Adjustable eccentric tensioning shaft of transformer winding machine

Abstract

The utility model belongs to the technical field of transformer winding equipment, and particularly relates to an adjustable eccentric tensioning shaft of a transformer winding machine. The device is organically composed of a main shaft, a main shaft supporting bearing, an eccentric shaft bearing, a bearing gland, a screw head eccentric shaft, eccentric shaft double nuts, eccentric shaft locking double nuts and a jacking mechanism. The device is connected to a spindle box of the winding machine, the screw head eccentric shaft is rotated by rotating the screw head eccentric shaft, the height difference between the eccentric section of the screw head eccentric shaft and the axis of a spindle is reduced, the arc-shaped ejector rod is pushed to be ejected out, and therefore a coil is tensioned. The hexagonal head of the screw head eccentric shaft is reversely rotated to enable the screw head eccentric shaft to rotate, the height difference between the eccentric section of the screw head eccentric shaft and the axis of the main shaft is increased, and the arc-shaped ejector rod retracts under the action of the elastic force of the compression spring, so that the coil is loosened. According to the utility model, the coil can be tensioned or loosened by simply rotating the screw head eccentric shaft by an operator, the operation is simple, and the complicated work of the operator is liberated.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformer winding equipment, and in particular relates to an adjustable eccentric tensioning shaft of a transformer winding machine. Background Art

[0002] In the production of transformers, coil winding is an indispensable part. At present, the winding machine is the main equipment for coil winding. However, when the winding machine is used for coil winding, the diameter of the winding shaft used by the winding machine is fixed; when the coil is wound, it is cumbersome to take out the coil. Utility Model Content

[0003] The utility model provides an adjustable eccentric tensioning shaft of a transformer winding machine, and aims to provide a device which can conveniently take out the coil after the coil is wound.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] An adjustable eccentric tensioning shaft of a transformer winding machine comprises a main shaft, a main shaft support bearing, an eccentric shaft bearing, a bearing gland, a screw head eccentric shaft, an eccentric shaft double nut, an eccentric shaft locking double nut and a tightening mechanism; two sets of main shaft support bearings are arranged at intervals at one end of the main shaft; a central long hole is opened along the central axis at the other end of the main shaft; retaining spring grooves are respectively opened on the side walls of the main shaft adjacent to the two main shaft support bearings, a retaining spring is arranged in each retaining spring groove, and the retaining spring is tightly attached to the main shaft support bearing; a keyway is opened on the side wall of the main shaft, a key is arranged in the keyway, and the keyway is arranged on the inner side of the main shaft support bearing. The inner side of the bearing; the eccentric shaft bearing is arranged in the orifice of the central long hole; one end of the screw head eccentric shaft is placed in the central long hole of the main shaft, and the other end is connected to the eccentric shaft bearing; the eccentric shaft double nut is connected to the screw head eccentric shaft at one end of the orifice of the central long hole, and presses the inner ring of the eccentric shaft bearing; the bearing cover is placed on the outer side of the eccentric shaft bearing and is detachably connected to the main shaft; the eccentric shaft locking double nut is connected to the screw head eccentric shaft on the outer side of the bearing cover; a plurality of push rod holes are opened on the side wall of the main shaft between the key and the eccentric shaft bearing, and a tightening mechanism is connected to each push rod hole.

[0006] It also includes a protective cover; the protective cover is connected to one end of the main shaft connected to the eccentric shaft bearing; the eccentric shaft locking double nut and one end of the screw head eccentric shaft connected to the eccentric shaft bearing are both placed in the protective cover.

[0007] The protective cover is in an arc shape.

[0008] The multiple push rod holes are arranged at intervals on the upper and lower arc surfaces and the front and rear arc surfaces of the main shaft; the center lines of the multiple push rod holes on each arc surface are parallel and perpendicular to the central axis of the main shaft; the center lines of the multiple push rod holes on the upper and lower arc surfaces are perpendicular to the center lines of the multiple push rod holes on the front and rear arc surfaces.

