CN114988205B - Enameled wire drum pay-off - Google Patents

Abstract

The invention relates to the technical field of wire coil paying-off, in particular to an enameled wire coil paying-off device, which comprises a paying-off part, a wire winding part and a wire feeding part, wherein the paying-off part is arranged on the upper end surface of a wire coil and performs coaxial rotation motion relative to the wire coil, and a paying-off path for guiding enameled wires to leave the wire coil and enter wire taking equipment is formed in the paying-off part; a brake part for limiting the rotation speed of the pay-off part or the rotation speed of the wire coil is further arranged between the pay-off part and the wire coil, so that loose deformation of the enameled wire is avoided; the invention can control the paying-off speed of the wire coil and the paying-off path of the enameled wire, avoid the loose dislocation winding condition of the enameled wire and ensure the smooth paying-off process.

Description

Enameled wire reel pay-off device

Technical Field

The invention relates to the technical field of wire drum pay-off, in particular to an enameled wire drum pay-off device.

Background technique

The wire winding machine is a kind of mechanical equipment that can be widely used in various types of soft conductor wires. It can extract single or multiple enameled wires from the wire reel for the next production process to meet the process requirements of the wire.

When the wire-joining machine performs the wire-joining operation, it needs a wire reel to continuously provide the incoming wire. When the wire is fed in, the enameled wire is detached from the wire reel in circles. The wire reel is placed in the wire reel rack. The wire reel itself does not move, but relies on the porcelain guide located above the wire reel rack to complete the high-speed pulling and guiding operation of the enameled wire from the wire reel to the metal wire drawing machine. During the high-speed pulling process, the enameled wire quickly detaches from the wire reel and enters the wire drawing machine; the current domestic wire-unwinding machine is prone to shaking and instability at low speeds, and the wire is easily tangled when unwinding, which does not meet the process requirements; and because of its too fast unwinding speed, it is more likely to cause the enameled wire on the wire reel to scatter, causing the enameled wire to be misaligned and entangled with each other, which will cause the wire supply process to be frequently interrupted, and ultimately cause great trouble to the on-site operators, so it is urgent to solve it.

Summary of the invention

In order to avoid and overcome the technical problems existing in the prior art, the present invention provides an enameled wire reel pay-off device. The present invention can control the speed of the reel pay-off and the pay-off path of the enameled wire, avoid the situation where the enameled wire is loose and misplaced, and ensure the smooth pay-off process.

To achieve the above object, the present invention provides the following technical solutions:

A wire-reel pay-off device for an enameled wire comprises a pay-off portion which is arranged at the upper end surface of the wire reel and performs a coaxial rotational motion relative to the wire reel, wherein a pay-off path is formed in the pay-off portion for guiding the enameled wire to leave the wire reel and enter a wire-taking device; a brake portion is also arranged between the pay-off portion and the wire reel for limiting the rotation speed of the pay-off portion or the rotation speed of the wire reel, thereby preventing the enameled wire from loosening and deforming.

As a further solution of the present invention: the braking part includes a top plate coaxially inserted in the center hole of the line disk and a support rod coaxially rotatably arranged on the upper plate surface of the top plate; a brake disc is sleeved on the outer side of the support rod, which can slide up and down along the axis of the support rod and rotate synchronously with the support rod; a wheel groove is recessed at the outer edge of the brake disc, and the friction strip is embedded in the wheel groove along a U-shaped path, and the two ends of the friction strip are arranged at the same height on the upper plate surface of the top plate, and the friction strip pulls the brake disc to a horizontal position to generate a rotational gap between the brake disc and the top plate; a brake rod is also provided at the brake disc, which can push the brake disc toward the top plate and form a friction deceleration fit between the brake disc and the top plate.

