A manual tensioning device for a carbon fiber winding machine

Abstract

The present invention relates to the technical field of winding shaft structure, and in particular to a manual tensioning device for a carbon fiber winding machine, comprising: a drive shaft, a tensioning assembly, a pushing assembly, a positioning sleeve, and an end cap, wherein the tensioning assembly comprises a tensioning sleeve, a tensioning seat, and a plurality of tensioning strips uniformly distributed and embedded between the tensioning sleeve and the tensioning seat along the circumferential direction; the pushing assembly comprises a coaxially arranged wedge sleeve and a push rod, and an elastic driving member for pushing the wedge sleeve to move axially; the positioning sleeve is arranged between the tensioning sleeve and the tensioning seat, and is provided with positioning grooves for embedding a plurality of tensioning strips along the circumferential direction; the end cap is fixed to the front end of the tensioning sleeve by a locking hoop. In the present invention, by setting the tensioning assembly and the pushing assembly, the tensioning action can be manually controlled, which reduces the on-site debugging time and improves the production efficiency. In addition, the purely mechanized tensioning structure ensures the reliability of the reel tensioning, avoids the loosening phenomenon during use, and effectively ensures the winding effect.

Description

Technical Field

[0001] The present invention relates to the technical field of winding shaft structures, and in particular to a manual tensioning device for a carbon fiber winding machine. Background Art

[0002] At present, the empty roll is mounted on the take-up shaft and coaxial rotation is achieved through the tensioning structure on the take-up shaft. However, since the tensioning mechanism uses many valves and control elements, a relatively complex control program is required during the roll tensioning process, resulting in a long debugging time, affecting production efficiency. In addition, insufficient power may occur during long-term use, causing the roll to loosen on the take-up shaft, seriously affecting the winding effect. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a manual tensioning device for a carbon fiber winder, which effectively solves the problems in the background technology.

[0004] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is: a manual tensioning device for a carbon fiber winder, comprising: a driving shaft;

[0005] A tensioning assembly comprising a tensioning sleeve disposed at the front end of the drive shaft, a tensioning seat disposed at the rear end of the drive shaft, and a plurality of tensioning bars uniformly distributed along the circumferential direction and embedded between the tensioning sleeve and the tensioning seat;

[0006] A push assembly is provided in the tension sleeve, comprising a coaxially arranged wedge-shaped sleeve and a push rod, and an elastic driving member for pushing the wedge-shaped sleeve to move axially, wherein the outer side surface of the wedge-shaped sleeve is provided with an inclined conical surface, and the extending end of the push rod is provided with a driving block;

[0007] A positioning sleeve is provided between the tension sleeve and the tension seat and is provided with limiting grooves for embedding the plurality of tension strips along the circumferential direction;

[0008] An end cover is fixed to the front end of the tensioning sleeve via a locking hoop;

[0009] In which, the outer side surface of the front end of the tensioning strip in contact with the reel is provided with a toothed structure, and the inner side surface facing the tensioning sleeve is provided with a first inclined surface and a second inclined surface that cooperate with the inclined conical surface, and a limiting step surface is provided between the first inclined surface and the second inclined surface. The end of the tensioning strip located on the second inclined surface extends inward to form a pushing block, and the pushing block is provided with a third inclined surface at the front end facing the wedge-shaped sleeve.

[0010] Furthermore, the outer circumferential wall of the tension sleeve is provided with through grooves for embedding the plurality of tension strips, and the outer cylindrical surface of the tension seat is provided with positioning grooves at positions corresponding to the tension strips;

[0011] The through groove is relatively extended at the position of the motion track of the toothed structure to form a guide groove.

[0012] Furthermore, a protrusion is provided at one end of the tensioning strip located in the positioning groove, and an annular groove for accommodating the protrusion is provided at the end position of the positioning groove.

[0013] Furthermore, the width of the annular groove is greater than the width of the protrusion, and an avoidance groove is provided on the step surface of the positioning groove corresponding to the position of the tensioning strip.

[0014] Furthermore, an elastic ring is sleeved on the middle cross-section of the plurality of tensioning strips, and a groove is opened on the tensioning strip, and the plurality of grooves form an arc-shaped space in the circumferential direction for installing the elastic ring.

[0015] Furthermore, the inner hole of the end cap extends inward away from one end of the tensioning strip to form a first step surface;

[0016] The wedge-shaped sleeve is provided with a stepped shaft at one end of the end cover, the diameter of the stepped shaft is smaller than the inner hole diameter of the end cover, and the end step surface of the stepped shaft and the first step surface form a telescopic space for accommodating the elastic driving member.

