A gear die and winding machine for winding foil vertical roll products

Abstract

The present invention provides a gear die and a winding machine for winding foil-type vertical roll products, which relate to the technical field of transformer manufacturing. The gear die for winding foil-type vertical roll products comprises a gear plate, a positioning shaft 1 is arranged on one side of the gear plate, a positioning ring is sleeved on the outer side of the positioning shaft 1, at least two positioning shafts 2 are circumferentially arranged on the side of the positioning ring close to the gear plate, a gap exists between the end of the positioning shaft 2 and the gear plate, the axis of the positioning shaft 2 is parallel to the axis of the positioning shaft 1, a positioning bearing is sleeved on the positioning shaft 2, and the positioning bearing is arranged opposite to the outer circumferential surface of the positioning shaft 1. The beneficial effect of the present invention is that it can reduce the wear of the gear die, extend the service life of the gear die, and improve the safety of the gear die and the coil processed by it.

Description

Technical Field

[0001] The invention relates to the technical field of transformer manufacturing, and in particular to a gear die and a winding machine for winding foil-type vertical roll products. Background Art

[0002] With the vigorous development of three-dimensional wound core transformers, the power distribution manufacturing industry has begun to manufacture this type of transformer on a large scale. In the manufacturing process of three-dimensional wound core transformers, due to the shortcomings of traditional wire-wound structures such as high product cost, weak short-circuit resistance, and greater difficulty in processing and manufacturing, in recent years, amorphous and silicon steel vertical coil products have begun to adopt foil structures to improve product production efficiency and product quality.

[0003] At present, in the manufacturing process of coils with foil structure, it is necessary to use a gear mold to drive the wire to suspend and rotate around the iron core to realize the winding of the transformer coil. However, during the winding process, since the gear part of the gear mold needs to mesh with the driving gear and positioning gear on the equipment for transmission, some sides of the gear mold and the limit wheel on the equipment are subject to high-speed friction and strong extrusion during the winding process, and the gear mold cannot be lubricated, which can easily lead to serious wear between the positioning ring and the gear disk in the gear mold and make it easy for iron filings to fall off, thereby shortening the service life of the gear mold and causing certain quality and safety risks to the transformer itself. Summary of the invention

[0004] The technical problem solved by the present invention is to provide a gear die and a winding machine for winding a foil vertical roll product without wear, so as to extend the service life of the gear die and improve the safety of the gear die and the coil processed by the gear die.

[0005] In order to solve the above technical problems, on the one hand, the present invention provides a gear mold for winding a foil-type vertical roll product, which includes a gear plate, a positioning shaft one is provided on one side of the gear plate, a positioning ring is sleeved on the outer side of the positioning shaft one, and at least two positioning shafts two are circumferentially arranged on the side of the positioning ring close to the gear plate, there is a gap between the end of the positioning shaft two and the gear plate, the axis of the positioning shaft two is parallel to the axis of the positioning shaft one, and a positioning bearing is sleeved on the positioning shaft two, and the positioning bearing is arranged opposite to the outer circumferential surface of the positioning shaft one.

[0006] In this way, when the gear mold provided by the present invention is used for winding, on the one hand, since there is a gap between the gear plate and the positioning ring in the axial direction, and the positioning and transmission between the gear plate and the positioning ring are completed by the positioning bearing, the gear plate and the positioning ring in the present invention only transmit radial extrusion force, and do not transmit power, thereby reducing the wear caused by relative movement between the gear plate and the positioning ring, and increasing its service life by more than five times; at the same time, since there is no direct contact between the gear plate and the positioning ring in the present invention, the present invention can reduce the processing difficulty of the gear mold, that is, the gear mold in the present invention only needs to heat treat the teeth of the gear plate, and there is no need to perform high-intensity heat treatment on the side of the gear plate opposite to the positioning ring and the outer circumferential surface of the positioning shaft, thereby greatly reducing the production difficulty of the relevant mold and shortening the processing cycle of the relevant mold; on the other hand, since the positioning ring and the gear plate in the present invention are positioned by the positioning bearing arranged at the inner ring of the positioning ring, the present invention can ensure that the entire gear mold does not contact the iron core, thereby completely avoiding the gear mold from wearing the iron core.

[0007] Furthermore, a step surface is provided on the outer circumference of the positioning shaft 1, and a side of the outer ring of the positioning bearing away from the positioning ring contacts the step surface, and the outer ring of the positioning bearing is positioned and supported by the step surface.

[0008] Furthermore, the positioning ring includes at least two arc-shaped positioning ring monomers, and all the positioning ring monomers are sequentially connected end to end and assembled to form the positioning ring, thereby facilitating the installation of the positioning ring.

