Cable filler strip unwinding device

Abstract

The application relates to the field of unwinding equipment, and discloses a cable filling strip unwinding device which is matched with a cable forming device and comprises a base, a core column is vertically fixed in the center of the base, a rotating frame for bearing a material roll is coaxially and rotationally connected to the core column, an adjusting nut is threadedly connected to the top of the core column, a friction plate is sleeved outside the core column, the friction plate is extruded between the rotating frame and the adjusting nut, the required traction force for driving the rotating frame to rotate is controlled by rotating the adjusting nut, and the unwinding speed of the material roll is controlled. The application has the effects of facilitating unwinding and discharging of large bundles of filling strips and adjusting the unwinding speed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of unwinding equipment, in particular to a cable filler strip unwinding device. BACKGROUND

[0002] Filler strips made of flame-retardant or non-flame-retardant fillers are used in the cabling process. The filler strip is generally fan-shaped in cross-section and is an indispensable non-hygroscopic filler material in cable production. It has the characteristics of small density, can effectively reduce the manufacturing cost and weight of the cable, and the oxygen index of the flame-retardant filler strip is as high as 30 or more, which can effectively improve the flame-retardant performance of the cable.

[0003] In order to facilitate transportation, the filler strip is coiled into a roll when it is shipped. During cable processing, the cabling equipment provides traction to pull the filler strip for unwinding. The coiled filler strip has large mass and volume, and there is a problem of inconvenient discharging. The commonly used non-powered unwinding device has the problem of difficult control of the unwinding speed. SUMMARY

[0004] In order to facilitate the unwinding and discharging of large bundles of filler strips and adjust the unwinding speed, the present application provides a cable filler strip unwinding device.

[0005] The cable filler strip unwinding device provided by the present application adopts the following technical scheme:

[0006] A cable filler strip unwinding device comprises:

[0007] A base is fixedly connected with a core column, and an adjusting nut is threadedly connected to the top segment of the core column;

[0008] A rotating frame comprises a sleeve and a stand fixed coaxially, the sleeve is located inside the stand and is rotationally connected with the core column, the top of the sleeve extends horizontally outward to form a placement table, a friction plate is pressed between the placement table and the adjusting nut, the friction plate is sleeved on the outside of the core column, and the stand is used for placing a material roll.

[0009] By adopting the above technical scheme, the coiled cable filler strip is sleeved on the outer periphery of the rotating frame, and the filler strip can be unwound by rotating the stand. The adjusting nut can adjust the pressing force between the friction plate and the placement table, adjust the size of the traction force required for the rotating frame to rotate, and control the unwinding speed to adapt to the cable equipment with different running speeds.

[0010] Further, a friction wheel is in abutment between the friction plate and the adjusting nut, the size of the friction wheel is not less than that of the friction plate, a limiting pin is arranged on one side of the core column, a recess slot is formed in the inner side of the friction wheel and is in concave-convex cooperation with the limiting pin, and the limiting pin is in abutment with the friction plate. The adjusting nut is rotated to adjust the pressing force between the friction wheel and the friction plate.

[0011] By adopting the above technical scheme, the friction wheel is installed between the friction plate and the adjusting nut, which can avoid direct contact between the adjusting nut and the friction plate and reduce the wear of the adjusting nut. The friction wheel with a size not less than that of the friction plate can increase the friction area, fully utilize the friction plate, thereby avoiding stress concentration caused by local compression of the friction plate, and further improving the durability of the friction plate. The limit pin can limit the vertical displacement of the friction plate, so that the friction plate and the placement table are continuously kept in abutting state.

[0012] Further, the core column is provided with a sliding groove in the length direction, the limit pin is slidingly connected in the sliding groove, the bottom wall of the sliding groove is a slope, the friction plate is provided with a connecting hole in the center, and the limit pin can be completely located in the range of the connecting hole by sliding away from the friction plate.

[0013] By adopting the above technical scheme, the limit pin and the sliding groove with a slope bottom wall are slidingly matched, which can facilitate dismounting and replacing the friction plate. When dismounting and replacing the friction plate, the limit pin is slid upward to be located in the range of the connecting hole, so as to take and place the friction plate.

