winding, in particular to a tensioning sleeve and a winding device, which comprise a sleeve capable of being inserted into an axial hole of a film winding shaft, wherein the sleeve is provided with guide holes, clamping blocks are slidably arranged in the guide holes, and conical columns capable of axially moving along the sleeve to push the top ends of the clamping blocks to move outwards into the guide holes and abut against the inner wall of the axial hole of the film winding shaft are arranged in the sleeve; the outer side of the sleeve is coaxially sleeved with an elastic clamping band which can drive the top ends of the clamping blocks to move into the guide holes; the utility model can stably clamp and fix the film winding shaft and avoid the damage of the film winding shaft.

Description

Tensioning sleeve and winding device

Technical Field

The utility model relates to the technical field of film winding, in particular to a tensioning sleeve and a winding device.

Background

The film rolling device winds the packaging film on the rolling tube to form the rolled packaging film so as to facilitate loading, unloading and transportation. The coiled pipe in the prior art is usually clamped between two clamping seats, and then the coiled pipe is driven to rotate by the driving piece, so that the wrapping film is wound. The film rolling mode can improve the film rolling efficiency, so that the film rolling mode is widely applied.

The patent CN115535681A discloses a PVC film coiling machine, which comprises a mounting bracket, a clamping driving mechanism, a film coiling shaft and a transfer mechanism, wherein the clamping driving mechanism is arranged on the mounting bracket and used for clamping and fixing the film coiling shaft and driving the film coiling shaft to rotate so as to carry out PVC film coiling, and the transfer mechanism is positioned below the clamping driving mechanism and used for supporting and transferring the film coiling shaft. When the film winding shaft is clamped and fixed, conical holes are formed at two ends of the film winding shaft, and then conical columns matched with the conical holes are inserted into the conical holes, so that the film winding shaft is clamped and fixed. The above prior art also presents problems during use. In the actual production process, the film winding shaft is usually a hollow cylindrical shaft, and the conical holes at the two ends of the film winding shaft are formed on the basis of performing secondary reaming on the hollow cylindrical shaft. The mode of reaming processing can make the pipe wall at film winding shaft both ends thin, leads to film winding shaft's intensity to reduce to lead to pressing from both sides the fastening timing, the pipe wall of bell mouth department is burst under the effect of awl post, leads to film winding shaft to rock, and film winding process is interrupted, has reduced work efficiency.

Disclosure of Invention

In order to avoid and overcome the technical problems in the prior art, the utility model provides a tensioning sleeve and a winding device. The utility model can stably clamp and fix the film winding shaft and avoid the damage of the film winding shaft.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the tensioning sleeve comprises a sleeve pipe which can be inserted into an axial hole of a film rolling shaft, wherein guide holes are formed in the sleeve pipe, the hole shafts are radially arranged, clamping blocks are slidably mounted in the guide holes, the bottoms of the clamping blocks form driving ends which are in contact with tapered columns capable of axially moving along the sleeve pipe, the top ends of the clamping blocks are pushed to move out of the guide holes and are abutted against the inner wall of the axial hole of the film rolling shaft, and the top ends of the clamping blocks form abutting ends which are abutted against the inner wall of the axial hole.

As still further aspects of the utility model: each guide hole is sequentially and uniformly distributed on the sleeve along the circumferential direction of the sleeve, the axial direction of the guide hole extends along the radial direction of the sleeve, and the guide hole is a two-section stepped hole with the aperture gradually reduced from outside to inside; the fixture block is of a two-section stepped block structure matched with the guide hole, and the radial length of the fixture block along the sleeve is greater than the thickness of the sleeve.

As still further aspects of the utility model: the conical column comprises a driving rod coaxially arranged with the sleeve, the front end of the driving rod is coaxially fixedly connected with a truncated cone-shaped driving head which drives the clamping block to move, and the outer surface of the driving head is in sliding fit with the bottom of the clamping block.

As still further aspects of the utility model: positioning grooves are formed in the inner wall of the sleeve shaft center hole, are uniformly distributed along the circumferential direction of the sleeve, and are parallel to the axial direction of the sleeve in the groove length direction; the rod body of the driving rod is fixedly connected with a positioning block which can be inserted into the positioning hole.

As still further aspects of the utility model: the outer diameter of the sleeve is the same as the aperture of the axle center hole, and the tail end of the sleeve is coaxially and fixedly connected with a limiting ring which can be abutted against the end part of the film rolling shaft to limit the depth of the sleeve inserted into the film rolling shaft.

