Transformer iron core stamping die

Abstract

The utility model discloses a transformer iron core stamping die, and belongs to the technical field of stamping dies. The transformer iron core stamping die comprises a lower die and an upper die, a stamping cavity and a stamping head are arranged in the lower die and the upper die respectively, and the transformer iron core stamping die further comprises a demolding liquid cavity arranged in the lower die and filled with demolding liquid; the plurality of groups of atomizing nozzles are arranged in the stamping cavity; the piston cylinder is connected into the lower die, the telescopic end of the piston cylinder penetrates through the lower die, and the telescopic end can be extruded by the upper die and then contracted into the piston cylinder; the liquid inlet pipe is connected to the piston cylinder, and the other end of the liquid inlet pipe is located in the demolding liquid cavity; through the arrangement of the piston cylinder, in the using process, demolding liquid can be continuously sprayed out, then the demolding liquid is sprayed out through the atomization spray head, the side portion of an iron core to be stamped is sprayed, the iron core is prevented from being attached to the interior of the stamping cavity of the lower die, manual spraying is not needed, and using is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a transformer core stamping die. Background Art

[0002] The iron core of the transformer is the main magnetic circuit part of the transformer. It is usually made of hot-rolled or cold-rolled silicon steel sheets with a high silicon content and coated with insulating paint. The iron core and the coil wound on it form a complete electromagnetic induction system. The power transmitted by the power transformer depends on the material and cross-sectional area of ​​the iron core.

[0003] Transformers come in a variety of shapes, but most of them are C and D. When producing C-shaped transformers, stamping is usually used to continuously stamp the initially straight transformer core until it becomes a C shape. However, during this process, the core is prone to adhere to the inside of the mold, especially on the sides and bends, requiring workers to continuously apply demolding liquid. This process affects work efficiency and has certain shortcomings.

[0004] Therefore, a transformer core stamping die is provided to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to solve the problems raised in the above background technology and provides a transformer core stamping die.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The transformer core stamping die comprises a lower die and an upper die, wherein a stamping cavity and a stamping head are respectively arranged in the lower die and the upper die, and further comprises:

[0008] A demoulding liquid cavity is arranged in the lower mold, and the demoulding liquid cavity is filled with a demoulding liquid;

[0009] A plurality of groups of atomizing nozzles are arranged in the stamping cavity;

[0010] A piston cylinder is connected in the lower die, and the telescopic end of the piston cylinder penetrates the lower die, and the telescopic end can be squeezed by the upper die and then retracted into the piston cylinder;

[0011] A liquid inlet pipe, connected to the piston cylinder, the other end of which is located in the demoulding liquid cavity;

[0012] A liquid outlet pipe is connected to the piston cylinder, a liquid outlet end of the liquid outlet pipe is connected to the atomizing nozzle, and a one-way valve is arranged in the liquid inlet pipe and the liquid outlet pipe.

[0013] In order to facilitate spraying, preferably, the multiple groups of atomizing nozzles are divided into two layers, upper and lower layers, and are evenly spaced and located in the stamping cavity.

[0014] In order to facilitate the liquid to be led out to the outside, preferably, the liquid outlet pipe is connected with a secondary pipe, a short pipe is vertically installed on the lower mold, the secondary pipe is connected to the short pipe, and the connecting end is located in the middle of the short pipe.

[0015] In order to avoid liquid leakage, preferably, a blocking block is slidably connected in the short tube, a spring member is connected in the short tube, and the blocking block is connected to the spring member.

[0016] In order to facilitate the discharge of the liquid, preferably, an extrusion block is fixedly connected to the upper mold, the extrusion block can push the movement of the blocking block, and an inner tube is connected to the extrusion block.

[0017] In order to facilitate spraying inside the iron core, preferably, a group of atomizing nozzles are connected to the central area of ​​the punch head, and the inner tube is connected to the group of atomizing nozzles.