[0014] Further, the limit pin is connected with the core column through a first elastic member, the first elastic member is in a stretched state when the limit pin abuts against the friction plate, and the first elastic member resets to drive the limit pin to slide away from the friction plate when the friction wheel is disengaged from the limit pin.

[0015] By adopting the above technical scheme, when dismounting and replacing the friction plate, the limit pin is automatically slid upward and reset under the elastic force of the first elastic member, thereby reducing the operation of manually opening the limit pin and facilitating dismounting.

[0016] Further, the stand comprises an upper positioning disc, a column and a lower positioning disc, a plurality of columns are supported around the upper positioning disc and the lower positioning disc, the column is hingedly connected with the upper positioning disc, the lower positioning disc is fixedly connected with the sleeve and is provided with a plurality of positioning grooves on the surface from inside to outside for inserting the column, and the inclination angle of the stand is adjusted by replacing the positioning groove for inserting the column.

[0017] By adopting the above technical scheme, the upper positioning disc and the column are hingedly connected, and a plurality of positioning grooves for inserting the column are provided on the lower positioning disc, which can adjust the inclination angle and height of the column to adapt to filling strip rolls with different sizes and different inner diameters.

[0018] Further, the stand further comprises a fixing member used in cooperation with the positioning slot, the positioning slot comprises a sliding part and a plug-in part, the sliding part is arranged in one-to-one correspondence with the stand column, two plug-in parts are symmetrically distributed on both sides of the sliding part, the plug-in part is arrayed with multiple pairs along the length direction of the sliding part, the stand column is inserted into the sliding part, and the fixing member is inserted into the plug-in part to limit the sliding of the stand column.

[0019] By adopting the above technical scheme, since the overall volume and self weight of the stand are large, the fixing member is arranged in plug-in cooperation with the plug-in part, the placement position of the fixing member is adjusted, the stand column does not need to be vertically pulled out and directly horizontally slid to adjust the height and inclination angle of the stand column, and the operation is more convenient.

[0020] Further, the sleeve and the lower positioning disc are connected with a ratchet mechanism, and the ratchet mechanism can enable the sleeve to be engaged and driven in one direction with the lower positioning disc.

[0021] By adopting the above technical scheme, the sleeve and the lower positioning disc are engaged and driven by adopting the detachable ratchet mechanism, compared with the fixed connection mode such as welding, the sleeve and the lower positioning disc are more convenient to assemble and disassemble, the one-way driving can also play a foolproof role and is not prone to errors.

[0022] Further, the ratchet mechanism comprises a ratchet disc and a pawl, the ratchet disc is fixed coaxially with the lower positioning disc, and the pawl is connected with the sleeve through a second elastic member, when the lower positioning disc rotates forward, the pawl is engaged with the ratchet disc, when the lower positioning disc reversely rotates, the ratchet disc pushes the pawl to slide and compresses the second elastic member.

[0023] The cable forming equipment pulls the filler strip to provide power for the rotating frame, when the equipment stops running, the rotating frame will continue to rotate and pay off under the action of inertia, by adopting the above technical scheme, the second elastic member is connected between the pawl and the sleeve to enable the pawl to disengage from the ratchet disc when the lower positioning disc reversely rotates, at this time, the sleeve does not rotate with the lower positioning disc, since the pawl disengages from the ratchet disc, the lower positioning disc can be reversely rotated by manually applying a small pushing force without overcoming the resistance of the friction plate, and the excess filler strip is wound.

[0024] Further, the outer side of the stand is provided with an elastic inverted corner along the height direction.

[0025] By adopting the above technical scheme, the elastic inverted corner is arranged on the outer side of the stand along the height direction, the filler strip wound on the outer periphery of the stand can be vertically fixed, thereby reducing the adverse effect of the mutual stacking and extrusion of the filler strips on the pay-off, and meanwhile, in the later stage of the pay-off, when the remaining filler strip is less, the filler strip and the stand are prevented from loosening to cause the tension in the filler strip to disappear.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. By threadedly connecting the adjusting nut on the fixed core column, and coaxially connecting the sleeve of the rotating frame with the core column, setting the friction plate between the adjusting nut and the sleeve, and changing the pressing force between the adjusting nut and the friction plate to adjust the traction force required for the rotating frame to rotate, the unwinding speed is controlled to adapt to the cable equipment with different running speeds.

