Anti-leakage dry-type transformer pouring mold

Abstract

The invention provides an anti-leakage dry-type transformer pouring mold, and relates to the technical field of transformer shell pouring molds, the anti-leakage dry-type transformer pouring mold comprises a mold body and a demolding mechanism, and the demolding mechanism is arranged below the mold body. In the using process, the outer mold shell and the inner shell are arranged, the inner shell is located at the axis of the outer mold shell, the movable bottom plate capable of sliding is arranged between the outer mold shell and the inner shell to form the pouring cavity with the sealed bottom, leakage is avoided, and due to the fact that the outer mold shell and the inner shell are both integrated, splicing seams cannot be generated after pouring; and during pouring, complicated fixing is not needed, and the effects of being easy to operate and eliminating splicing seams of the transformer shell are achieved. And meanwhile, after pouring of the transformer shell is completed, the movable bottom plate is driven by the telescopic rod to eject upwards, and therefore the poured transformer shell can be demolded conveniently and rapidly.

Description

Technical Field

[0001] The invention relates to the technical field of transformer shell casting moulds, in particular to a leakage-proof dry-type transformer casting mould. Background Art

[0002] Dry-type transformers are transformers whose core and windings are not immersed in insulating oil. Dry-type transformers are widely used in local lighting, high-rise buildings, airports, docks, CNC machinery and other places.

[0003] The existing dry-type transformer shell is generally cast with insulating epoxy resin. In order to improve the convenience of casting and demoulding, the mold is generally designed as a split type. After casting, the shell of the dry-type transformer can be easily removed by separating the mold. However, the split design will have obvious seams, which are prone to penetration and obvious seams. If the casting mold is one-piece, the product is easy to adhere to the inside of the mold after casting, making it difficult to demold the product from the mold.

[0004] In the prior art, there is a transformer casting mold with improved sealing and easy demoulding. This device is a detachable mold and is controlled by a hydraulic device. It is easy to operate and relatively simple to demold. At the same time, a sealing gasket is arranged between the molds to ensure sufficient sealing between the molds and prevent possible leakage of epoxy resin.

[0005] However, the above prior art requires a lot of fixing actions during casting, which makes the operation troublesome. At the same time, because the above prior art sets a sealing pad to seal the mold parting point, the transformer shell has obvious seams after casting.

[0006] To this end, the present application proposes a leakage-proof dry-type transformer casting mold to improve the convenience of casting and eliminate the obvious seam lines on the transformer casing. Summary of the invention

[0007] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a leakage-proof dry-type transformer casting mold to solve the problems of inconvenience in use and the presence of joints in the prior art.

[0008] To achieve the above-mentioned purpose and other related purposes, the present invention provides a leakage-proof dry-type transformer casting mold, comprising a mold body and a demoulding mechanism, wherein the demoulding mechanism is arranged below the mold body;

[0009] The mold body comprises an outer mold shell, an inner shell, a movable bottom plate and a support frame, the inner shell is sleeved inside the outer mold shell, the outer mold shell and the inner shell are of equal height, a casting cavity is formed between the outer mold shell and the inner shell, the movable bottom plate is arranged inside the casting cavity, and the movable bottom plate is used to seal the inner bottom of the casting cavity;

[0010] The demoulding mechanism includes a support base and a telescopic rod, wherein the telescopic rod is arranged on the support base, and the upper end of the telescopic rod is fixedly connected to the bottom surface of the movable bottom plate, and a control device capable of controlling the telescopic rod to extend and retract is arranged inside the support base, and the telescopic rod capable of extending and retracting is used to drive the movable bottom plate to slide up and down inside the casting cavity;

[0011] The support frame is used for supporting and connecting the outer mold shell and the support base, so that the position between the outer mold shell and the support base is kept stable.

[0012] Preferably, the outer surface of the outer mold shell is provided with a depth scale, and the bottom surface of the movable bottom plate is provided with an indicator rod, and the indicator rod extends to the outer surface of the outer mold shell;

[0013] The upper end of the indicating rod is provided with an indicating component, which points to the depth scale to indicate the height of the top of the movable bottom plate;

[0014] The support base is provided with an avoidance groove matched with the position of the indicator pole.

