A CNC forming machine for transformer oil curtain support strips

Abstract

The present invention provides a transformer oil curtain support strip CNC forming machine, including: a CNC automatic feeding mechanism, used to store and transport electrical paperboard outward; a CNC pressing feeding mechanism, which receives the electrical paperboard supplied from the CNC automatic feeding mechanism and transports it to the exciting flying knife mechanism; the exciting flying knife mechanism, which is used to cut the electrical paperboard into a plurality of oil curtain support strips; a CNC pressing and receiving mechanism, which is used to send out the processed oil curtain support strips; and an electrical paperboard guiding mechanism, which is used to guide and position the electrical paperboard when the CNC pressing and feeding mechanism feeds and the exciting flying knife mechanism cuts. The above CNC forming machine automatically completes the feeding, pressing, guiding, cutting and receiving work, greatly improving the processing efficiency, and the processed oil curtain support strips have the advantages of good finish on both sides, stable size, high output and low labor cost.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, and in particular to a CNC forming machine for transformer oil curtain stays. Background Art

[0002] The heat of the existing transformer coil winding is taken out by the oil in the oil channel, and the oil exchanges heat with the external environment to achieve heat dissipation of the coil winding. The oil curtain stay is the main component of the transformer oil channel. Two adjacent layers of coil winding are separated by multiple oil curtain stays arranged at intervals along the circumferential direction.

[0003] At present, the oil curtain stays are processed by shearing machines. Before shearing, the position of the oil curtain stays needs to be fixed manually, which reduces the processing efficiency and increases the production cost. In addition, after the shearing is completed, there are many burrs on the edges of the oil curtain stays, which not only affects the oil channel flow, but also affects the impedance and transformer performance. In addition, the oil curtain stays are rectangular after shearing, and they need to be placed on a chamfering machine for chamfering, which requires repeated loading and unloading, reducing production efficiency. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of low processing efficiency, high production cost and many burrs of oil curtain support bars in the prior art, thereby providing a transformer oil curtain support bar CNC forming machine with high processing efficiency, low cost and good smoothness.

[0005] To this end, the present invention provides a transformer oil curtain strut CNC forming machine, comprising a CNC automatic feeding mechanism, a CNC clamping feeding mechanism, an exciting flying knife mechanism, a CNC clamping material receiving mechanism and an electrical paperboard guiding mechanism, wherein the CNC automatic feeding mechanism is used to store and transport the electrical paperboard outward; the CNC clamping feeding mechanism receives the electrical paperboard supplied from the CNC automatic feeding mechanism and transports it to the exciting flying knife mechanism; the exciting flying knife mechanism is used to cut the electrical paperboard into a plurality of oil curtain struts; the CNC clamping material receiving mechanism is used to send out the processed oil curtain struts; the electrical paperboard guiding mechanism is used to guide and position the electrical paperboard when the CNC clamping feeding mechanism is feeding and the exciting flying knife mechanism is cutting.

[0006] The magnetic flying cutter mechanism comprises an upper flying cutter assembly and a lower flying cutter assembly. The upper flying cutter assembly is used to cut the top two sides of the oil curtain support strip into chamfers; the lower flying cutter assembly is arranged on the lower side of the upper flying cutter assembly and is used to cut off two adjacent oil curtain support strips.

[0007] The upper flying knife assembly and the lower flying knife assembly respectively have an upper flying knife and a lower flying knife evenly arranged along the length direction of the electrical paperboard, and the upper flying knife and the lower flying knife have a first cutting portion and a second cutting portion respectively used for cutting the oil curtain stays, and the cross-section of the first cutting portion is a trapezoid, and its bottom is a short side, the top is a long side, and the two side sides are oblique sides, and the cross-section of the second cutting portion is a rectangle.

[0008] The electrical paperboard guide mechanism has a U-shaped groove whose width is matched with the electrical paperboard.

[0009] The numerical control automatic feeding mechanism comprises a conveyor belt and a servo motor. The conveyor belt is used to convey the electrical paperboard; the servo motor is suitable for driving the conveyor belt to move.