[0009] Furthermore, a snap-fit ​​groove is provided at one end of the positioning ring monomer, and a snap-fit ​​protrusion is provided at the other end of the positioning ring monomer. The shape of the snap-fit ​​protrusion is adapted to the shape of the snap-fit ​​groove, and the snap-fit ​​protrusion can be snap-fitted with the snap-fit ​​groove on the adjacent positioning ring monomer. The shapes of the snap-fit ​​protrusion and the snap-fit ​​groove are preferably arc-shaped, trapezoidal or other shapes with self-locking functions, so that they are safely and reliably connected together.

[0010] Furthermore, a fastener 1 is connected between the snap-fit ​​groove 1 and the corresponding snap-fit ​​protrusion 1, and the two adjacent positioning ring monomers are detachably connected together through the fastener 1.

[0011] Furthermore, the gear plate includes at least two arc-shaped gear plate monomers, and all the gear plate monomers are sequentially connected end to end and assembled to form the gear plate, thereby facilitating the installation of the gear plate.

[0012] Furthermore, one end of the gear plate monomer is provided with a second snap-in groove, and the other end of the gear plate monomer is provided with a second snap-in protrusion, the shape of the second snap-in protrusion is adapted to the shape of the second snap-in groove, the second snap-in protrusion can be snap-fitted with the second snap-in groove on the adjacent gear plate monomer, and the shapes of the second snap-in protrusion and the second snap-in groove are also preferably shapes with self-locking functions such as superior arc shape, trapezoidal shape, etc.

[0013] Furthermore, a second fastener is connected between the second clamping groove and the corresponding second clamping protrusion, and the two adjacent gear plate monomers are detachably connected together through the second fastener.

[0014] Furthermore, a coil installation shaft and a copper bar placement groove are provided on the side of the gear disk away from the positioning ring, and the fiberglass cylinder used for winding the wire is fixed and supported by the coil installation shaft, and the soft copper bar used for the coil head is placed through the copper bar placement groove. In this way, when winding, the technician can bend the soft copper bar 90° and put it into the copper bar placement groove; after the winding is completed, the soft copper bar is erected to protect the coil head during the winding process to avoid damage to the coil head.

[0015] On the other hand, the present invention also provides a winding machine for winding foil-type vertical roll products, which includes a frame, on which the gear mold for winding foil-type vertical roll products is installed, and on which a driving gear and a limiting wheel are also installed, wherein the driving gear is meshed with the gear plate, and the limiting wheel is located on one side of the positioning ring. In this way, the present invention can radially squeeze and position the positioning ring through the limiting wheel, thereby realizing the positioning action of the entire gear mold; the driving gear drives the gear plate to rotate unidirectionally, thereby realizing the winding action.

[0016] It can be seen from the above technical solutions that the present invention has the following advantages:

[0017] 1. In the gear die for winding foil vertical roll products provided by the present invention, the positioning of the gear die and the gear transmission are separately arranged, so that the gear plate and the positioning ring in the present invention only transmit radial extrusion force, and do not transmit power, thereby reducing the wear caused by relative movement between the gear plate and the positioning ring, and increasing the service life by more than five times;

[0018] 2. Since the gear plate and the positioning ring in the present invention are not in direct contact, the present invention can reduce the difficulty of processing the gear mold, that is, the gear mold in the present invention only needs to perform heat treatment on the gear plate teeth, and no high-intensity heat treatment is required on the side of the gear plate opposite to the positioning ring and the outer circumferential surface of the positioning shaft 1, thereby greatly reducing the production difficulty of the relevant molds and greatly shortening the processing cycle of the relevant molds and gear molds, thereby improving the economic benefits of the entire gear mold;

[0019] 3. In the gear die for winding foil vertical roll products provided by the present invention, since the force borne by the gear plate is reduced, the gear plate no longer uses the mold steel 42GrMo, and directly uses 45 steel as the raw material;

[0020] 4. When the foil vertical roll product winding gear die provided by the present invention is used for winding, the positioning ring, the iron core and the limiting wheel on the frame are relatively still, and the entire gear die does not contact the iron core, thereby completely avoiding the gear die from wearing the iron core. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the structure of Example 1 of the present invention.

[0023] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0024] Figure 3 This is a schematic diagram of the structure of the gear plate connection in Example 1 of the present invention.

[0025] Figure 4 This is a schematic diagram of the structure of the positioning ring in Example 1 of the present invention.

[0026] Figure 5 A schematic diagram of the three-dimensional structure of embodiment 1 of the present invention.

[0027] Figure 6 It is a structural schematic diagram of Example 1 of the present invention when it is in working state.