[0015] Preferably, the inner wall of the outer mold shell is provided with a heat dissipation fin casting groove which passes through the upper and lower ends of the inner wall of the outer mold shell, and the outer surface of the movable bottom plate is provided with a connecting groove, the connecting groove and the heat dissipation fin casting groove are meshed with each other, and the meshing parts of the heat dissipation fin casting groove and the connecting groove are fitted and sealed with each other.

[0016] Preferably, the anti-leakage dry-type transformer casting mold further includes a casting auxiliary heating mechanism, and the casting auxiliary heating mechanism includes a heating chamber arranged inside the internal shell;

[0017] The inner bottom surface of the heating chamber is provided with a heating device, the wire of the heating device is introduced into the interior of the support base, and a frequency converter is provided inside the support base, and the frequency converter is used to control the power used by the heating device;

[0018] The bottom of the heating chamber is provided with a ventilation hole which penetrates the bottom of the internal shell.

[0019] Preferably, the heating device is a spiral heating tube, and the outer surface of the heating device is in contact with the inner wall of the heating chamber.

[0020] Preferably, a corrugated hose is provided at the bottom of the internal shell, and two ends of the corrugated hose are respectively connected to the bottom of the internal shell and the top of the support base, and the wire of the heating device passes through the inside of the corrugated hose and enters into the inside of the support base.

[0021] Preferably, a slide bar is provided on the top of the support frame, and a limit block is provided on the upper outer surface of the slide bar;

[0022] A finished product trimming mechanism is arranged on the slide bar, and the limit block supports the finished product trimming mechanism.

[0023] Preferably, the finished product trimming mechanism comprises a counterweight plate, a transmission motor and a trimming structure, and the edge of the counterweight plate is provided with a limiting hole adapted to the slide rod;

[0024] The transmission motor is arranged on the top of the counterweight plate, the trimming structure is arranged on the bottom of the counterweight plate, and the bottom of the trimming structure overlaps with the top of the outer mold shell, and the transmission motor is used to drive the trimming structure to rotate.

[0025] Preferably, the trimming structure includes a rotating shaft, a connecting ring and a bevel blade, the rotating shaft is located at the axis center of the connecting ring, and the rotating shaft is connected to the transmission shaft of the transmission motor, the bevel blade is fixed between the rotating shaft and the connecting ring, and the bottom of the bevel blade overlaps the top of the outer mold shell.

[0026] Preferably, there are a plurality of bevel blades, and the plurality of bevel blades are all arranged at an angle, with a gap being left between two adjacent bevel blades.

[0027] As described above, the anti-leakage dry-type transformer casting mold of the present invention has the following beneficial effects:

[0028] 1. The present invention arranges an outer mold shell and an inner shell, places the inner shell at the axis of the outer mold shell, and arranges a slidable movable bottom plate between the outer mold shell and the inner shell to form a bottom-sealed casting cavity to avoid leakage. Because the outer mold shell and the inner shell are both integral, no joint seams will be generated after casting, and no complicated fixation is required during casting, thereby achieving the effect of simple operation and eliminating the joint seams of the transformer shell.

[0029] At the same time, after the transformer shell is cast, the movable bottom plate is driven upward by the telescopic rod, so that the transformer shell after casting can be demoulded conveniently.

[0030] 2. The present invention drives the movable bottom plate to slide up and down by a telescopic rod. In addition to improving the convenience of demoulding, the position of the movable bottom plate inside the casting cavity can be adjusted according to production needs to produce transformer casings of different heights.

[0031] 3. The present invention sets a heating chamber inside the internal shell, and heats the material through a heating device inside the heating chamber, so that the heat generated by the heating is conducted to the casting material through the internal shell, so as to reduce the cooling rate of the material and make the material cool down evenly, so as to avoid the formation of bubbles inside the cast product due to uneven cooling rate of the material.