[0017] Furthermore, a bearing group is provided in the annular gap between the wedge-shaped sleeve and the push rod.

[0018] Furthermore, a first stepped hole and a second stepped hole are provided in the inner hole of the wedge-shaped sleeve, and the diameter of the first stepped hole is larger than the diameter of the second stepped hole;

[0019] The bearing group is arranged in the first step hole, the diameter of the driving block is smaller than the diameter of the second step hole, and a positioning sleeve is provided between the driving block and the bearing group;

[0020] In which, the push rod is axially provided with a first stepped shaft for installing the bearing group and a second stepped shaft for installing the driving block. The diameter of the first stepped shaft is larger than the diameter of the second stepped shaft. The positioning sleeve is arranged on the second stepped shaft. When the push rod drives the driving block to move, the positioning sleeve moves synchronously. When the tensioning action needs to be released, the push rod pulls the driving block to pull the wedge sleeve through the positioning sleeve.

[0021] Furthermore, a return spring is provided on a shaft section of the push rod extending out of the bearing group.

[0022] Furthermore, a positioning conical surface is provided on the outer side of the tensioning strip away from the toothed structure and in contact with the reel.

[0023] The beneficial effects of the present invention are as follows: through the setting of the tensioning component and the pushing component in the present invention, the tensioning action can be manually controlled, which reduces the on-site debugging time and improves production efficiency. In addition, the purely mechanized tensioning structure ensures the reliability of the reel tensioning, avoids loosening during use, and effectively ensures the winding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is an assembly diagram of a manual tensioning device for a carbon fiber winder according to an embodiment of the present invention;

[0026] Figure 2 This is an exploded view of a manual tensioning device for a carbon fiber winder according to an embodiment of the present invention;

[0027] Figure 3 A cross-sectional view of a manual tensioning device for a carbon fiber winder according to an embodiment of the present invention and a partial enlarged view at position I;

[0028] Figure 4 for Figure 3 A local enlarged view of point A;

[0029] Figure 5 This is a schematic structural diagram of a tension sleeve in an embodiment of the present invention;

[0030] Figure 6 Schematic diagram of the installation of the wedge-shaped sleeve and the push rod in an embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the installation of the tensioning strip on the positioning sleeve in an embodiment of the present invention;

[0032] Figure 8 Schematic diagram of the initial state of the manual tensioning device in an embodiment of the present invention;

[0033] Figure 9 Schematic diagram of the switching between the first inclined surface and the second inclined surface of the wedge-shaped sleeve in an embodiment of the present invention;

[0034] Figure 10 Schematic diagram of a manual tensioning device tightening a reel in an embodiment of the present invention.

[0035] Reference numerals: 1, drive shaft; 2, tensioning assembly; 21, tensioning sleeve; 211, through groove; 211a, guide groove; 22, tensioning seat; 221, positioning groove; 23, tensioning strip; 231, tooth-shaped structure; 232, first inclined surface; 233, second inclined surface; 234, limiting step surface; 235, pushing block; 236, third inclined surface; 237, protrusion; 238, positioning cone surface; 3, pushing assembly; 31, wedge shaped sleeve; 31a, inclined conical surface; 31b, stepped shaft; 311, first stepped hole; 312, second stepped hole; 32, push rod; 32a, driving block; 321, first stepped shaft; 322, second stepped shaft; 33, elastic driving member; 34, bearing group; 35, return spring; 36, positioning sleeve; 4, end cover; 41, first stepped surface; 5, locking hoop; 6, elastic ring; 7, positioning sleeve; 71, positioning groove. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] like Figures 1 to 10 The manual tensioning device of the carbon fiber winder shown includes: a drive shaft 1, a tensioning assembly 2, a pushing assembly 3, a positioning sleeve 7 and an end cover 4;

[0040] The tensioning assembly 2 includes a tensioning sleeve 21 disposed at the front end of the drive shaft 1, a tensioning seat 22 disposed at the rear end of the drive shaft 1, and a plurality of tensioning bars 23 uniformly distributed along the circumferential direction and embedded between the tensioning sleeve 21 and the tensioning seat 22;

[0041] The push assembly 3 is disposed within the tension sleeve 21 and includes a coaxially arranged wedge-shaped sleeve 31 and a push rod 32, and an elastic driving member 33 for pushing the wedge-shaped sleeve 31 to move axially. The outer side surface of the wedge-shaped sleeve 31 is provided with an inclined conical surface 31a, and the extending end of the push rod 32 is provided with a driving block 32a.