As still further aspects of the utility model: the diameter of the driving rod is the same as the aperture of the axle center hole, and a thrust ring which can be abutted against the tail end of the sleeve to limit the depth of the driving rod inserted into the sleeve is coaxially fixedly connected on the driving rod.

As still further aspects of the utility model: the diameter of the bottom circle of the driving head is the same as that of the driving rod.

As still further aspects of the utility model: the outer side of the sleeve is coaxially sleeved with an elastic clamping band which can drive the top ends of the clamping blocks to move into the guide holes; the sleeve is characterized in that a first arc-shaped groove is formed in the outer wall surface of the sleeve, a second arc-shaped groove is formed in the end face of the abutting end of the clamping block, the first arc-shaped groove and the second arc-shaped groove are matched and butted with each other to form an annular groove coaxially arranged with the sleeve, and the elastic tightening hoop sleeve is embedded in the annular groove.

As still further aspects of the utility model: the elastic tightening ring is a closed-loop spring or a closed-loop elastic belt, and the thickness of the closed-loop spring or the closed-loop elastic belt is smaller than the depth of the annular groove.

The winding device is provided with the tensioning sleeve and comprises two groups of driving components for driving the film winding shaft to rotate, wherein the two groups of driving components are symmetrically arranged at two sides of the film winding shaft; the driving assembly comprises a T-shaped groove arranged on the workbench, and the length direction of the T-shaped groove is parallel to the axial direction of the film winding shaft; a T-shaped block is arranged in the T-shaped groove in a sliding manner, a rotating motor is fixedly connected to the T-shaped block, and the driving rod is coaxially fixedly connected to an output shaft of the rotating motor; a telescopic motor is arranged on the workbench, and the telescopic direction of the telescopic motor is parallel to the axial direction of the film winding shaft; the front end of the telescopic shaft of the telescopic motor is fixedly connected with the T-shaped block.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the sleeve can be fixed on the axle center hole of the film winding shaft through the outwards-moving clamping block, and then the sleeve is supported on the inner wall of the axle center hole from inside to outside, so that the film winding shaft is fixed. Under the effect of the conical column, a driving force can be provided for the outward movement of the clamping block, so that the clamping block generates a radial displacement along the film winding shaft, the axial movement of the conical column is converted into the radial movement of the clamping block, the movement form is changed, and the conversion of the movement state is realized. The setting of elasticity lock ring can provide an effort for the reduction of fixture block, and then when extracting the toper post, makes the fixture block reset fast to extract the sleeve pipe.

2. The elastic clamping hoop is matched with the annular groove, so that the elastic clamping hoop is nested in the annular groove, and friction with the wall of the axle center hole is avoided in the process that the sleeve stretches into the axle center hole. In addition, through the encircling type tightening effect of the elastic tightening ring, the quick replacement of the clamping block is realized.

3. The limiting ring arranged on the sleeve can control the depth of the sleeve inserted into the axial center hole, so that the sleeve is prevented from being inserted into the axial center hole, the sleeve is reasonably deep, convenience in the inserting and extracting process of the sleeve can be improved, the mounting time of the film winding shaft is shortened, and the working efficiency is improved.

4. The T-shaped block and the T-shaped groove are in sliding fit, so that the sleeve can be inserted into the axle center hole along the axial direction of the film winding shaft, and the film winding shaft is further accurately clamped between the two sleeves.

Drawings

FIG. 1 is a schematic view of the assembled structure of the sleeve and locking member of the present utility model.

Fig. 2 is a schematic view of the split structure of the sleeve in the present utility model.

Fig. 3 is a schematic view showing the structure of the lock member according to the present utility model.

Fig. 4 is a schematic structural view of a locking member according to the present utility model.

Fig. 5 is a schematic structural diagram of a winding device in the present utility model.

In the figure:

10. a sleeve; 11. a guide hole; 12. a limiting ring; 13. a positioning groove; 14. a first arc-shaped groove; 20. a locking member; 21. a clamping block; 211. a second arc-shaped groove; 22. a driving rod; 221. a drive head; 222. a positioning block; 23. an elastic tightening ring; 30. a drive assembly; 31. a work table; 32. a T-shaped groove; 33. a T-shaped block; 34. a rotating electric machine; 35. a telescopic motor.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 5, in an embodiment of the present utility model, a tensioning sleeve and a winding device include a sleeve 10 that can be inserted into an axial hole of a film winding shaft, where the sleeve 10 has a hollow cylindrical structure. The front end of the sleeve can be inserted into the axle center hole, and the diameter of the sleeve 10 is the same as the inner diameter of the axle center hole, so that the shaking caused by a larger gap between the sleeve 10 and the axle center hole can be avoided. A limiting ring 12 is coaxially and fixedly connected to the tail of the sleeve 10, so that the depth of the sleeve 10 inserted into the axle center hole can be controlled. The outer tube surface of the sleeve 10 is provided with guide holes 11, and the guide holes 11 are sequentially and uniformly distributed on the sleeve 10 along the circumferential direction of the sleeve 10, and conventionally, three guide holes 11 are arranged. The axial direction of the guide hole 11 extends along the radial direction of the sleeve 10, and the guide hole 11 is a two-stage stepped hole with the aperture gradually reduced from outside to inside.