[0009] The clamping mechanism includes an arc-shaped push rod, a compression spring and a spring pressure cover; one end of the arc-shaped push rod is in contact with the eccentric shaft of the screw head; the spring pressure cover is connected to the main shaft; and the spring pressure cover is connected to the other end of the arc-shaped push rod through the compression spring.

[0010] The arc-shaped push rod is an integrated structure consisting of two upper and lower cylinders with different outer diameters; an arc groove is arranged on the upper surface of the upper cylinder, the center line of which is parallel to the center line of the eccentric shaft of the screw head; and a compression spring is sleeved on the lower cylinder.

[0011] One end of the screw head eccentric shaft is a hexagonal head, and a thread is arranged on the lower side wall of the hexagonal head.

[0012] Beneficial effects:

[0013] The utility model is connected to the main shaft box of the winding machine. By rotating the hexagonal head of the screw head eccentric shaft, the screw head eccentric shaft rotates, and the height difference between the eccentric section of the screw head eccentric shaft and the main shaft axis is reduced, pushing the arc-shaped push rod out, thereby tightening the coil. By rotating the hexagonal head of the screw head eccentric shaft in the opposite direction, the screw head eccentric shaft rotates, and the height difference between the eccentric section of the screw head eccentric shaft and the main shaft axis is increased. Under the action of the elastic force of the compression spring, the arc-shaped push rod is retracted, thereby loosening the coil. The utility model can tighten or loosen the coil by the operator simply rotating the screw head eccentric shaft. The operation is simple and the operator is relieved of complicated work.

[0014] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0017] Figure 2 for Figure 1 Cross-sectional view of the middle push rod hole.

[0018] Figure 3 It is a structural schematic diagram of the arc-shaped push rod in the utility model.

[0019] In the figure: 1. main shaft; 2. main shaft support bearing; 3. key; 4. eccentric shaft bearing; 5. bearing pressure cover; 6. screw head eccentric shaft; 7. eccentric shaft double nut; 8. eccentric shaft locking double nut; 9. protective cover; 10. arc-shaped push rod; 11. compression spring; 12. spring pressure cover; 13. push rod hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example:

[0022] according to Figure 1-Figure 3 The adjustable eccentric tensioning shaft of a transformer winding machine shown in the figure comprises a main shaft 1, a main shaft support bearing 2, an eccentric shaft bearing 4, a bearing pressure cover 5, a screw head eccentric shaft 6, an eccentric shaft double nut 7, an eccentric shaft locking double nut 8 and a tightening mechanism; two sets of main shaft support bearings 2 are arranged at intervals at one end of the main shaft 1; a central long hole is opened along the central axis at the other end of the main shaft 1; retaining spring grooves are respectively opened on the side walls of the main shaft 1 close to the two main shaft support bearings 2, and a retaining spring is arranged in each retaining spring groove, and the retaining spring is tightly attached to the main shaft support bearing 2; a keyway is opened on the side wall of the main shaft 1, and a key 3 is arranged in the keyway, and the keyway is arranged on the inner side of the main shaft support shaft The inner side of the bearing 2; the eccentric shaft bearing 4 is arranged in the orifice of the central long hole; one end of the screw head eccentric shaft 6 is placed in the central long hole of the main shaft 1, and the other end is connected to the eccentric shaft bearing 4; the eccentric shaft double nut 7 is connected to the screw head eccentric shaft 6 at one end of the orifice of the central long hole, and presses the inner ring of the eccentric shaft bearing 4; the bearing cover 5 is placed on the outer side of the eccentric shaft bearing 4, and is detachably connected to the main shaft 1; the eccentric shaft locking double nut 8 is connected to the screw head eccentric shaft 6 on the outer side of the bearing cover 5; a plurality of push rod holes 13 are opened on the side wall of the main shaft 1 between the key 3 and the eccentric shaft bearing 4, and a tightening mechanism is connected to each push rod hole 13.