[0028] 2. By setting the vertically sliding limiting pin, the vertical displacement of the friction plate is limited, and the friction plate is continuously pressed against the placement table in the use state; in combination with the first elastic member, the limiting pin can be automatically reset to the connection hole range of the friction plate after the friction wheel is removed, thereby simplifying the replacement of the friction plate.

[0029] 3. By setting the ratchet mechanism between the sleeve and the lower positioning disc, and connecting the second elastic member between the pawl and the sleeve, the sleeve and the lower positioning disc can be engaged and transmitted in the working state, and the stand can be freely rotated in the reverse direction without overcoming the resistance of the friction plate, thereby reducing the load when manually winding the excess filler. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic diagram of the cable filler unwinding device of the embodiment of the present application.

[0031] Figure 2 is a schematic diagram of the internal structure of the cable filler unwinding device of the embodiment of the present application.

[0032] Figure 3 is a partial enlarged view of position A in Figure 1

[0033] Figure 4 is a partial enlarged view of position B in Figure 2

[0034] Figure 5 is a schematic diagram of the limiting pin structure. (The friction wheel is not shown)

[0035] Figure 6 is a schematic diagram of the ratchet mechanism of the embodiment of the present application. (The arrow in the figure indicates forward rotation)

[0036] BRIEF DESCRIPTION OF DRAWINGS

[0037] ​​1. Base; 2. Core column; 21. Slide groove; 3. Adjusting nut; 31. Nut gasket; 4. Rotating frame; 41. Sleeve; 411. Placement table; 412. Tray; 413. Stopper; 42. Upper positioning plate; 421. Mounting hole; 43. Column; 431. Elastic chamfer; 44. Lower positioning plate; 441. Positioning groove; 4411. Sliding part; 4412. Connecting part; 45. Fixing part; 451. Latch; 452. Connecting ring; 5. Friction plate; 51. Connecting hole; 6. Friction wheel; 61. Giving groove; 7. Limit pin; 8. First elastic part; 9. Ratchet mechanism; 91. Ratchet plate; 92. Pawl; 93. Second elastic part. DETAILED DESCRIPTION

[0038] The following is combined with Figures 1-6 Provide a clear and complete description of the technical solution of this application.

[0039] An embodiment of the present application discloses a cable filling strip unwinding device.

[0040] Reference Figure 1 、 Figure 2 A cable filling strip unwinding device, used in conjunction with cabling equipment, includes a base 1, a core column 2 is vertically fixed to the center of the base 1, a rotating frame 4 carrying the material roll is coaxially connected to the core column 2, and an adjusting nut 3 is threadedly connected to the top of the core column 2. A friction plate 5 is arranged on the outer shell of the core column 2, and the friction plate 5 is squeezed between the rotating frame 4 and the adjusting nut 3. The adjusting nut 3 is rotated to control the traction force required to drive the rotating frame 4 to rotate, thereby controlling the unwinding speed of the material roll.

[0041] Reference Figure 1 The rotating frame 4 comprises a coaxially fixed sleeve 41 and a frame. The sleeve 41 is located in the center of the frame and is rotatably connected to the core column 2. The frame is an overall conical frame. During unwinding, the material roll is coaxially sleeved around the frame's periphery and rotates with the frame, providing support. The frame further comprises an upper positioning plate 42, columns 43, and a lower positioning plate 44. Four columns 43 are arranged in an array and supported between the upper and lower positioning plates 42 and 44. The diameter of the base 1 can be smaller than that of the lower positioning plate 44 to reduce contact area and wear. To facilitate placement of the material roll, the upper and lower positioning plates 42 and 44 are parallel circular disks, with the upper positioning plate 42 having a smaller diameter than the lower positioning plate 44. The smaller diameter of the upper positioning plate 42 causes the columns 43 to be tilted. To facilitate operation of the adjusting nut 3, the upper positioning plate 42 can be designed as a fan-shaped ring with a central mounting hole 421. In other embodiments, the number of columns 43 can be three, five, or other numbers.