The locking member 20 is arranged at the guide hole 11, the locking member 20 comprises a clamping block 21 which is slidably arranged in the guide hole 11, the clamping block 21 is of a two-section stepped block structure matched with the guide hole 11, and the length of the clamping block 21 along the radial direction of the sleeve 10 is larger than the thickness of the sleeve 10. Thus, the tightening action is performed by the driving head 221.

The outer wall surface of the sleeve 10 is provided with a first arc-shaped groove 14, the end surface of the abutting end of the clamping block 21 is provided with a second arc-shaped groove 211, the first arc-shaped groove 14 and the second arc-shaped groove 211 are matched and butted with each other to form an annular groove coaxially arranged with the sleeve 10, and the elastic clamping hoop 23 is sleeved in the annular groove. The elastic tightening ring 23 is a closed loop spring or a closed loop elastic belt, and the thickness of the closed loop spring or the closed loop elastic belt is smaller than the depth of the annular groove.

A conical column which can move along the axial direction of the sleeve 10 to push the top ends of the clamping blocks 21 to move outwards to form a guide hole 11 and abut against the inner wall of the axial center hole of the film winding shaft is arranged in the sleeve 10. The conical column comprises a driving rod 22 coaxially arranged with the sleeve 10, a truncated cone-shaped driving head 221 coaxially fixedly connected with the front end of the driving rod 22 and driving the clamping block 21 to move is fixedly connected with the front end of the driving rod, and the outer surface of the driving head 221 and the bottom of the clamping block 21 are in sliding fit with each other. In order to control the depth of insertion of the driving rod 22 into the sleeve 10, a thrust ring is coaxially fixed to the driving rod 22 and can be abutted against the tail end of the sleeve 10 to limit the depth of insertion of the driving rod 22 into the sleeve 10.

In order to keep the driving rod 22 inserted into the sleeve 10 and the sleeve 10 relatively fixed, positioning grooves 13 are formed on the inner wall of the axial hole of the sleeve 10, the positioning grooves 13 are uniformly distributed along the circumferential direction of the sleeve 10, the groove length direction of the positioning grooves 13 is parallel to the axial direction of the sleeve 10, and a positioning block 222 capable of being inserted into the positioning hole is fixedly connected to the rod body of the driving rod 22.

The winding device comprises two groups of driving assemblies 30 for driving the film winding shaft to rotate, and the two groups of driving assemblies 30 are symmetrically arranged at two sides of the film winding shaft; the driving assembly 30 comprises a T-shaped groove 32 arranged on the workbench 31, and the length direction of the T-shaped groove 32 and the axial direction of the film winding shaft are parallel to each other; a T-shaped block 33 is arranged in the T-shaped groove 32 in a sliding manner, a rotating motor 34 is fixedly connected to the T-shaped block 33, and the driving rod 22 is coaxially fixedly connected to an output shaft of the rotating motor 34; a telescopic motor 35 is arranged on the workbench 31, and the telescopic direction of the telescopic motor 35 is parallel to the axial direction of the film winding shaft; the front end of the telescopic shaft of the telescopic motor 35 and the T-shaped block 33 are fixedly connected with each other.

In practical use, a film winding shaft made of plastic or stainless steel is firstly taken, and two ends of the film winding shaft are provided with sleeves 10. Then the film winding shaft is placed between the two symmetrically arranged driving assemblies 30, the two telescopic motors 35 are synchronously started, the driving rod 22 is pushed to the sleeve 10, the driving head 221 is inserted into the sleeve 10, and the positioning block 222 is inserted into the positioning groove 13. According to the preset pushing distance, the thrust ring is just abutted against the tail of the sleeve 10, and the clamping block 21 is pushed out to be abutted against the hole wall of the axial center hole of the film winding shaft. Finally, the rotating motor 34 is started, and the winding action can be completed.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The tensioning sleeve is characterized by comprising a sleeve (10) which can be inserted into an axial hole of a film winding shaft, guide holes (11) which are radially arranged in the axial hole are formed in the sleeve (10), clamping blocks (21) are slidably arranged in the guide holes (11), the bottoms of the clamping blocks (21) form driving ends which are in contact with tapered columns capable of axially moving along the sleeve (10), the top ends of the clamping blocks (21) are pushed to move out of the guide holes (11) and are abutted against the inner wall of the axial hole of the film winding shaft, and the top ends of the clamping blocks (21) form abutting ends which are abutted against the inner wall of the axial hole.

