Ejector pin device for pay-off rack of single stranding machine

Abstract

The utility model discloses an ejector pin device for a pay-off rack of a single twister, and belongs to the technical field of cable drawing equipment. Comprising a connecting body a and a connecting body b, the connecting body b is a hollow cylinder, the connecting body a is fixedly connected to the left end of the connecting body b through a hexagon socket head cap screw, and a polished rod of the movable end shaft of the pay-off rack of the cantilever single strander is installed in the connecting body b through a bearing. According to the utility model, the large-size ejector pin is easy to process, maintenance personnel can more easily replace or install the bearing connected with the outer thread head of the movable end shaft and the ejector pin device, and meanwhile, the production efficiency of equipment is also improved. The device is simple and compact in structure, reasonable in layout, reliable in operation, convenient to disassemble and assemble and convenient to popularize and use.

Description

Technical Field

[0001] The utility model relates to the technical field of cable production equipment, in particular to a thimble device for a single twisting machine pay-off frame. Background Art

[0002] The cantilever single twisting machine is a kind of mechanical equipment that can be widely used in twisting various soft or hard conductor wires. Many types of wires are operated by this machine.

[0003] The cantilever single-twister pay-off frame for actively paying out the thread by unwinding adopts a shaftless structure. The shaft at one end is fixed, and the shaft head is connected to the thimble via a flat key. The outer thread processed on the movable shaft at the other end is threadedly connected to the nut fixedly installed on the pay-off frame. The movement generated by the rotation of the outer thread is used to clamp or loosen the reel. The thimble installed on the outer thread head is connected to the light rod at the outer thread head through multiple sets of bearings, which mainly support the reel and enable the reel to rotate flexibly. The thimble installed on the outer thread head and the multiple sets of bearings connected to the outer thread head are very easy to be damaged after running for a period of time. If this thimble adopts an integral structure, not only will it be difficult to process large-sized thimbles, but it will also be difficult and time-consuming for maintenance personnel to replace or install multiple sets of bearings, and it will also reduce the production efficiency of the equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a thimble device for the movable end shaft of a cantilever single-twister pay-off stand. This thimble device not only facilitates the processing of large-sized thimbles, but also makes it easier for maintenance personnel to replace or install the bearing connecting the outer thread head of the movable end shaft to the thimble, thereby improving the production efficiency of the equipment. This solves the problems raised in the above-mentioned background technology.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A thimble device for a single-twister pay-off frame includes a connector a2 and a connector b4. The connector b4 is a hollow cylinder. The connector a2 is fixedly connected to the left end of the connector b4 by a hexagonal cylindrical head screw 3. The light rod 51 of the movable end shaft of the cantilever single-twister pay-off frame is installed in the connector b4 through a bearing.

[0007] A cylindrical groove a21 is provided on the left end face of the connector a2, a cylindrical groove b25 is provided in the center of the right end face of the connector a2, and a circle of flanges 24 are provided on the right end face of the connector a2. A number of stepped holes 23 are evenly distributed along the circumferential direction at the bottom of the cylindrical groove a21, and the stepped holes 23 are located outside the flange 24. The side wall of the connector a2 is the wire drum inner hole contact surface 22, and the wire drum inner hole contact surface 22 is composed of a cylindrical surface, a conical surface and a cylindrical surface from left to right.

[0008] A stepped hole is provided in the center of the connector b4, and the stepped hole consists of an inner hole a42, an inner hole b46, an inner hole c44 and an inner hole d45 which are connected in sequence from left to right. The diameter of the inner hole a42 is larger than the diameter of the inner hole b46, the diameter of the inner hole b46 is larger than the diameter of the inner hole c44, and the diameter of the inner hole c44 is smaller than the diameter of the inner hole d45. A through hole 43 is provided on the stepped surface of the inner hole b46, and the other end of the through hole 43 is located on the stepped surface of the inner hole d45. A number of screw holes 41 are evenly distributed along the circumferential direction at the edge of the left end face of the connector b4.

[0009] The polished rod 51 of the movable end shaft is inserted into the stepped hole of the connector b4, and two sets of deep groove ball bearings 7 are installed in the inner hole a42. The outer ring of the deep groove ball bearing 7 and the inner hole a42 adopt a transition fit, and a set of plane bearings 6 are installed in the inner hole d45. The outer ring of the plane bearing 6 and the inner hole d45 adopt a transition fit. The width of the plane bearing 6 is the same as the width of the inner hole d45. The inner rings of the plane bearing 6 and the deep groove ball bearing 7 both adopt a transition fit with the polished rod 51. A groove is machined on the end of the polished rod 51, and a shaft elastic retaining ring 1 is installed in the groove. The shaft elastic retaining ring 1 limits the axial direction of the inner ring of the deep groove ball bearing 7. The diameter of the outer screw rod 5 of the movable end shaft is larger than the diameter of the polished rod 51, and the shaft shoulder of the outer screw rod 5 presses on the plane bearing 6 to limit the axial direction of the plane bearing 6.