As a further solution of the present invention: the wire-releasing part includes a cantilever hinged on the support rod and extending radially outward along the top plate, the axis of the hinge intersects with the axis of the support rod at right angles, the suspended end of the cantilever is provided with a support arm extending vertically downward and a tension adjustment wheel, and the support arm is provided with a guide wheel; a cross beam extending radially outward along the top plate is also fixedly connected to the top of the support rod, and a wire threading hole is opened at the suspended end of the cross beam; the enameled wire wound on the wire drum is changed in direction by the guide wheel and the tension adjustment wheel in turn, and then travels to the external wire-taking equipment through the wire threading hole.

As a further solution of the present invention: the tension adjustment wheels are divided into two groups and are arranged side by side along the length direction of the cantilever. The axes of the two groups of tension adjustment wheels are perpendicular to the length direction of the cantilever. The two adjacent groups of wheel grooves cooperate to form a wire passing channel whose size and shape match the enameled wire.

As a further solution of the present invention: a guide block is slidably connected to the support arm, and the guide wheel is rotatably connected to the guide block, and the symmetry plane of the guide wheel perpendicular to its own rotation axis and the symmetry plane of the tension adjustment wheel perpendicular to its own rotation axis are both in the same vertical plane.

As a further solution of the present invention: the brake rod is vertically arranged on the cantilever, and the brake rod extends downward to point to the brake disc.

As a further solution of the present invention: both ends of the friction strip are connected to a brake spring, the other end of the brake spring is coaxially connected to a screw, two guide columns extending vertically upward are arranged on the top plate, each guide column is provided with a limiting hole at the same height for the screw to pass through, and a nut is provided on the screw to adjust the elasticity of the brake spring by changing the extension length of the screw.

As a further solution of the present invention: the support rod and the top plate are connected to each other by a bearing arranged vertically with the rotation axis, an annular protrusion is coaxially arranged below the brake disc on the support rod, and a return spring is arranged between the annular protrusion and the brake disc, and the return spring is sleeved on the outer side of the support rod.

As a further solution of the present invention: a limit rod for limiting the upward rotation angle of the cantilever is also arranged on the support rod.

As a further solution of the present invention: the part of the support rod that slides together with the brake disc is in the shape of a rectangular parallelepiped, and the center hole of the brake disc is in a shape that matches the rectangular parallelepiped section of the support rod; a brake sleeve extending vertically downward is coaxially arranged at the bottom of the brake disc, and a brake pad that can form a friction deceleration fit with the brake sleeve is provided on the top plate.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention can control the wire reel pay-off speed and the enameled wire pay-off path during the wire pay-off process, thereby avoiding the situation where the enameled wire is loose, misplaced and entangled, and ensuring that the wire pay-off process proceeds smoothly.

2. The friction strip of the present invention can pull the brake disc to a horizontal position, thereby generating a rotation gap between the brake sleeve and the brake pad arranged at the bottom of the brake disc, so that the brake disc is only subjected to the friction resistance generated by the friction strip; and when the brake disc rotates stably, the friction force generated by the friction strip on the brake disc is constant, thereby maintaining a stable rotation speed. When the device is in normal operation, the two tension adjustment wheels clamp the enameled wire, so that the enameled wire pulled out has a certain tension strength to avoid loosening; at the same time, the cantilever will also tilt upward, releasing the restriction of the brake lever on the brake disc, so that the brake disc is in a horizontal state and is only subjected to the friction of the friction strip. When the wire drawing device stops working, the cantilever loses the lifting effect of the enameled wire and falls instantly. The brake lever presses against the brake disc and presses the brake disc against the upper plate surface of the top plate, relying on the friction force to stop the rotation of the brake disc instantly, avoiding the support rod from continuously releasing the wire and loosening the enameled wire on the wire disc. At this time, the friction strip is stretched from the horizontal position to the inclined position, increasing the friction between the friction strip and the brake disc, and further quickly stops the rotation of the brake disc.

3. Under the action of the limit rod, the present invention can prevent the cantilever from tilting up too much. By limiting the tilting angle, the time for the cantilever to fall can be reduced, the braking speed can be accelerated, and the excessive rotation of the support rod can be avoided.