2. The tensioning sleeve according to claim 1, wherein the guide holes (11) are sequentially and uniformly distributed on the sleeve (10) along the circumferential direction of the sleeve (10), the axial direction of the guide holes (11) extends along the radial direction of the sleeve (10), and the guide holes (11) are two-section stepped holes with gradually reduced pore diameters from outside to inside; the clamping block (21) is of a two-section stepped block structure matched with the guide hole (11), and the length of the clamping block (21) along the radial direction of the sleeve (10) is larger than the thickness of the sleeve (10).

3. A tensioning sleeve according to claim 2, characterized in that the conical column comprises a driving rod (22) coaxially arranged with the sleeve (10), a truncated cone-shaped driving head (221) coaxially fixedly connected with the front end of the driving rod (22) and moving with the driving clamping block (21), and the outer surface of the driving head (221) and the bottom of the clamping block (21) are in sliding fit with each other.

4. A tensioning sleeve according to claim 3, characterized in that positioning grooves (13) are formed in the inner wall of the shaft center hole of the sleeve (10), the positioning grooves (13) are uniformly distributed along the circumferential direction of the sleeve (10), and the groove length direction of the positioning grooves (13) is parallel to the axial direction of the sleeve (10); the rod body of the driving rod (22) is fixedly connected with a positioning block (222) which can be inserted into the positioning hole.

5. The tensioning sleeve according to claim 4, wherein the outer diameter of the sleeve (10) is the same as the bore diameter of the shaft center hole, and a limiting ring (12) which can be abutted against the end part of the film rolling shaft to limit the depth of the sleeve (10) inserted into the film rolling shaft is coaxially fixedly connected with the tail end of the sleeve (10).

6. A tensioning sleeve according to claim 5, characterized in that the diameter of the driving rod (22) is the same as the diameter of the axial hole, and a thrust ring which can be abutted against the tail end of the sleeve (10) to limit the depth of the driving rod (22) inserted into the sleeve (10) is coaxially fixedly connected to the driving rod (22).

7. A tensioning sleeve according to claim 6, characterized in that the bottom circle diameter of the drive head (221) is the same as the diameter of the drive rod (22).

8. A tensioning sleeve according to any one of claims 1-7, characterized in that the outer side of the sleeve (10) is coaxially sleeved with an elastic tightening ring (23) which can drive the top ends of the respective clamping blocks (21) to move into the guide holes (11); the outer wall surface of the sleeve (10) is provided with a first arc-shaped groove (14), the end surface of the abutting end of the clamping block (21) is provided with a second arc-shaped groove (211), the first arc-shaped groove (14) and the second arc-shaped groove (211) are matched and butted with each other to form an annular groove which is coaxially arranged with the sleeve (10), and the elastic clamping ring (23) is embedded in the annular groove in a sleeved mode.

9. A tensioning sleeve according to claim 8, characterized in that the elastic tightening band (23) is a closed loop spring or a closed loop elastic band, and the thickness of the closed loop spring or the closed loop elastic band is smaller than the depth of the annular groove.

10. A winding device applying a tensioning sleeve according to claim 8, characterized by comprising two sets of driving assemblies (30) driving the film winding shaft to rotate, the two sets of driving assemblies (30) being symmetrically arranged on both sides of the film winding shaft; the driving assembly (30) comprises a T-shaped groove (32) arranged on the workbench (31), and the length direction of the T-shaped groove (32) and the axial direction of the film winding shaft are parallel to each other; a T-shaped block (33) is arranged in the T-shaped groove (32) in a sliding manner, a rotating motor (34) is fixedly connected to the T-shaped block (33), and the driving rod (22) is coaxially fixedly connected to an output shaft of the rotating motor (34); a telescopic motor (35) is arranged on the workbench (31), and the telescopic direction of the telescopic motor (35) is parallel to the axial direction of the film winding shaft; the front end of the telescopic shaft of the telescopic motor (35) is fixedly connected with the T-shaped block (33).