[0032] 4. The present invention supports the counterweight plate by arranging a limit block on the support frame, and arranges a transmission motor on the counterweight plate to drive the trimming structure to rotate, so that during the pouring process of the product, the vibration generated by the transmission motor can make the material more compact. At the same time, the trimming structure can trim the excess corners on the top of the product, thereby achieving the effect of improving the product quality.

[0033] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Shown is a schematic structural diagram of the present invention.

[0035] Figure 2 Shown is a schematic assembly diagram of the finished trimming mechanism of the present invention.

[0036] Figure 3 It shows a schematic diagram of the connection between the mold body and the demoulding mechanism of the present invention.

[0037] Figure 4 Shown is a structural cross-sectional view of the outer mold shell of the present invention.

[0038] Figure 5 It is a schematic diagram showing the connection between the movable bottom plate and the telescopic rod of the present invention.

[0039] Figure 6 Shown as the present invention Figure 5 A schematic diagram of the enlarged structure at point A in the middle.

[0040] Figure 7 Shown is a structural cross-sectional view of the inner shell of the present invention.

[0041] Figure 8 Shown is a schematic structural diagram of the finished trimming mechanism of the present invention.

[0042] Component number description

[0043] 1. Mold body; 101. Outer mold shell; 102. Inner shell; 103. Movable bottom plate; 104. Support frame; 105. Cooling fin casting groove; 106. Connecting groove; 107. Depth scale; 108. Indicator rod; 109. Limit block; 2. Demolding mechanism; 201. Support base; 202. Telescopic rod; 203. Avoidance groove; 3. Casting auxiliary heating mechanism; 301. Heating chamber; 302. Heating device; 303. Ventilation hole; 304. Corrugated hose; 4. Finished product trimming mechanism; 401. Counterweight plate; 402. Limit hole; 403. Transmission motor; 404. Trimming structure; 4041. Rotating shaft; 4042. Connecting ring; 4043. Bevel blade. DETAILED DESCRIPTION

[0044] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0045] See also Figures 1 to 8 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0046] like Figure 1-Figure 8 As shown, the present invention provides a leakage-proof dry-type transformer casting mold, which includes a mold body 1 and a demoulding mechanism 2 , and the demoulding mechanism 2 is arranged below the mold body 1 .

[0047] The mold body 1 includes an outer mold shell 101, an inner shell 102, a movable bottom plate 103 and a support frame 104. The inner shell 102 is sleeved inside the outer mold shell 101, and a casting cavity is formed between the outer mold shell 101 and the inner shell 102. The material for casting the dry-type transformer is filled inside the casting cavity, and the outer shell of the dry-type transformer is formed by solidification. The outer mold shell 101 and the inner shell 102 are integrally cast, and the bottom of the outer mold shell 101 and the bottom of the inner shell 102 are connected by ribs to avoid leakage and the formation of joints when the product is formed. The height of the outer mold shell 101 and the inner shell 102 is equal to ensure that the raw material will not leak due to the height difference between the outer mold shell 101 and the inner shell 102. The movable bottom plate 103 is arranged inside the casting cavity, and the movable bottom plate 103 is used to seal the inner bottom of the casting cavity and to support the bottom of the material to avoid leakage of the raw material from the bottom.

[0048] The demoulding mechanism 2 includes a support base 201 and a telescopic rod 202, and the telescopic rod 202 is arranged on the support base 201. The upper end of the telescopic rod 202 is fixedly connected to the bottom surface of the movable bottom plate 103, and a control device that can control the telescopic rod 202 to be extended and retracted is arranged inside the support base 201. The telescopic rod 202 that can be extended and retracted is used to drive the movable bottom plate 103 to slide up and down inside the casting cavity, and the movable bottom plate 103 is pushed to slide upward by the telescopic rod 202, so that the molded product can rise accordingly, thereby improving the convenience of demoulding. At the same time, by adjusting the height of the movable bottom plate 103 inside the casting cavity through the telescopic rod 202, it is also possible to produce products of different heights.

[0049] The support frame 104 is used to support and connect the outer mold shell 101 and the support base 201, so that the position between the outer mold shell 101 and the support base 201 remains stable, thereby integrating the entire device and allowing the outer mold shell 101 to be suspended in the air, leaving space for the telescopic rod 202 to retract.