4. The present invention uses a support rod that rotates around the wire drum to pay out the wire, and a guide wheel and a power adjustment wheel are provided for adjusting the direction, which can speed up the payout and improve the stability of the payout process. The guide block can slide up and down along the support arm, which can play a certain guiding role, thereby improving the efficiency of the payout; and in order to reduce the influence of the weight of the support arm, the guide block and the guide wheel on the cantilever tilting, a lightweight material is used. Alternatively, the support arm can be partially removed, and the enameled wire can be directly pulled by the tension adjustment wheel.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic structural diagram of the braking part of the present invention.

FIG3 is a cross-sectional view of the present invention.

FIG. 4 is an enlarged schematic diagram of the structure at position Ⅰ in FIG. 3 .

In the figure:

a. Wire reel; b. Enameled wire;

10. Braking part; 11. Top plate; 111. Guide column; 112. Brake pad;

12. Support rod; 13. Brake disc; 131. Brake sleeve;

14. friction strip; 141. brake spring; 142. screw rod; 143. nut;

15. annular protrusion; 16. return spring; 17. limit rod;

18, beam; 181, threading hole;

20. line-releasing part; 21. cantilever; 211. brake lever; 212. tension-adjusting wheel;

22. Support arm; 221. Guide block; 222. Guide wheel.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Please refer to Figures 1 to 4. In the embodiment of the present invention, the wire drum a used is a common drum-type wire drum a on the market, and a through hole, namely a center hole, is opened in the center of the wire drum a. The center hole also becomes a key position for installing the device.

The brake part 10 includes a disc-shaped top plate 11, on the lower plate surface of the top plate 11, a cylindrical protrusion extending downward is coaxially arranged, and the top plate 11 is coaxially fixed and inserted into the center hole of the wire drum a through the protrusion. A cylindrical countersunk hole is coaxially recessed on the upper plate surface of the top plate 11, and a support rod 12 is arranged in the countersunk hole to rotate around the axis of the countersunk hole. The support rod 12 and the top plate 11 are connected to each other through a bearing arranged vertically with the rotation axis, thereby forming a vertical connection between the support rod 12 and the top plate 11.

The support rod 12 is a cylindrical long rod as a whole, and a rectangular parallelepiped is formed at the bottom thereof by grinding. A brake disc 13 is sleeved on the rectangular parallelepiped, which is coaxially arranged with the support rod 12. The brake disc 13 rotates synchronously with the support rod 12 and can move up and down in the rectangular parallelepiped section along the axial direction of the support rod 12. An annular protrusion 15 coaxial with the support rod 12 is arranged at the position of the step at the lower end of the rectangular parallelepiped section. A return spring 16 is compressed between the annular protrusion 15 and the brake disc 13. The return spring 16 is sleeved on the outside of the support rod 12. The return spring 16 can push the brake disc 13 upward to prevent it from contacting the top plate 12 during operation.

The outer edge of the brake disc 13 is recessed with a wheel groove, and the friction strip 14 is engaged with the wheel groove along a U-shaped path. Both ends of the friction strip 14 are connected to brake springs 141, and the other end of the brake spring 141 is coaxially connected to a screw 142. Two guide columns 111 extending vertically upward are arranged on the top plate 11, and each guide column 111 is provided with a limit hole at the same height for the screw 142 to pass through, and a nut 143 is arranged on the screw 142 to adjust the elasticity of the brake spring 141 by changing the extension length of the screw 142. At this time, the step at the upper end of the rectangular parallelepiped segment limits the highest position of the brake disc 13 on the support rod 12, and when the brake disc 13 is at the highest position, the friction strip 14 sleeved on the outer side thereof is in a horizontal position.

When the brake disc 13 rotates, the length of the screw rod 142 extending outward can be adjusted by the nut 143, thereby adjusting the friction between the friction strip 14 and the brake disc 13, and then controlling the rotation speed of the support rod 12. Under the action of the friction strip 14 and the return spring 16, the brake disc 13 is pulled to a horizontal position to generate a rotation gap between the brake disc 13 and the top plate 11. The bottom of the brake disc 13 is coaxially provided with a brake sleeve 131 extending vertically downward, and a brake pad 112 is provided on the top plate 11 to form a friction reduction fit with the brake sleeve 131.