[0042] The elastic inverted edge 431 is arranged on the outward side of the column 43 along the height direction, and can vertically limit the material roll wound on the outer periphery of the column 43, improve the connection strength between the column 43 and the material roll, and reduce the occurrence of idling and slipping. The elastic inverted edge 431 separates the material rolls along the vertical height, and can also reduce the adverse effects of mutual stacking and extrusion of the material rolls on the unwinding; meanwhile, the elastic inverted edge 431 can avoid the loosening between the material roll and the stand to cause the tension in the filling strip to disappear under the condition that the remaining filling strip is less in the later unwinding period.

[0043] With reference to Figure 1 , the column 43 is hingedly connected with the upper positioning disc 42, and the lower positioning disc 44 is provided with a plurality of positioning grooves 441 for inserting the column 43, and the positioning grooves 441 correspond to the columns 43 one by one. By changing the position of the column 43 inserted in the positioning groove 441, the height of the stand and the inclination angle of the column 43 can be adjusted, so that the stand can adapt to material rolls of different sizes and different inner diameters.

[0044] With reference to Figure 1 , Figure 3 , the stand further comprises a fixing member 45 used in cooperation with the positioning groove 441. The positioning groove 441 comprises a sliding portion 4411 and a plug-in portion 4412 which are in communication with each other. The sliding portion 4411 is in the shape of a strip, and the length direction extends along the radial direction of the lower positioning disc 44. The plug-in portion 4412 is in pairs, and is symmetrically distributed on both sides of the sliding portion 4411. The plug-in portion 4412 is arrayed with a plurality of pairs along the length direction of the sliding portion 4411, and the column 43 is movably inserted into the sliding portion 4411. The bottom end of the column 43 can be made into a spherical shape for sliding in the positioning groove 441. The fixing member 45 is composed of two plugs 451 and a connecting ring 452. The plug 451 is inserted into the plug-in portion 4412, the connecting ring 452 is fixedly connected with the plugs 451 on both sides and abuts against the column 43, and the column 43 is limited to slide outward. Since the overall volume and weight of the stand are large, the fixing member 45 is arranged in plug-in cooperation with the plug-in portion 4412, the placement position of the fixing member 45 is adjusted, the height and inclination angle of the column 43 can be adjusted without vertically pulling out and directly sliding horizontally, and the operation is more convenient.

[0045] With reference to Figure 2The sleeve 41 is vertically fixed to the center of the lower positioning disc 44 and detachably connected with the lower positioning disc 44. The sleeve 41 is coaxially sleeved on the core column 2. A plurality of balls can be arranged between the core column 2 and the sleeve 41, so that the rotation of the sleeve 41 is smoother, the wear is reduced, and the friction plate 5 is concentrated to bear the friction. The top of the sleeve 41 horizontally extends outward to form a placement table 411. The friction plate 5 is located above the placement table 411, and the shape and size of the placement table 411 are determined according to the friction plate 5. The friction plate 5 and the adjusting nut 3 are in abutment with the friction wheel 6 and the nut gasket 31, so that the adjusting nut 3 and the friction plate 5 are prevented from directly contacting, and the wear of the adjusting nut 3 is reduced. Preferably, the friction plate 5, the placement table 411 and the friction wheel 6 are discs with the same diameter, so as to maximize the effective area of the friction plate 5 and fully utilize the friction plate 5. In addition, the stress concentration of the friction plate 5 caused by local pressure is avoided, and the durability of the friction plate 5 is improved.