[0042] The positioning sleeve 7 is arranged between the tension sleeve 21 and the tension seat 22, and is provided with a limiting groove 71 along the circumferential direction for the multiple tension strips 23 to be embedded;

[0043] The end cover 4 is fixed to the front end of the tensioning sleeve 21 through the locking hoop 5;

[0044] Among them, the outer side surface of the front end of the tensioning strip 23 that contacts the reel is provided with a toothed structure 231, and the inner side surface facing the tensioning sleeve 21 is provided with a first inclined surface 232 and a second inclined surface 233 that cooperate with the inclined conical surface 31a, and a limiting step surface 234 is provided between the first inclined surface 232 and the second inclined surface 233. The end of the tensioning strip 23 is located on the second inclined surface 233 and extends inward to form a pushing block 235, and the pushing block 235 is provided with a third inclined surface 236 at the front end facing the wedge sleeve 31. It should be noted that the front end refers to the end where the reel is loaded, and the rear end refers to the end where the drive shaft 1 is connected to the driving force. In the present invention, the tensioning sleeve 21 and the tensioning seat 22 are connected to the drive shaft 1 through a flat key, and can rotate synchronously with the drive shaft 1. A limiting plate is provided inside the position corresponding to the limiting groove 71 on the positioning sleeve 7, and the limiting plate and the two side walls of the limiting groove 71 form a semi-closed cavity. In order to ensure that the tensioning strip 23 is lifted smoothly, the limiting groove 71 is open at the end close to the tensioning seat 22, which can support the middle position of the embedded tensioning strip 23.

[0045] like Figure 8-Figure 9 As shown, the preferred embodiment of the present invention is as follows: in the initial state, the inclined conical surface 31a contacts the first inclined surface 232, at which point the multiple tensioning strips 23 are embedded in the through-slot 211. When the push rod 32 is manually pushed to slide axially, the drive block 32a initially lifts the tensioning strips 23 via the third inclined surface 236, causing the tensioning sleeve 21 to switch from the first inclined surface 232 to the second inclined surface 233. At this point, the elastic drive member 33 continues to drive the wedge-shaped sleeve 31, and the inclined conical surface 31a pushes the toothed structure 231 of the multiple tensioning strips 23 until it protrudes from the tensioning sleeve 21, thereby tightening the reel outside the tensioning sleeve 21. The provision of the tensioning assembly 2 and the pushing assembly 3 in the present invention enables manual control of the tensioning action, reducing on-site commissioning time and improving production efficiency. Furthermore, the purely mechanical tensioning structure ensures the reliability of the reel tensioning, avoids loosening during use, and effectively ensures the winding effect.

[0046] In a preferred embodiment of the present invention, a through groove 211 for embedding a plurality of tensioning strips 23 is provided on the outer circumferential cylindrical wall of the tensioning sleeve 21, and a positioning groove 221 is provided on the outer cylindrical surface of the tensioning seat 22 at a position corresponding to the tensioning strip 23; the positioning groove 221 is arranged in a one-to-one correspondence with the through groove 211, and one end of the tensioning strip 23 is limited in the positioning groove 221, and the other end is embedded in the through groove 211. During the tensioning process, the end of the tensioning strip 23 located at the tensioning sleeve 21 will be lifted up, but because the width of the through groove 211 is greater than the thickness of the tensioning strip 23, there is a gap between the tensioning strip 23 and the side wall of the through groove 211. In order to avoid lateral tilting of the tensioning strip 23 in the through groove 211, a guide groove 211a is formed by relatively extending the through groove 211 at the motion trajectory position of the toothed structure 231. The setting of the guide groove 211a can guide the tensioning strip 23 while ensuring smooth passage of the tensioning strip 23, avoid twisting at the toothed structure 231, ensure the length of the toothed structure 231 protruding from the tensioning sleeve 21, and further ensure the tensioning force on the reel.

[0047] As a preferred embodiment of the above solution, a protrusion 237 is provided at one end of the tensioning strip 23 located in the positioning groove 221, and an annular groove for accommodating the protrusion 237 is provided at the end of the positioning groove 221. By placing the protrusion 237 in the annular groove, the position of the tensioning strip 23 along the axial direction is restricted, thereby ensuring that the multiple tooth-shaped structures 231 are tensioned on the same annular surface. In addition, during the setting process, in order to ensure that the end of the tensioning strip 23 located in the tooth-shaped structure 231 can be smoothly lifted, the width of the annular groove is limited. Specifically, the width of the annular groove is greater than the width of the protrusion 237. An avoidance groove is provided on the stepped surface of the positioning groove 221 at the position corresponding to the tensioning strip 23, which can reserve sufficient rotation space for the protrusion 237, so that the protrusion 237 can be used as a swing fulcrum, thereby synchronously controlling the swing angles of the multiple tensioning strips 23, so that the ejection distances of the tooth-shaped structures 231 in the circumferential direction are the same, and thus ensuring uniform tensioning force.