[0050] In some embodiments, the outer surface of the outer mold shell 101 of the present invention is provided with a depth scale 107, which is a scale with equal spacing and scale. The bottom surface of the movable bottom plate 103 is provided with an indicator rod 108, which extends to the outer surface of the outer mold shell 101, so that when the movable bottom plate 103 moves up and down, the indicator rod 108 will move up and down with the movable bottom plate 103.

[0051] The upper end of the indicator rod 108 is provided with an indicating component, which points to the depth scale 107 to indicate the height of the top of the movable bottom plate 103. Therefore, after the movable bottom plate 103 moves, the height indicated by the indicating component is the height of the movable bottom plate 103 inside the casting cavity, which is convenient for users to judge and improves the accuracy of product casting.

[0052] The support base 201 is provided with an avoidance groove 203 adapted to the position of the indicator rod 108, so that when the movable base plate 103 descends, the bottom of the indicator rod 108 will be inserted into the avoidance groove 203 to avoid movement interference and limit the descending space of the movable base plate 103.

[0053] In some embodiments, the inner wall of the outer mold shell 101 of the present invention is provided with a heat sink fin casting groove 105 that runs through the upper and lower ends of the inner wall of the outer mold shell 101. The purpose of providing the heat sink fin casting groove 105 is to provide the surface of the transformer shell with heat sink fins when casting the transformer shell. Because the heat sink fin casting groove 105 is provided on the inner wall of the outer mold shell 101, a gap is generated. Therefore, a connecting groove 106 needs to be provided on the outer surface of the movable bottom plate 103. The connecting groove 106 and the heat sink fin casting groove 105 are meshed with each other, and the meshing part of the heat sink fin casting groove 105 and the connecting groove 106 are mutually sealed, thereby preventing the casting material from leaking from the gap between the heat sink fin casting groove 105 and the movable bottom plate 103.

[0054] In some embodiments, the present invention also includes a pouring auxiliary heating mechanism 3, which includes a heating chamber 301 arranged inside the internal shell 102. A heating device 302 is provided on the inner bottom surface of the heating chamber 301, and the wires of the heating device 302 are introduced into the interior of the support base 201. A frequency converter is provided inside the support base 201, and the frequency converter is used to control the power used by the heating device 302. When the transformer casing is poured, the raw material injected first will solidify first, resulting in uneven solidification of the material. At this time, the heating device 302 is provided to heat the outer surface of the internal shell 102 to slow down the solidification speed of the injected material and keep the material fluid. When the material is completely poured, the heat generated by the heating device 302 is gradually reduced by the frequency converter to make the material cool down evenly and slowly. Reduce or avoid the generation of bubbles and casting voids during the casting of the transformer.

[0055] The bottom of the heating chamber 301 is provided with a ventilation hole 303 that penetrates the bottom of the internal shell 102 for air exchange, so as to avoid the heating device 302 heating the air in a sealed state and causing the air to expand and explode, and after the heating device 302 stops working, the heating device 302 increases the cooling speed by exchanging with the air.

[0056] Specifically, the heating device 302 of the present invention is a spiral heating tube, thereby increasing the heating area of ​​the heating device 302 and improving the heating efficiency of the heating device 302. The outer surface of the heating device 302 is in contact with the inner wall of the heating chamber 301. When the heating device 302 is heated, the heat is conducted through the interior of the heating chamber 301 to the outer surface of the internal shell 102, thereby heating and insulating the filling material in the casting cavity to prevent the filling material from cooling down quickly.

[0057] In some embodiments, a corrugated hose 304 is provided at the bottom of the inner shell 102 of the present invention to protect the connection line of the heating device 302. The two ends of the corrugated hose 304 are respectively connected to the bottom of the inner shell 102 and the top of the support base 201, and the wires of the heating device 302 pass through the inside of the corrugated hose 304 and enter the inside of the support base 201. The control devices of the telescopic rod 202 and the control devices of the heating device 302 are integrated inside the support base 201 to facilitate control.