[0046] Referring to Figure 4 , Figure 5 The core column 2 is provided with a sliding groove 21 corresponding to the position of the friction plate 5 on one side in the height direction, and a limiting pin 7 is slidably connected in the sliding groove 21. The inner side of the friction wheel 6 is provided with a recessed groove 61 matched with the limiting pin 7, the limiting pin 7 is pressed by the friction wheel 6 to abut against the upper surface of the friction plate 5, and the rotation of the adjusting nut 3 can adjust the abutting force between the friction wheel 6 and the friction plate 5. The limiting pin 7 can limit the vertical displacement of the friction plate 5, so that the friction plate 5 and the placement table 411 can be kept in abutting state. Since the friction plate 5 is a consumable product and needs to be replaced regularly, the bottom wall of the sliding groove 21 can be formed as an inclined surface, and a connecting hole 51 is arranged in the center of the friction plate 5. When the limiting pin 7 slides to the top end of the sliding groove 21, the limiting pin 7 can be completely located in the range of the connecting hole 51, so that the friction plate 5 is convenient to disassemble and assemble. After the new friction plate 5 is installed, the friction wheel 6 is reinstalled, the friction wheel 6 drives the limiting pin 7 to slide downward and abut against the friction plate 5. In order to further simplify the replacement steps of the friction plate 5, a first elastic member 8 is arranged between the limiting pin 7 and the core column 2, and the first elastic member 8 is preferably a spring. When the limiting pin 7 abuts against the friction plate 5, the first elastic member 8 is in a stretched state, and when the friction wheel 6 is separated from the limiting pin 7, the first elastic member 8 is reset to drive the limiting pin 7 to slide away from the friction plate 5. The limiting pin 7 is automatically slid upward to reset, so that the operation steps of manually opening the limiting pin 7 are reduced.

[0047] Referring to Figure 2 , Figure 6The sleeve 41 is connected and driven with the lower positioning disc 44 by the ratchet mechanism 9. Compared with the fixed connection by welding or integral forming, the detachable connection is more convenient for equipment maintenance. Compared with the bolt fixing or other detachable connection, the ratchet mechanism 9 can make the sleeve 41 be driven by the lower positioning disc 44 in one direction. The one-way drive can also prevent mistakes from being made during operation. The ratchet mechanism 9 comprises the ratchet disc 91 and the pawl 92. The ratchet disc 91 is installed in the center of the lower positioning disc 44.

[0048] The cable forming equipment pulls the filler strip to provide power for the rotating frame 4. When the equipment stops running, the rotating frame 4 will continue to rotate and unwind under the action of inertia, so that a length of excess filler strip will be pulled out. Referring to Figure 6 A second elastic member 93 can be selected to be connected between the pawl 92 and the sleeve 41. The bottom end surface of the sleeve 41 extends horizontally outward to form a tray 412. Two stoppers 413 are arranged in parallel on the tray 412. The pawl 92 is located between the two stoppers 413. Under the limiting action of the stoppers 413, the pawl 92 can only slide in the extension direction of the second elastic member 93. When the lower positioning disc 44 rotates forward (counterclockwise), the pawl 92 is engaged with the ratchet disc 91. When the lower positioning disc 44 rotates reversely (clockwise), the ratchet disc 91 pushes the pawl 92 to slide and compress the second elastic member 93. The second elastic member 93 can make the pawl 92 disengage from the ratchet disc 91 when the lower positioning disc 44 reversely rotates. At this time, the sleeve 41 does not rotate with the lower positioning disc 44. Since the pawl 92 disengages from the ratchet disc 91, it is not necessary to overcome the resistance of the friction plate 5. A small pushing force manually applied can reversely rotate the lower positioning disc 44 to wind the excess filler strip.

[0049] The implementation principle of the cable filler strip unwinding device is as follows. First, the size of the traction force required for unwinding is adjusted according to the running speed of the cable forming equipment. The adjusting nut 3 is rotated to adjust the pressing force between the friction wheel 6 and the friction plate 5. The material roll is sleeved on the outer periphery of the stand. One end of the filler strip is connected with the cable forming equipment. The cable forming equipment drives the stand to rotate forward by the pulling force generated by the filler strip. The pawl 92 is engaged with the ratchet disc 91 to drive the sleeve 41 to rotate. The friction plate 5 overcomes the resistance and rotates relative to the friction wheel 6 to realize unwinding with resistance.