[0048] After the reel is wound, it needs to be detached from the tensioning shaft. The tensioning sleeve 21 is controlled to move to release the force on the tensioning strip 23, so that the tensioning strip 23 is separated from the contact with the reel. However, after the force is released, the tensioning strip 23 at the top will retract into the through groove 211, while the tensioning strip 23 at the bottom will be affected by gravity, resulting in the toothed structure 231 being unable to completely retract into the through groove 211, which will affect the installation of the reel when the reel is changed next time. Therefore, in order to ensure that the tensioning strip 23 can be smoothly reset, an elastic ring 6 is provided at the middle cross-section position of multiple tensioning strips 23, and a groove is opened on the tensioning strip 23. The multiple grooves form an arc space for installing the elastic ring 6 in the circumferential direction.

[0049] In the present invention, when the reel is installed on the tensioning shaft, the push rod 32 is manually applied with an axial thrust, and the wedge-shaped sleeve 31 pushes up the tensioning strip 23 to achieve tensioning of the reel. After the thrust of the push rod 32 is lost, the elastic driving member 33 enables the wedge-shaped sleeve 31 to still remain in the tensioned position. In order to ensure that the elastic driving member 33 has sufficient pushing force, preferably, the inner hole of the end cover 4 extends inward away from one end of the tensioning strip 23 to form a first step surface 41; the wedge sleeve 31 is located at one end of the end cover 4 and is provided with a step shaft 31b, the diameter of the step shaft 31b is smaller than the inner hole diameter of the end cover 4, and the end step surface of the step shaft 31b and the first step surface 41 form a telescopic space for accommodating the elastic driving member 33.

[0050] Specifically, the elastic driving member 33 can be a spring. When the wedge sleeve 31 contacts the first inclined surface 232, the limiting step surface 234 abuts against the end surface of the wedge sleeve 31. At this time, the limiting step surface 234 and the first step surface 41 make the spring in a compressed state. When the driving block 32a initially pushes up the pushing block 235, the reaction force of the spring causes the wedge sleeve 31 to move axially and switch to contact with the second inclined surface 233. At this time, the pushing block 235 limits the axial movement of the wedge sleeve 31, so that the tensioning strip 23 keeps the tension on the reel.

[0051] In another preferred embodiment, a bearing group 34 is provided in the annular gap between the wedge-shaped sleeve 31 and the push rod 32 to ensure that the wedge-shaped sleeve 31 can rotate synchronously during the pushing and tightening process, thereby reducing the number of shutdowns and effectively ensuring production efficiency. In order to ensure that the bearing group 34 has sufficient installation space, a first step hole 311 and a second step hole 312 are provided in the inner hole of the wedge-shaped sleeve 31. The diameter of the first step hole 311 is larger than the diameter of the second step hole 312. The bearing group 34 is arranged in the first step hole 311, and the diameter of the driving block 32a is smaller than the diameter of the second step hole 312. A positioning sleeve 36 is provided between the push rod 32; wherein, the push rod 32 is axially provided with a first step shaft 321 for installing the bearing group 34 and a second step shaft 322 for installing the driving block 32a. The diameter of the first step shaft 321 is larger than the diameter of the second step shaft 322. The positioning sleeve 36 is provided on the second step shaft 322. When the push rod 32 drives the driving block 32a to move, the positioning sleeve 36 moves synchronously. When the tensioning action needs to be released, the push rod 32 pulls the driving block 32a to pull the wedge sleeve 31 through the positioning sleeve 36. It should be noted that the gap between the push rod 32 and the inner ring of the bearing group 34 can slide axially in the bearing group 34.

[0052] As a preferred embodiment of the above embodiment, a return spring 35 is provided on a shaft section of the push rod 32 extending from the bearing assembly 34. After the tensioning operation is completed, the multiple push blocks 235 form an annular spacing to ensure smooth passage of the driving block 32a and automatically reset the push rod 32 to its initial state. This allows the push rod 32 to quickly pull the wedge-shaped sleeve 31 to the first inclined surface 232 when the tension is released, thus saving waiting time for release and reducing the time for reel change.