[0028] Figure 7 This is a schematic diagram of the structure of Example 2 of the present invention.

[0029] In the figure: 1, positioning ring, 2, positioning bearing, 3, positioning shaft 2, 4, coil mounting shaft, 5, fastener 2, 6, gear plate, 7, fastener 1, 8, positioning shaft 1, 9, clamping protrusion 2, 10, step surface, 11, gear plate monomer, 12, outlet soft copper busbar, 13, coil, 14, fiberglass cylinder, 15, iron core, 16, driving gear, 17, limiting wheel, 18, copper busbar placement groove. DETAILED DESCRIPTION

[0030] 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.

[0031] Example 1

[0032] like Figures 1 to 6 As shown, this embodiment 1 provides a gear die for winding foil vertical roll products, which includes a gear plate 6, one side of which is provided with a coil installation shaft 4 for supporting and installing a glass fiber reinforced plastic cylinder 14, and a copper bar placement groove 18 for placing a soft copper bar 12 for placing the coil head; a positioning shaft 1 8 is provided in the middle of the other side of the gear plate 6, and a positioning ring 1 is sleeved on the outer side of the positioning shaft 1 8. The positioning ring 1 is provided with at least two positioning shafts 2 3 along the circumferential direction on the side close to the gear plate 6, and an iron core avoidance space is provided between the positioning shafts 2 3, there is a gap between the end of the positioning shaft 2 3 and the surface of the gear plate 6, the axis of the positioning shaft 2 3 is parallel to the axis of the positioning shaft 1 8, and the positioning shafts 2 3 are sleeved with positioning bearings 2, the positioning bearings 2 and the positioning shaft 2 3 are interference fit, and the fitting accuracy is controlled within 0.02mm. In addition, the locating bearing 2 is preferably a self-lubricating bearing, and the locating bearings 2 are all arranged opposite to the outer circumferential surface of the locating shaft 8, and the roundness accuracy of the circle formed when the centers of all the locating bearings 2 are combined together is controlled within ±0.02mm, and the gap between the outer circumference of the locating bearing 2 and the outer circumference of the locating shaft 8 is controlled within 0.03mm, thereby ensuring that the locating bearing 2 is evenly stressed during the winding process, and the gear plate 6 rotates smoothly during the winding process, thereby ensuring that the arrangement accuracy of the wire wound by the coil 13 during the winding process meets the requirements.

[0033] In addition, in order to facilitate the positioning and support of the positioning ring 1 and the positioning bearing 2, the present invention also provides a step surface 10 on the outer circumference of the positioning shaft 1 8, and makes the side of the outer ring of the positioning bearing 2 away from the positioning ring 1 contact with the step surface 10, so that the present invention can support and axially position the positioning bearing 2 through the step surface 10. In order to reduce the axial size of the entire gear mold, the present invention also provides an annular groove on the side opposite to the positioning ring 1 on the gear plate 6, and the annular groove surrounds the outer circumference of the positioning shaft 1 8, and makes the end of the positioning ring 1 close to the gear plate 6, and the end of the positioning bearing 2 and the positioning shaft 2 3 close to the gear plate 6 are all located in the annular groove, thereby reducing the axial size of the entire gear mold.

[0034] In addition, in order to facilitate the installation of the gear plate 6 and the positioning ring 1, the gear plate 6 and the positioning ring 1 are preferably of a split structure. Specifically, the positioning ring 1 includes at least two arc-shaped positioning ring monomers, one end of the positioning ring monomer is provided with a snap-in groove 1, and the other end of the positioning ring monomer is provided with a snap-in protrusion 1, and the shape of the snap-in protrusion 1 is adapted to the shape of the snap-in groove 1, and the snap-in protrusion 1 can be snap-in with the snap-in groove 1 on the adjacent positioning ring monomer, so that all the positioning ring monomers can be connected end to end in sequence and assembled to form the positioning ring 1. Further, in order to improve the connection strength between the positioning ring monomers, the shapes of the snap-in protrusion 1 and the snap-in groove 1 are preferably of a superior arc shape, a trapezoidal shape, or the like with a self-locking function, and a fastener 1 7 is connected between the corresponding snap-in groove 1 and the snap-in protrusion 1, so that they are safely and reliably connected together.

[0035] The gear plate 6 includes at least two arc-shaped gear plate monomers 11, one end of the gear plate monomer 11 is provided with a second clamping groove, and the other end of the gear plate monomer 11 is provided with a second clamping protrusion 9, and the shape of the second clamping protrusion 9 is adapted to the shape of the second clamping groove, and the second clamping protrusion 9 can be clamped with the second clamping groove on the adjacent gear plate monomer 11, so that all the gear plate monomers 11 can be assembled end to end in sequence to form the gear plate 6. Further, in order to improve the connection strength between the gear plate monomers 11, the shape of the second clamping protrusion 9 and the second clamping groove is also preferably a shape with a self-locking function such as a superior arc, a trapezoid, and the second fastener 5 is connected between the corresponding second clamping groove and the second clamping protrusion 9, so that they are safely and reliably connected together.