[0023] In actual use, the outer ring of the spindle support bearing 2 is connected and matched with the winding machine spindle box to support the spindle 1 and the rotation of the spindle 1; the key 3 is used to transmit power to drive the spindle 1 to rotate.

[0024] Furthermore, it also includes a protective cover 9; the protective cover 9 is connected to one end of the main shaft 1 connected to the eccentric shaft bearing 4; the eccentric shaft locking double nut 8 and one end of the screw head eccentric shaft 6 connected to the eccentric shaft bearing 4 are both placed in the protective cover 9.

[0025] Furthermore, the protective cover 9 is in an arc shape.

[0026] In specific applications, the protective cover is made of a soft material to prevent the hexagonal head of the screw head eccentric shaft 6 from hitting the operator when the main shaft 1 rotates.

[0027] The soft material in this embodiment is nylon or wood.

[0028] Furthermore, the plurality of push rod holes 13 are arranged at intervals on the upper and lower arc surfaces and the front and rear arc surfaces of the main shaft 1; the center lines of the plurality of push rod holes 13 on each arc surface are parallel and perpendicular to the central axis of the main shaft 1; the center lines of the plurality of push rod holes 13 on the upper and lower arc surfaces are perpendicular to the center lines of the plurality of push rod holes 13 on the front and rear arc surfaces.

[0029] The push rod hole 13 in this embodiment adopts the above technical solution, which can make the contact surface and force of the tensioning coil evenly distributed.

[0030] Furthermore, the tightening mechanism includes an arc-shaped push rod 10, a compression spring 11 and a spring pressure cover 12; one end of the arc-shaped push rod 10 is in contact with the screw head eccentric shaft 6; the spring pressure cover 12 is connected to the main shaft 1; the spring pressure cover 12 is connected to the other end of the arc-shaped push rod 10 through the compression spring 11.

[0031] Furthermore, the arc-shaped push rod 10 is an integrated structure consisting of two upper and lower cylinders with different outer diameters; an arc groove is provided on the upper surface of the upper cylinder, and the center line of the arc groove is parallel to the center line of the eccentric shaft 6 of the screw head; a compression spring 11 is sleeved on the lower cylinder.

[0032] Furthermore, one end of the screw head eccentric shaft 6 is a hexagonal head, and a thread is arranged on the lower side wall of the hexagonal head.

[0033] In actual use, the hexagonal head of the screw head eccentric shaft 6 is rotated to rotate the screw head eccentric shaft 6, and the height difference between the eccentric section of the screw head eccentric shaft 6 and the axis of the main shaft 1 is reduced, pushing the arc-shaped push rod 10 out, thereby tightening the coil. The hexagonal head of the screw head eccentric shaft 6 is rotated by rotating the screw head eccentric shaft 6 in the opposite direction, and the height difference between the eccentric section of the screw head eccentric shaft 6 and the axis of the main shaft 1 is increased. Under the elastic force of the compression spring 11, the arc-shaped push rod 10 is retracted, thereby loosening the coil. The entire operation process is simple, freeing the operator from complicated work.

[0034] In specific applications, the arc groove arranged on the upper surface of the upper cylinder matches the arc side wall of the screw head eccentric shaft 6, ensuring that the process of clamping and releasing the coil is stable and smooth.

[0035] In the absence of conflicts, technicians in this field can combine the relevant technical features in the above examples according to actual conditions to achieve corresponding technical effects. The specific combinations are not described here one by one.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0038] The above is only a preferred embodiment of the utility model. The utility model will not be limited to these embodiments shown in this article, but should conform to the widest range consistent with the principles and novel features disclosed in this article. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model still fall within the scope of the technical solution of the utility model.