[0053] In a preferred embodiment of the present invention, a positioning cone 238 is provided on the outer side of the tensioning strip 23 away from the toothed structure 231 and in contact with the reel. The positioning cone 238 at the end position and the toothed structure 231 act together on the inner hole of the reel to ensure the coaxiality of the reel after installation.

[0054] Those skilled in the art will appreciate that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manual tensioning device for a carbon fiber winder, characterized in that: include: drive shaft; A tensioning assembly comprising a tensioning sleeve disposed at the front end of the drive shaft, a tensioning seat disposed at the rear end of the drive shaft, and a plurality of tensioning bars uniformly distributed along the circumferential direction and embedded between the tensioning sleeve and the tensioning seat; A push assembly is provided in the tension sleeve, comprising a coaxially arranged wedge-shaped sleeve and a push rod, and an elastic driving member for pushing the wedge-shaped sleeve to move axially, wherein the outer side surface of the wedge-shaped sleeve is provided with an inclined conical surface, and the extending end of the push rod is provided with a driving block; A positioning sleeve is provided between the tension sleeve and the tension seat and is provided with limiting grooves for embedding the plurality of tension strips along the circumferential direction; An end cover is fixed to the front end of the tensioning sleeve via a locking hoop; In which, the outer side surface of the front end of the tensioning strip in contact with the reel is provided with a toothed structure, and the inner side surface facing the tensioning sleeve is provided with a first inclined surface and a second inclined surface that cooperate with the inclined conical surface, and a limiting step surface is provided between the first inclined surface and the second inclined surface. The end of the tensioning strip located on the second inclined surface extends inward to form a pushing block, and the pushing block is provided with a third inclined surface at the front end facing the wedge-shaped sleeve.

2. The manual tensioning device for a carbon fiber winder according to claim 1, characterized in that: The outer circumferential wall of the tension sleeve is provided with through grooves for the insertion of the plurality of tension strips, and the outer cylindrical surface of the tension seat is provided with positioning grooves at positions corresponding to the tension strips; The through groove is relatively extended at the position of the motion track of the toothed structure to form a guide groove.

3. The manual tensioning device for a carbon fiber winder according to claim 2, characterized in that: A protrusion is provided at one end of the tensioning strip located in the positioning groove, and an annular groove for accommodating the protrusion is provided at the end position of the positioning groove.

4. The manual tensioning device for a carbon fiber winder according to claim 3, characterized in that: The width of the annular groove is greater than the width of the protrusion, and an avoidance groove is provided on the step surface of the positioning groove at a position corresponding to the tensioning strip.

5. The manual tensioning device for a carbon fiber winder according to claim 1, characterized in that: An elastic ring is sleeved on the middle cross-section position of the plurality of tensioning strips, and a groove is opened on the tensioning strip. The plurality of grooves form an arc-shaped space for installing the elastic ring in the circumferential direction.

6. The manual tensioning device for a carbon fiber winder according to claim 1, characterized in that: The inner hole of the end cover extends inward away from one end of the tensioning strip to form a first step surface; The wedge-shaped sleeve is provided with a stepped shaft at one end of the end cover, the diameter of the stepped shaft is smaller than the inner hole diameter of the end cover, and the end step surface of the stepped shaft and the first step surface form a telescopic space for accommodating the elastic driving member.

7. The manual tensioning device for a carbon fiber winder according to claim 1, characterized in that: A bearing group is provided in the annular gap between the wedge-shaped sleeve and the push rod.

8. The manual tensioning device for a carbon fiber winder according to claim 7, characterized in that: A first stepped hole and a second stepped hole are provided in the inner hole of the wedge-shaped sleeve, and the diameter of the first stepped hole is larger than the diameter of the second stepped hole; The bearing group is arranged in the first step hole, the diameter of the driving block is smaller than the diameter of the second step hole, and a positioning sleeve is provided between the driving block and the bearing group; The push rod is axially provided with a first stepped shaft for mounting a bearing assembly and a second stepped shaft for mounting a driving block, the diameter of the first stepped shaft is larger than the diameter of the second stepped shaft, and the positioning sleeve is provided on the second stepped shaft; When the push rod drives the driving block to move, the positioning sleeve moves synchronously. When the tensioning action needs to be released, the push rod pulls the driving block to pull the wedge sleeve through the positioning sleeve.

9. The manual tensioning device for a carbon fiber winder according to claim 7, characterized in that: A return spring is provided on a shaft section of the push rod extending out of the bearing assembly.

10. The manual tensioning device for a carbon fiber winder according to claim 1, characterized in that: The outer side surface of the tensioning strip away from the toothed structure and in contact with the reel is provided with a positioning cone surface.

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