The wire-releasing part 20 includes a cantilever 21 hinged on the support rod 12 and extending radially outward along the top plate 11. In order to facilitate the cantilever 21 to be hinged on the support rod 12, a rectangular hole is opened on the support rod 12, and the tail end of the cantilever 21 is hinged in the hole, and the axis of the hinge is perpendicular to the axis of the support rod 12. A support arm 22 extending vertically downward and a tension adjustment wheel 212 are arranged at the suspended end of the cantilever 21, and a brake rod 211 that can push the brake disc 13 toward the top plate 11 and form a friction deceleration fit between the brake disc 13 and the top plate 11 is also arranged at the position above the brake disc 13 on the cantilever 21. The brake rod 211 is vertically arranged on the cantilever 21, and the brake rod 211 extends downward to point to the brake disc 13. A limit rod 17 for limiting the upward rotation angle of the cantilever 21 is also arranged on the support rod 12, which can prevent the cantilever 21 from tilting up too much.

There are two sets of tension adjustment wheels 212 arranged side by side along the length direction of the cantilever 21. The axes of the two sets of tension adjustment wheels 212 are perpendicular to the length direction of the cantilever 21. The two adjacent sets of wheel grooves cooperate to form a wire passage whose size and shape match the enameled wire b.

The support arm 22 is slidably connected with a guide block 221, and the guide wheel 222 is rotatably connected to the guide block 221, and the symmetric plane of the guide wheel 222 perpendicular to its own rotation axis and the symmetric plane of the tension adjustment wheel 212 perpendicular to its own rotation axis are both in the same vertical plane. When in use, the guide wheel 222 mainly plays a guiding role to prevent the enameled wire b from scratching the top plate 11; when the guide block 221 slides to the highest point, the guide block 221 is pressed against the lower surface of the top plate 11; if necessary, the guide block 221 can also be fixed on the support arm 22, which can also play a guiding role.

A crossbeam 18 extending radially outward along the top plate 11 is also fixedly connected to the top of the support rod 12, and a threading hole 181 is provided at the suspended end of the crossbeam 18; the enameled wire b wound on the wire drum a is changed in direction by the guide wheel 222 and the tension adjustment wheel 212 in turn, and then passes through the threading hole 181 to the external wire taking equipment.

When the device is operating normally, the two tension adjustment wheels 212 clamp the enameled wire b, so that the enameled wire b pulled out has a certain tension strength to prevent it from loosening; at the same time, the cantilever 21 will also tilt upward, releasing the restriction of the brake rod 211 on the brake disc 13, so that the brake disc is in a horizontal state and is only affected by the friction of the friction strip 14. When the wire-taking device stops working, the cantilever 21 loses the lifting effect of the enameled wire b and falls instantly. The brake rod 211 presses against the brake disc 13 and presses the brake disc 13 against the upper plate surface of the top plate 11, relying on the friction force to stop the brake disc 13 from rotating instantly, avoiding the support rod 12 from continuously releasing the wire and making the enameled wire b on the wire disc a loose. At this time, the friction strip 14 is stretched from the horizontal position to the inclined position, increasing the friction between the friction strip 14 and the brake disc, and further quickly stopping the rotation of the brake disc 13.