[0010] Multiple layers of electrical paperboard can be stacked on the conveyor belt, a baffle is provided between the CNC automatic feeding mechanism and the CNC pressing feeding mechanism, and a gap between the bottom of the baffle and the top of the conveyor belt is greater than the thickness of one layer of the electrical paperboard and less than the thickness of two layers of the electrical paperboard.

[0011] The numerically controlled pressing and feeding mechanism and the numerically controlled pressing and receiving mechanism both include a plurality of groups of rubber roller assemblies spaced apart along the conveying direction of the electrical paperboard, and each group of the rubber roller assemblies includes two rubber rollers disposed one above the other and allowing the electrical paperboard to pass through the gap therebetween.

[0012] The magnetic flying knife mechanism is arranged in the cylinder, and the top and the bottom of the cylinder are both provided with dust suction and discharge ports.

[0013] The technical solution of the present invention has the following advantages:

[0014] 1. The transformer oil curtain stay CNC forming machine provided by the present invention, during processing, the electrical paperboard is sequentially passed through the CNC automatic feeding mechanism, the CNC pressing feeding mechanism, and the electrical paperboard guiding mechanism, and then enters the exciting flying knife mechanism for cutting and processing into a plurality of oil curtain stays, and then the CNC pressing material receiving mechanism receives the finished oil curtain stays. The above CNC forming machine automatically completes the feeding, pressing, guiding, cutting and receiving work, greatly improving the processing efficiency. Compared with the shearing processing method of the prior art, compared with the flying knife cutting method, the oil curtain stays processed in this way have the advantages of good finish on both sides, stable size, high output and low labor cost.

[0015] 2. The transformer oil curtain strut CNC forming machine provided by the present invention, the exciting flying knife mechanism includes an upper flying knife assembly and a lower flying knife assembly which are arranged up and down. The upper flying knife assembly is used to cut the top two sides of the oil curtain strut into chamfers for cutting off two adjacent oil curtain struts, thereby completing the chamfering and cutting actions of the oil curtain struts at one time. The processed oil curtain struts have the advantage of good smoothness on both sides.

[0016] 3. The transformer oil curtain stay CNC forming machine provided by the present invention has a first cutting portion with a trapezoidal cross-section, a short side at the bottom, a long side at the top, and oblique sides at both sides, and a second cutting portion with a rectangular cross-section, a rectangle with a width greater than or equal to the width of the short side of the first cutting portion and less than the width of the long side. The structure of the first cutting portion and the second cutting portion can simultaneously complete the chamfering and cutting of two adjacent oil curtain stays, and has the advantage of high processing efficiency.

[0017] 4. The transformer oil curtain stay CNC forming machine provided by the present invention can stack multiple layers of electrical paperboard on the conveyor belt, and a baffle is provided between the CNC automatic feeding mechanism and the CNC pressing feeding mechanism, and the gap between the bottom of the baffle and the top of the conveyor belt is greater than the thickness of one layer of electrical paperboard and less than the thickness of two layers of electrical paperboard. When in use, the operator can place 30 sheets of electrical paperboard on the conveyor belt at one time, and the baffle only allows one sheet of electrical paperboard to pass through at a time, and the above-mentioned baffle has the advantage of simple structure.

[0018] 5. The transformer oil curtain support strip CNC forming machine provided by the present invention, the CNC pressing and feeding mechanism and the CNC pressing and receiving mechanism both include multiple groups of rubber roller assemblies arranged at intervals along the conveying direction of the electrical paperboard, each group of rubber roller assemblies includes two rubber rollers arranged up and down and allowing the electrical paperboard to pass through the gap between the two. During the cutting process, the two rubber rollers rotate towards each other, thereby pressing and conveying the electrical paperboard, thereby ensuring the dimensional stability of the oil curtain support strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of a transformer oil curtain stay CNC forming machine of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the magnetic flying cutter mechanism installed in the cylinder;

[0022] Figure 3 It is a structural schematic diagram of an upper flying knife assembly and a lower flying knife assembly;

[0023] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part A;

[0024] Figure 5 It is a structural schematic diagram of a CNC pressing feeder or a CNC pressing material receiving mechanism;

[0025] Figure 6 It is a structural diagram of the CNC automatic feeding mechanism;

[0026] Figure 7 This is a schematic diagram of the structure of the oil curtain support bar.