[0036] In addition, the processing process of the gear plate 6 is as follows:

[0037] 1. Use stamping method to complete the production and processing of the blank of the gear plate 6 at one time;

[0038] 2. Use a CNC machining center to process the overall structure of the gear plate 6, and perform high-frequency quenching and 370° tempering on the teeth of the gear plate 6 to ensure its hardness;

[0039] 3. Use wire cutting to separate the gear plate 6 along the center line, and complete the processing of the second clamping protrusion and the second clamping groove at one time; and the processing gap is controlled within 0.5mm to ensure its matching accuracy.

[0040] The processing process of positioning ring 1 is:

[0041] 1. Use the CNC machining center to process the blank into shape in one step according to the drawing, and process the positioning shaft 2 3;

[0042] 2. Install the locating bearing on the locating shaft 2 3, and use interference fit between the two, and the fit accuracy is controlled within 0.02mm, and the roundness accuracy of all circles connected by the center line of the locating shaft 2 is controlled within 0.02mm;

[0043] 3. After the overall processing is completed, use wire cutting to separate the positioning ring 1 along its center line.

[0044] Example 2

[0045] like Figure 7 As shown, this embodiment 2 provides a winding machine for winding foil-type vertical roll products, which includes a frame, on which the gear mold for winding foil-type vertical roll products described in embodiment 1 is installed, and a driving gear 16 and a limiting wheel 17 are also installed on the frame, the driving gear 16 is meshed with the gear plate 6, the limiting wheel 17 is located on one side of the positioning ring 1, and there is a gap of 1-2mm between the limiting wheel 17 and the positioning ring 1. In this way, the present invention can radially squeeze and position the positioning ring 1 through the limiting wheel 17, thereby realizing the positioning action of the entire gear mold; the driving gear 16 drives the gear plate 6 to rotate unidirectionally, thereby realizing the winding action.

[0046] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0047] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gear die for winding foil vertical roll products, characterized in that: It comprises a gear plate, a positioning shaft 1 is arranged on one side of the gear plate, a positioning ring is sleeved on the outer side of the positioning shaft 1, at least two positioning shafts 2 are circumferentially arranged on the side of the positioning ring close to the gear plate, a gap exists between the end of the positioning shaft 2 and the gear plate, the axis of the positioning shaft 2 is parallel to the axis of the positioning shaft 1, a positioning bearing is sleeved on the positioning shaft 2, and the positioning bearing is arranged opposite to the outer circumferential surface of the positioning shaft 1; a step surface is arranged on the outer circumference of the positioning shaft 1, and a side of the outer ring of the positioning bearing away from the positioning ring contacts the step surface; the positioning ring comprises at least two arc-shaped positioning ring monomers, and all the positioning ring monomers are sequentially connected end to end and assembled to form the positioning ring; a clamping groove 1 is arranged at one end of the positioning ring monomer, The other end of the positioning ring monomer is provided with a snap-on protrusion 1, the shape of which is matched with the shape of the snap-on groove 1, and the snap-on protrusion 1 can be snap-on with the snap-on groove 1 on the adjacent positioning ring monomer; a fastener 1 is connected between the snap-on groove 1 and the corresponding snap-on protrusion 1; the gear plate includes at least two arc-shaped gear plate monomers, and all the gear plate monomers are connected end to end in sequence and assembled to form the gear plate; a snap-on groove 2 is provided at one end of the gear plate monomer, and a snap-on protrusion 2 is provided at the other end of the gear plate monomer, the shape of which is matched with the shape of the snap-on groove 2, and the snap-on protrusion 2 can be snap-on with the snap-on groove 2 on the adjacent gear plate monomer; a fastener 2 is connected between the snap-on groove 2 and the corresponding snap-on protrusion 2.

2. The gear die for winding foil vertical roll products according to claim 1, characterized in that: A coil installation shaft and a copper bar placement groove are arranged on one side of the gear plate away from the positioning ring.

3. A coil winding machine for coiling foil vertical roll products, characterized in that: It comprises a frame, on which is mounted the gear die for winding foil vertical roll products according to claim 2, and on which is also mounted a driving gear and a limiting wheel, wherein the driving gear meshes with the gear plate, and the limiting wheel is located on one side of the positioning ring.

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