[0018] Compared with the prior art, the utility model provides a transformer core stamping die, which has the following beneficial effects:

[0019] The utility model can continuously spray out demoulding liquid through the arrangement of the piston cylinder when in use, and then spray out through the atomizing nozzle to spray the side of the iron core to be stamped, so as to prevent the iron core from being attached to the stamping cavity of the lower die, and no manual spraying is required, which is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The structure diagram of the transformer core stamping die proposed by the utility model Figure 1 ;

[0021] Figure 2 The structure diagram of the transformer core stamping die proposed by the utility model Figure 2 ;

[0022] Figure 3 The transformer core stamping die proposed by the utility model Figure 2 Schematic diagram of the structure of part A;

[0023] Figure 4 The transformer core stamping die proposed by the utility model Figure 2 Schematic diagram of the structure of part B.

[0024] In the figure: 101, lower die; 1011, punching cavity; 102, upper die; 1021, punching head; 1022, extrusion block; 1023, inner tube; 103, demoulding liquid cavity; 201, piston cylinder; 202, liquid inlet pipe; 203, liquid outlet pipe; 2031, atomizing nozzle; 204, auxiliary pipe; 205, short pipe; 206, spring member; 207, blocking block. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Embodiment 1:

[0027] Reference Figure 1-4 The transformer core stamping die comprises a lower die 101 and an upper die 102, wherein the lower die 101 and the upper die 102 are respectively provided with a stamping cavity 1011 and a stamping head 1021, and further comprises: a demoulding liquid cavity 103, which is arranged in the lower die 101 and is filled with a demoulding liquid; a plurality of atomizing nozzles 2031, which are all arranged in the stamping cavity 1011; a piston cylinder 201, which is connected in the lower die 101, and the telescopic end of the piston cylinder 201 penetrates the lower die 101, and the telescopic end It can be squeezed by the upper mold 102 and then retracted into the piston cylinder 201; the liquid inlet pipe 202 is connected to the piston cylinder 201, and the other end of the liquid inlet pipe 202 is located in the demoulding liquid cavity 103; the liquid outlet pipe 203 is connected to the piston cylinder 201, and the liquid outlet end of the liquid outlet pipe 203 is connected to the atomizing nozzle 2031, and a one-way valve is provided in the liquid inlet pipe 202 and the liquid outlet pipe 203, and multiple groups of atomizing nozzles 2031 are divided into two layers, upper and lower, and are evenly spaced in the stamping cavity 1011.

[0028] When the device is in use, it is first installed on the stamping machine, and the demoulding liquid cavity 103 is filled with demoulding liquid, and then the stamping machine is started and repeatedly moved up and down several times. At this time, the telescopic end of the piston cylinder 201 is squeezed, and the inner piston cylinder 201 is contracted, and then the demoulding liquid in the demoulding liquid cavity 103 is sucked in and sprayed out through the atomizing nozzle 2031. Then, the iron core to be stamped can be placed in the stamping cavity 1011 and the stamping machine is started. At this time, the upper mold 102 is constantly close to the telescopic end of the piston cylinder 201, and then the atomizing nozzle 2031 sprays the demoulding liquid again. As shown in the figure, these demoulding liquids will be sprayed on the side and bottom bending of the iron core, which can effectively avoid the adhesion of the bending part of the iron core to the lower mold 101. After the stamping is completed, the iron core after the impact can be conveniently taken out by tools.

[0029] Embodiment 2:

[0030] Reference Figure 1-4, the transformer core stamping die is basically the same as that in Example 1, and further: the liquid outlet pipe 203 is connected with a sub-tube 204, the lower die 101 is vertically installed with a short tube 205, the sub-tube 204 is connected to the short tube 205, and the connecting end is located in the middle of the short tube 205, a blocking block 207 is slidably connected in the short tube 205, a spring member 206 is connected in the short tube 205, the blocking block 207 is connected to the spring member 206, an extrusion block 1022 is fixedly connected to the upper die 102, the extrusion block 1022 can push the movement of the blocking block 207, the extrusion block 1022 is connected with an inner tube 1023, and a group of atomizing nozzles 2031 are connected to the central area of ​​the punching head 1021, and the inner tube 1023 is connected to the group of atomizing nozzles 2031.