[0027] Explanation of the reference numerals: 1. CNC automatic feeding mechanism; 11. Conveyor belt; 2. CNC clamping feeding mechanism; 3. Excitation flying knife mechanism; 31. Upper flying knife assembly; 32. Lower flying knife assembly; 33. First cutting part; 34. Second cutting part; 4. CNC clamping material receiving mechanism; 5. Electrical paperboard guiding mechanism; 6. Oil curtain support bar; 61. Chamfering; 7. Baffle; 8. Rubber roller assembly; 9. Cylinder; 91. Dust suction and exhaust port. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] Example

[0033] This embodiment provides a transformer oil curtain stay CNC forming machine, such as Figure 1 As shown, it includes a numerically controlled automatic feeding mechanism 1, a numerically controlled pressing feeding mechanism 2, a magnetic flying knife mechanism 3, a numerically controlled pressing material receiving mechanism 4 and an electrical paperboard guiding mechanism 5.

[0034] The CNC automatic feeding mechanism 1 is used to store and transport electrical paperboard. Figure 6 As shown, it comprises: a conveyor belt 11 for conveying the electrical paperboard; a servo motor, suitable for driving the conveyor belt 11 to move, and multiple layers of electrical paperboard can be stacked on the conveyor belt 11. A baffle plate 7 is provided between the CNC automatic feeding mechanism 1 and the CNC pressing feeding mechanism 2, and a gap between the bottom of the baffle plate 7 and the top of the conveyor belt 11 is greater than the thickness of one layer of the electrical paperboard and less than the thickness of two layers of the electrical paperboard.

[0035] The CNC pressing and feeding mechanism 2 and the CNC pressing and receiving mechanism 4 are used to receive the electrical paperboard supplied from the CNC automatic feeding mechanism 1 and transport it to the exciting flying knife mechanism 3. The CNC pressing and receiving mechanism 4 is used to send out the processed oil curtain stays. Figure 5 As shown, the numerically controlled pressing and feeding mechanism 2 and the numerically controlled pressing and receiving mechanism 4 both include a plurality of groups of rubber roller assemblies 8 spaced apart along the conveying direction of the electrical paperboard. Each group of the rubber roller assemblies 8 includes two rubber rollers disposed up and down for the electrical paperboard to pass through the gap therebetween. The two rubber rollers rotate toward each other under the drive of a motor, thereby pressing and conveying the electrical paperboard.

[0036] The exciting flying cutter mechanism 3 is arranged in the cylinder 9, which is used to cut the electrical paperboard into a plurality of oil curtain stays 6. The top and bottom of the cylinder 9 are provided with dust suction and discharge ports 91. Figure 2-4 As shown, the magnetizing flying knife mechanism 3 comprises: an upper flying knife assembly 31, which is used to Figure 7 The top two sides of the oil curtain strut 6 shown are cut into chamfers 61; the lower flying knife assembly 32 is arranged on the lower side of the upper flying knife assembly 31, and is used to cut off two adjacent oil curtain struts 6. The upper flying knife assembly 31 and the lower flying knife assembly 32 respectively have an upper flying knife and a lower flying knife evenly arranged along the length direction of the electrical paperboard, and the upper flying knife and the lower flying knife have a first cutting portion 33 and a second cutting portion 34 respectively used to cut the oil curtain strut 6, and the cross-section of the first cutting portion 33 is a trapezoid, and its bottom is a short side, the top is a long side, and the two side sides are beveled sides, and the cross-section of the second cutting portion 34 is a rectangle. In this embodiment, the first cutting portion 33 is an isosceles trapezoid. It should be noted that the shapes of the first cutting portion 33 can be set differently according to the chamfer angles of different oil curtain struts.

[0037] The electrical paperboard guide mechanism 5 is used to guide and position the electrical paperboard when the numerical control pressing feeding mechanism 2 is feeding and the exciting flying knife mechanism 3 is cutting. The electrical paperboard guide mechanism 5 has a U-shaped groove with a width adapted to the electrical paperboard.