[0010] The flange 24 of the connector a2 is inserted into the inner hole a42 of the connector b4 in a transition fit, and the flange 24 presses on the outer ring of the deep groove ball bearing 7 to limit its axial position. The stepped hole 23 is opposite to the screw hole 41, and the hexagonal cylindrical head screw 3 passes through the stepped hole 23 and is screwed into the screw hole 41, thereby fixing the connector a2 and the connector b4 together, and the light rod 51 is clearance-fitted with the cylindrical groove b25 of the connector a2.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0012] This utility model not only makes it easier to process large-sized ejectors, but also makes it easier for maintenance personnel to replace or install the bearing connecting the outer thread head of the movable end shaft and the ejector device, while also improving the production efficiency of the equipment. In summary, the utility model has a simple and compact structure, a reasonable layout, reliable operation, and convenient disassembly and assembly, making it easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 This is a schematic structural diagram of the connector a of the present invention;

[0015] Figure 3 This is a schematic structural diagram of the connector b of the present invention;

[0016] Figure 4 This is a side view of the connector b of the present invention;

[0017] Shown in the figure: 1. Elastic circlip for shaft, 2. Connector a, 21. Cylindrical groove a, 22. Contact surface of inner hole of reel, 23. Stepped hole, 24. Flange, 25. Cylindrical groove b, 3. Hexagon socket head screw, 4. Connector b, 41. Screw hole, 42. Inner hole a, 43. Through hole, 44. Inner hole c, 45. Inner hole d, 46. Inner hole b, 5. External screw, 51. Polished rod, 6. Plane bearing, 7. Deep groove ball bearing. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0021] Example 1

[0022] like Figure 1-4 This embodiment provides a thimble device for a single-twister pay-off frame, including a connector a2 and a connector b4. The connector b4 is a hollow cylinder. The connector a2 is fixedly connected to the left end of the connector b4 by multiple hexagonal cylindrical head screws 3. The light rod 51 of the movable end shaft of the cantilever single-twister pay-off frame is installed in the connector b4 through a bearing.

[0023] The left end face of the connector a2 is provided with a cylindrical groove a21, and the right end face of the connector a2 is provided with a cylindrical groove b25 in the center. The right end face of the connector a2 is provided with a flange 24. The bottom of the cylindrical groove a21 is evenly distributed along the circumference of a number of stepped holes 23, which are located outside the flange 24. The side wall of the connector a2 forms a wire drum inner hole contact surface 22, which is composed of a cylindrical surface, a conical surface, and a cylindrical surface from left to right. The cylindrical groove a21 not only reduces the weight of the connector a2, but also facilitates the use of a special tool to screw the hexagon socket head screw 3 out of the stepped hole 23 or into the screw hole 41.

[0024] A stepped hole is provided in the center of the connector b4, and the stepped hole consists of an inner hole a42, an inner hole b46, an inner hole c44 and an inner hole d45 which are connected in sequence from left to right. The diameter of the inner hole a42 is larger than the diameter of the inner hole b46, the diameter of the inner hole b46 is larger than the diameter of the inner hole c44, the diameter of the inner hole c44 is smaller than the diameter of the inner hole d45, and a through hole 43 is provided on the stepped surface of the inner hole b46. The other end of the through hole 43 is located on the stepped surface of the inner hole d45. The through hole 43 facilitates the removal of the plane washer of the plane bearing 6; a number of screw holes 41 are evenly distributed along the circumferential direction at the edge of the left end face of the connector b4.

[0025] The polished rod 51 of the movable end shaft is inserted into the stepped hole of the connector b4, and two sets of deep groove ball bearings 7 are installed in the inner hole a42. The outer ring of the deep groove ball bearing 7 adopts a transition fit with the inner hole a42, and the outer ring of the deep groove ball bearing 7 is axially limited by the boss formed by the inner hole b46 and the end face of the inner hole a42; a set of plane bearings 6 is installed in the inner hole d45, and the outer ring of the plane bearing 6 adopts a transition fit with the inner hole d45. The width of the plane bearing 6 is the same as the width of the inner hole d45 to prevent the plane bearing from being damaged. 6 Equipment safety accidents caused by the rolling elements of the support frame being thrown out; the inner rings of the plane bearing 6 and the deep groove ball bearing 7 are the same size, and the inner rings of the plane bearing 6 and the deep groove ball bearing 7 are both transitionally matched with the polished rod 51. A groove is processed on the end of the polished rod 51, and a shaft elastic retaining ring 1 is installed in the groove. The shaft elastic retaining ring 1 limits the axial direction of the inner ring of the deep groove ball bearing 7. The diameter of the outer screw 5 of the movable end shaft is larger than the diameter of the polished rod 51, and the shaft shoulder of the outer screw 5 presses on the plane bearing 6 to limit the axis of the plane bearing 6.