The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims (3)

1. The wire paying-off device for the enameled wire coil is characterized by comprising a paying-off part (20) which is arranged at the upper end face of the wire coil (a) and performs coaxial rotation motion relative to the wire coil (a), wherein a paying-off path for guiding the enameled wire (b) to be separated from the wire coil (a) and enter wire taking equipment is formed on the paying-off part (20); a braking part (10) for limiting the rotating speed of the paying-off part (20) or the rotating speed of the wire coil (a) is further arranged between the paying-off part (20) and the wire coil (a), so that loose deformation of the enameled wire (b) is avoided;

the braking part (10) comprises a top plate (11) coaxially inserted into the central hole of the wire coil (a) and a supporting rod (12) coaxially and rotatably arranged on the upper plate surface of the top plate (11); a brake disc (13) which can slide up and down along the axial direction of the support rod (12) and synchronously rotate along with the support rod (12) is sleeved on the outer side of the support rod (12); a wheel groove is concavely formed in the outer edge of the brake disc (13), a friction strip (14) is embedded with the wheel groove along a U-shaped path, the two ends of the friction strip (14) are arranged on the upper plate surface of the top plate (11) at equal heights, and the friction strip (14) pulls the brake disc (13) to a horizontal position so that a rotation gap is formed between the brake disc (13) and the top plate (11); a brake lever (211) which can push the brake disc (13) to the top plate (11) and form friction deceleration fit between the brake disc (13) and the top plate (11) is also arranged at the brake disc (13);

the paying-off part (20) comprises a cantilever (21) hinged on the supporting rod (12) and extending outwards along the radial direction of the top plate (11), the axis of the hinged part is perpendicularly intersected with the axis of the supporting rod (12), a support arm (22) extending downwards vertically and a tension adjusting wheel (212) are arranged at the suspension end of the cantilever (21), and a guide wheel (222) is arranged on the support arm (22); a cross beam (18) extending outwards along the radial direction of the top plate (11) is fixedly connected to the top of the supporting rod (12), and a threading hole (181) is formed in the suspension end of the cross beam (18); the enameled wire (b) wound on the wire coil (a) is changed to the back through the guide wheel (222) and the tension adjusting wheel (212) in sequence and then goes to external wire taking equipment through the threading hole (181);

the tension adjusting wheels (212) are arranged in two groups side by side along the length direction of the cantilever (21), the axes of the two groups of tension adjusting wheels (212) are perpendicular to the length direction of the cantilever (21), and two adjacent groups of wheel grooves are matched to form a wire passing channel with the same size and shape as the enameled wire (b);

the support arm (22) is connected with a guide block (221) in a sliding way, the guide wheel (222) is connected to the guide block (221) in a rotary way, and a symmetrical plane of the guide wheel (222) perpendicular to the rotation axis of the support arm and a symmetrical plane of the tension adjusting wheel (212) perpendicular to the rotation axis of the support arm are both positioned in the same vertical plane;

the brake lever (211) is vertically arranged on the cantilever (21), and the brake lever (211) extends downwards to point to the brake disc (13);

the support rod (12) and the top plate (11) are connected through bearings with a rotation axis arranged vertically, an annular bulge (15) is coaxially arranged below the support rod (12) and positioned below the brake disc (13), a return spring (16) is arranged between the annular bulge (15) and the brake disc (13), and the return spring (16) is sleeved on the outer side of the support rod (12);

the part of the support rod (12) in sliding fit with the brake disc (13) is cuboid, and the central hole of the brake disc (13) is matched with the cuboid section of the support rod (12); the bottom of the brake disc (13) is coaxially provided with a brake sleeve (131) which extends downwards vertically, and a brake pad (112) which can form friction speed reduction fit with the brake sleeve (131) is arranged on the top plate (11).

2. The wire coil paying-off device for enameled wire according to claim 1, characterized in that both ends of the friction bar (14) are connected with a brake spring (141), the other end of the brake spring (141) is coaxially connected with a screw rod (142), two guide posts (111) extending vertically upwards are arranged on the top plate (11), limit holes for the screw rod (142) to pass through are formed in the guide posts (111) at equal heights, and a nut (143) for adjusting the elasticity of the brake spring (141) by changing the extending length of the screw rod (142) is arranged on the screw rod (142).

3. The wire coil paying-off device according to claim 2, wherein the supporting rod (12) is further provided with a limiting rod (17) for limiting the upward rotation angle of the cantilever (21).