[0038] The transformer oil curtain stay CNC forming machine provided by the present invention, during processing, the electrical paperboard is sequentially passed through the CNC automatic feeding mechanism 1, the CNC pressing feeding mechanism 2, and the electrical paperboard guiding mechanism 5, and then enters the exciting flying knife mechanism 3 for cutting and processing into a plurality of oil curtain stays 6, and then the finished oil curtain stays 6 are taken out by the CNC pressing material receiving mechanism 4. The above CNC forming machine automatically completes the feeding, pressing, guiding, cutting and material receiving work, greatly improving the processing efficiency. Compared with the shearing processing method of the prior art, compared with the flying knife cutting method, the oil curtain stays processed in this way have the advantages of good finish on both sides, stable size, high output and low labor cost.

[0039] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A transformer oil curtain stay CNC forming machine, characterized in that: include: A numerically controlled automatic feeding mechanism (1) is used for storing and conveying electrical paperboard outwards; A numerically controlled pressing and feeding mechanism (2) receives the electrical paperboard supplied from the numerically controlled automatic feeding mechanism (1) and transports it to the exciting flying knife mechanism (3); A magnetic flying cutter mechanism (3) is used to cut the electrical paperboard into a plurality of oil curtain stays (6); A numerically controlled pressing and receiving mechanism (4) is used to deliver the processed oil curtain stays (6); The electrical paperboard guide mechanism (5) is used to guide and position the electrical paperboard when the numerical control pressing and feeding mechanism (2) is feeding and the exciting flying knife mechanism (3) is cutting; Wherein, the magnetic flying knife mechanism (3) comprises: An upper flying cutter assembly (31) is used for cutting both sides of the top of the oil curtain support bar (6) into chamfers (61); A lower flying knife assembly (32) is arranged on the lower side of the upper flying knife assembly (31) and is used to cut off two adjacent oil curtain stays (6); The magnetic flying knife mechanism (3) is arranged in a cylinder (9), and dust suction and discharge ports (91) are arranged at the top and the bottom of the cylinder (9).

2. The transformer oil curtain stay CNC forming machine according to claim 1, characterized in that: The upper flying knife assembly (31) and the lower flying knife assembly (32) respectively have an upper flying knife and a lower flying knife evenly arranged along the length direction of the electrical paperboard, and the upper flying knife and the lower flying knife have a first cutting portion (33) and a second cutting portion (34) respectively used for cutting the oil curtain stay (6), the first cutting portion (33) has a trapezoidal cross section, and its bottom is a short side, the top is a long side, and both side sides are oblique sides, and the second cutting portion (34) has a rectangular cross section.

3. The transformer oil curtain stay CNC forming machine according to claim 1 or 2, characterized in that: The electrical paperboard guide mechanism (5) has a U-shaped groove with a width matching that of the electrical paperboard.

4. The transformer oil curtain stay CNC forming machine according to claim 1 or 2, characterized in that: The numerically controlled automatic feeding mechanism (1) comprises: A conveyor belt (11) for conveying the electrical paperboard; A servo motor is suitable for driving the conveyor belt (11) to move.

5. The transformer oil curtain stay CNC forming machine according to claim 4, characterized in that: Multiple layers of electrical paperboard can be stacked on the conveyor belt (11); a baffle (7) is provided between the numerical control automatic feeding mechanism (1) and the numerical control pressing feeding mechanism (2); a gap between the bottom of the baffle (7) and the top of the conveyor belt (11) is greater than the thickness of one layer of the electrical paperboard and less than the thickness of two layers of the electrical paperboard.

6. The transformer oil curtain stay CNC forming machine according to claim 1 or 2, characterized in that: The numerically controlled pressing and feeding mechanism (2) and the numerically controlled pressing and receiving mechanism (4) both comprise a plurality of groups of rubber roller assemblies (8) arranged at intervals along the conveying direction of the electrical paperboard, and each group of the rubber roller assemblies (8) comprises two rubber rollers arranged one above the other and allowing the electrical paperboard to pass through a gap therebetween.

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