Claims

1. An adjustable eccentric tensioning shaft for a transformer winding machine, characterized in that: The invention comprises a main shaft (1), a main shaft support bearing (2), an eccentric shaft bearing (4), a bearing cover (5), a screw head eccentric shaft (6), an eccentric shaft double nut (7), an eccentric shaft locking double nut (8) and a tightening mechanism; two sets of main shaft support bearings (2) are arranged at intervals at one end of the main shaft (1); a central long hole is opened along the central axis at the other end of the main shaft (1); a retaining ring groove is opened on the side wall of the main shaft (1) adjacent to the two main shaft support bearings (2), a retaining ring is arranged in each retaining ring groove, and the retaining ring is closely attached to the main shaft support bearing (2); a key groove is opened on the side wall of the main shaft (1), a key (3) is arranged in the key groove, and the key groove is arranged on the inner side of the inner main shaft support bearing (2); the eccentric shaft bearing (4) is arranged in the opening of the central long hole; one end of the screw head eccentric shaft (6) is placed in the central long hole of the main shaft (1), and the other end is connected to the eccentric shaft bearing (4); the eccentric shaft double nut (7) is connected to the screw head eccentric shaft (6) at one end of the central long hole opening, and presses the inner ring of the eccentric shaft bearing (4); the bearing cover (5) is placed on the outside of the eccentric shaft bearing (4) and is detachably connected to the main shaft (1); the eccentric shaft locking double nut (8) is connected to the screw head eccentric shaft (6) on the outside of the bearing cover (5); a plurality of push rod holes (13) are opened on the side wall of the main shaft (1) between the key (3) and the eccentric shaft bearing (4), and a tightening mechanism is connected to each push rod hole (13).

2. The adjustable eccentric tensioning shaft of a transformer winding machine according to claim 1, characterized in that: It also includes a protective cover (9); the protective cover (9) is connected to one end of the main shaft (1) connected to the eccentric shaft bearing (4); the eccentric shaft locking double nut (8) and one end of the screw head eccentric shaft (6) connected to the eccentric shaft bearing (4) are both placed in the protective cover (9).

3. The adjustable eccentric tensioning shaft of a transformer winding machine as claimed in claim 2, characterized in that: The protective cover (9) is in an arc shape.

4. The adjustable eccentric tensioning shaft of a transformer winding machine according to claim 1, characterized in that: The plurality of push rod holes (13) are arranged at intervals on the upper and lower arc surfaces and the front and rear arc surfaces of the main shaft (1); the center lines of the plurality of push rod holes (13) on each arc surface are parallel and perpendicular to the central axis of the main shaft (1); the center lines of the plurality of push rod holes (13) on the upper and lower arc surfaces are perpendicular to the center lines of the plurality of push rod holes (13) on the front and rear arc surfaces.

5. The adjustable eccentric tensioning shaft of a transformer winding machine according to claim 1, characterized in that: The tightening mechanism comprises an arc-shaped push rod (10), a compression spring (11) and a spring pressure cover (12); one end of the arc-shaped push rod (10) contacts the screw head eccentric shaft (6); the spring pressure cover (12) is connected to the main shaft (1); and the spring pressure cover (12) is connected to the other end of the arc-shaped push rod (10) via the compression spring (11).

6. The adjustable eccentric tensioning shaft of a transformer winding machine as claimed in claim 5, characterized in that: The arc-shaped push rod (10) is an integrated structure consisting of two upper and lower cylinders with different outer diameters; an arc-shaped groove is provided on the upper surface of the upper cylinder, the center line of the arc-shaped groove is parallel to the center line of the screw head eccentric shaft (6); and a compression spring (11) is sleeved on the lower cylinder.

7. An adjustable eccentric tensioning shaft for a transformer winding machine as claimed in claim 1, 2, 5 or 6, characterized in that: One end of the screw head eccentric shaft (6) is a hexagonal head, and a thread is arranged on the lower side wall of the hexagonal head.

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