[0031] Under normal circumstances, the blocking block 207 will block the liquid outlet end of the short tube 205 to prevent the internal demoulding liquid from being discharged. During stamping, the upper mold 102 will first contact the telescopic end of the piston cylinder 201, thereby causing the piston cylinder 201 to discharge the demoulding liquid, which will be sprayed out through the atomizing nozzle 2031 of the lower mold 101. At the same time, as the upper mold 102 continues to approach the lower mold 101, the extrusion block 1022 will extend into the short tube 205, thereby squeezing the blocking block 207 to move the blocking block 207, and the stamping The force generated by the pressure is obviously greater than the pressure inside the short tube 205. At this time, the block 207 will move smoothly until the block 207 is lower than the auxiliary tube 204. At this time, the liquid in the auxiliary tube 204 will enter the atomizing nozzle 2031 above through the inner tube 1023 and be sprayed out therefrom. At this time, the punch head 1021 of the upper mold 102 is about to contact the iron core, and the demolding liquid is sprayed out at this time to prevent the iron core from sticking to the upper mold 102, until the upper mold 102 and the lower mold 101 are finally fitted together, and the piston cylinder 201 no longer sprays the demolding liquid.

[0032] During use, there may be residual demoulding liquid at the position of the short tube 205, which needs to be cleaned regularly to avoid dirt and affect use.

[0033] The utility model can continuously spray out demoulding liquid through the arrangement of the piston cylinder 201 when in use, and then spray out through the atomizing nozzle 2031 to spray the side of the iron core to be stamped, so as to prevent the iron core from being attached to the stamping cavity 1011 of the lower mold 101, without manual spraying, and is easy to use.

[0034] The above 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 substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A transformer core stamping die, comprising a lower die (101) and an upper die (102), wherein the lower die (101) and the upper die (102) are respectively provided with a stamping cavity (1011) and a stamping head (1021), characterized in that: Also includes: A demoulding liquid cavity (103) is arranged in the lower mold (101), and a demoulding liquid is contained in the demoulding liquid cavity (103); A plurality of groups of atomizing nozzles (2031) are all arranged in the stamping cavity (1011); A piston cylinder (201) is connected inside the lower die (101), and the telescopic end of the piston cylinder (201) penetrates the lower die (101), and the telescopic end can be squeezed by the upper die (102) and then retracted into the piston cylinder (201); A liquid inlet pipe (202) connected to the piston cylinder (201), the other end of the liquid inlet pipe (202) being located in the demoulding liquid cavity (103); The liquid outlet pipe (203) is connected to the piston cylinder (201), the liquid outlet end of the liquid outlet pipe (203) is connected to the atomizing nozzle (2031), and one-way valves are provided in the liquid inlet pipe (202) and the liquid outlet pipe (203).

2. The transformer core stamping die according to claim 1, characterized in that: The multiple groups of atomizing nozzles (2031) are divided into two layers, upper and lower, and are evenly spaced and located in the stamping cavity (1011).

3. The transformer core stamping die according to claim 1, characterized in that: The liquid outlet pipe (203) is connected to a secondary pipe (204), a short pipe (205) is vertically installed on the lower mold (101), the secondary pipe (204) is connected to the short pipe (205), and the connection end is located in the middle of the short pipe (205).

4. The transformer core stamping die according to claim 3, characterized in that: A blocking block (207) is slidably connected inside the short tube (205), a spring component (206) is connected inside the short tube (205), and the blocking block (207) is connected to the spring component (206).

5. The transformer core stamping die according to claim 4, characterized in that: An extrusion block (1022) is fixedly connected to the upper mold (102), and the extrusion block (1022) can push the block (207) to move. An inner tube (1023) is connected inside the extrusion block (1022).

6. The transformer core stamping die according to claim 5, characterized in that: A group of atomizing nozzles (2031) is connected to the central area of ​​the punch head (1021), and the inner tube (1023) is in communication with the group of atomizing nozzles (2031).

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