[0026] The flange 24 of the connector a2 is transitionally fitted and inserted into the inner hole a42 of the connector b4. The flange 24 presses on the outer ring of the deep groove ball bearing 7 to limit its axial position. The flange 24 also plays a centering role in the connection between the connector a2 and the connector b4; the stepped hole 23 is opposite to the screw hole 41, and the hexagonal cylindrical head screw 3 passes through the stepped hole 23 and is screwed into the screw hole 41, thereby fixing the connector a2 and the connector b4 together. The light rod 51 is clearance-fitted with the cylindrical groove b25 of the connector a2 to prevent the head of the light rod 51 from being stuck on the right side of the connector a2 when the connector a2 and the connector b4 are assembled.

Claims

1. A thimble device for a single stranding machine pay-off frame, comprising a connector a (2) and a connector b (4), wherein the connector b (4) is a hollow cylinder, characterized in that: The connector a (2) is fixedly connected to the left end of the connector b (4) through a hexagonal cylindrical head screw (3), and the light rod (51) of the movable end shaft of the cantilever single twisting machine pay-off frame is installed in the connector b (4) through a bearing.

2. The thimble device for a single-twister pay-off frame according to claim 1, characterized in that: A cylindrical groove a (21) is provided on the left end face of the connector a (2), a cylindrical groove b (25) is provided at the center of the right end face of the connector a (2), a circle of flanges (24) are provided on the right end face of the connector a (2), a plurality of stepped holes (23) are evenly distributed along the circumferential direction at the bottom of the cylindrical groove a (21), and the stepped holes (23) are located outside the flanges (24). The side wall of the connector a (2) is a wire drum inner hole contact surface (22), and the wire drum inner hole contact surface (22) is composed of a cylindrical surface, a conical surface and a cylindrical surface from left to right.

3. The thimble device for a single stranding machine pay-off frame according to claim 2, characterized in that: A stepped hole is provided in the center of the connector b (4), and the stepped hole consists of an inner hole a (42), an inner hole b (46), an inner hole c (44) and an inner hole d (45) which are connected in sequence from left to right. The diameter of the inner hole a (42) is larger than the diameter of the inner hole b (46), the diameter of the inner hole b (46) is larger than the diameter of the inner hole c (44), and the diameter of the inner hole c (44) is smaller than the diameter of the inner hole d (45). A through hole (43) is provided on the stepped surface of the inner hole b (46), and the other end of the through hole (43) is located on the stepped surface of the inner hole d (45). A plurality of screw holes (41) are evenly distributed along the circumferential direction at the edge of the left end face of the connector b (4).

4. The thimble device for a single twisting machine pay-off stand according to claim 3, characterized in that: The polished rod (51) of the movable end shaft is inserted into the stepped hole of the connector b (4), and two sets of deep groove ball bearings (7) are installed in the inner hole a (42). The outer ring of the deep groove ball bearing (7) and the inner hole a (42) adopt a transition fit. A set of plane bearings (6) is installed in the inner hole d (45), and the outer ring of the plane bearing (6) and the inner hole d (45) adopt a transition fit. The width of the plane bearing (6) is the same as the width of the inner hole d (45). The inner rings of the plane bearing (6) and the deep groove ball bearing (7) both adopt a transition fit with the polished rod (51). A groove is machined on the end of the polished rod (51), and a shaft elastic retaining ring (1) is installed in the groove. The shaft elastic retaining ring (1) limits the axial direction of the inner ring of the deep groove ball bearing (7). The diameter of the outer screw rod (5) of the movable end shaft is larger than the diameter of the polished rod (51). The shaft shoulder of the outer screw rod (5) presses on the plane bearing (6) to limit the axis of the plane bearing (6).

5. The thimble device for a single twisting machine pay-off stand according to claim 4, characterized in that: The flange (24) of the connector a (2) is inserted into the inner hole a (42) of the connector b (4) in a transitional fit, and the flange (24) is pressed against the outer ring of the deep groove ball bearing (7) to limit its axial position. The stepped hole (23) is opposite to the screw hole (41), and the hexagonal cylindrical head screw (3) passes through the stepped hole (23) and is screwed into the screw hole (41), thereby fixing the connector a (2) and the connector b (4) together. The light rod (51) is clearance-fitted with the cylindrical groove b (25) of the connector a (2).

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