[0050] The above are preferred embodiments of the present application. Obviously, the above-described embodiments are only preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made by those skilled in the art without creative labor on the basis of the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. A cable filler strip pay-off device, characterized by The utility model relates to a material roll placing device, including: Base (1), fixedly connected with core column (2) on base (1), the top section of core column (2) is threadedly connected with adjusting nut (3); Rotary frame (4), including coaxial fixed sleeve (41) and stand, sleeve (41) is located inside stand and is rotatably connected with core column (2), the top of sleeve (41) extends horizontally and outwardly and forms placing table (411), and the friction sheet (5) is extruded between the placing table (411) and the adjusting nut (3), the friction sheet (5) is set on the outside of core column (2), and the stand is used to place material roll; The friction wheel (6) is abutted between the friction sheet (5) and the adjusting nut (3), the friction wheel (6) is not less than the friction sheet (5) in size, one side of core column (2) is equipped with limit pin (7), the inside of friction wheel (6) is opened and is equipped with the accommodation groove (61) of the concave-convex cooperation of limit pin (7), limit pin (7) is abutted to friction sheet (5), and the abutting force between friction wheel (6) and friction sheet (5) is adjusted by rotating adjusting nut (3); Core column (2) is opened along the length direction and is equipped with sliding slot (21), limit pin (7) is slidably connected in sliding slot (21), the bottom wall of sliding slot (21) is inclined, the central part of friction sheet (5) is opened and is equipped with connecting hole (51), and limit pin (7) can be completely located in the range of connecting hole (51) by sliding away from friction sheet (5); Limit pin (7) is connected with first elastic member (8) between core column (2), when limit pin (7) is abutted to friction sheet (5), first elastic member (8) is in the tensile state, when friction wheel (6) is separated from limit pin (7), first elastic member (8) resets to drive limit pin (7) to slide away from friction sheet (5).

2. The cable filler strip pay-off apparatus of claim 1, wherein: The stand includes upper positioning disc (42), stand column (43) and lower positioning disc (44), a plurality of stand columns (43) are supported around between upper positioning disc (42) and lower positioning disc (44), stand column (43) is hingedly connected with upper positioning disc (42), lower positioning disc (44) is fixedly connected with sleeve (41) and is provided with a plurality of positioning grooves (441) for the insertion of stand column (43) on the surface from inside to outside, and the inclination angle of the stand is adjusted by replacing the positioning groove (441) for the insertion of stand column (43).

3. The cable filler strip pay-off apparatus of claim 2, wherein: The stand further comprises a fixing member (45) used in cooperation with the positioning slot (441), the positioning slot (441) comprises a sliding part (4411) and a plug-in part (4412), the sliding part (4411) is provided in one-to-one correspondence with the stand column (43), two plug-in parts (4412) are symmetrically distributed on both sides of the sliding part (4411), the plug-in part (4412) is arrayed with multiple pairs along the length direction of the sliding part (4411), the stand column (43) is inserted into the sliding part (4411), and the fixing member (45) is inserted into the plug-in part (4412) to limit the sliding of the stand column (43).

4. The cable filler strip pay-off apparatus of claim 2, wherein: A ratchet mechanism (9) is connected between the sleeve (41) and the lower positioning disc (44), and the ratchet mechanism (9) can enable the sleeve (41) to be driven in one-way engagement with the lower positioning disc (44).

5. The cable filler strip pay-off apparatus of claim 4, wherein: The ratchet mechanism (9) comprises a ratchet disc (91) and a pawl (92), the ratchet disc (91) is coaxially fixed with the lower positioning disc (44), a second elastic member (93) is connected between the pawl (92) and the sleeve (41), when the lower positioning disc (44) rotates in the forward direction, the pawl (92) is engaged with the ratchet disc (91), and when the lower positioning disc (44) rotates in the reverse direction, the ratchet disc (91) pushes the pawl (92) to slide and compress the second elastic member (93).

6. The cable filler strip pay-off apparatus of claim 1, wherein: The stand is provided with an elastic inverted edge (431) on the outward side in the height direction.

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