[0058] In some embodiments, a slide bar is provided on the top of the support frame 104 of the present invention, and a limit block 109 is provided on the upper outer surface of the slide bar. A finished product trimming mechanism 4 is provided on the slide bar, and the limit block 109 supports the finished product trimming mechanism 4, so that the finished product trimming mechanism 4 is located above the outer mold shell 101, and when the product is poured, the burrs on the top of the product can be repaired.

[0059] Specifically, the finished product trimming mechanism 4 of the present invention includes a counterweight plate 401, a transmission motor 403 and a trimming structure 404. The edge of the counterweight plate 401 is provided with a limiting hole 402 adapted to the slide bar. The counterweight plate 401 is limited by providing the limiting hole 402 on the counterweight plate 401 to cooperate with the slide bar to limit the counterweight plate 401, so that the counterweight plate 401 can be easily disassembled and assembled.

[0060] The transmission motor 403 is arranged on the top of the counterweight plate 401, and the trimming structure 404 is arranged on the bottom of the counterweight plate 401, and the bottom of the trimming structure 404 overlaps with the top of the outer mold shell 101, and the transmission motor 403 is used to drive the trimming structure 404 to rotate. When the transmission motor 403 drives the trimming structure 404 to work, the centrifugal force and torque work will cause the transmission motor 403 to vibrate, and then drive the entire device to vibrate slightly, so that the material in the casting cavity is more compact, which can further reduce the generation of bubbles and cavities. At the same time, the rotating trimming structure 404 will trim the material above the top of the outer mold shell 101 to improve the quality of the product.

[0061] When the product is poured, the movable bottom plate 103 lifts the product upward for demoulding. When the top of the product contacts the bottom of the trimming structure 404, the trimming structure 404 is slightly lifted to avoid damage to the product body. At the same time, the protruding part of the top of the product is trimmed by the trimming structure 404.

[0062] In some embodiments, the trimming structure 404 of the present invention includes a rotating shaft 4041, a connecting ring 4042 and a bevel blade 4043. The rotating shaft 4041 is located at the axis of the connecting ring 4042, and the rotating shaft 4041 is connected to the transmission shaft of the transmission motor 403, so as to ensure that the rotating shaft 4041 and the connecting ring 4042 can rotate coaxially when the transmission motor 403 is driving. The bevel blade 4043 is fixed between the rotating shaft 4041 and the connecting ring 4042, and is used to connect the rotating shaft 4041 and the connecting ring 4042 together. The bottom of the bevel blade 4043 has a blade edge, and a cutting force is generated by rotation. The bottom of the bevel blade 4043 overlaps with the top of the outer mold shell 101, so as to cut the material protruding from the top of the outer mold shell 101, so as to ensure that the top of the product remains smooth.

[0063] Specifically, the present invention has a plurality of bevel blades 4043, and the plurality of bevel blades 4043 are all arranged at an angle to ensure the cutting ability of the bevel blades 4043. A gap is left between two adjacent bevel blades 4043, so that the protruding material can be cut in the gap, and at the same time, the cut debris will be thrown out of the gap under the centrifugal force generated by the rotation of the bevel blades 4043.

[0064] The specific use process of the present invention is as follows:

[0065] The height of the movable bottom plate 103 inside the casting cavity is adjusted by the telescopic rod 202, and the position of the movable bottom plate 103 is determined by the cooperation of the depth scale 107 and the indicator rod 108;

[0066] Fill the casting cavity with the material required for casting the transformer shell, and start the heating device 302 to heat the inner shell 102 to delay the solidification time of the casting material;

[0067] After the material is filled, the weight plate 401 is added, and the transmission motor 403 is started and the heating device 302 is turned off, so that the whole device shakes slightly and the casting material is gradually cooled and formed;

[0068] After the pouring material is completely cooled, the telescopic rod 202 is started to lift the finished product, and the top of the finished product is trimmed by the trimming structure 404;

[0069] Finally, the counterweight plate 401 is disassembled, and the product body is pushed out of the casting cavity by the cooperation of the telescopic rod 202 and the movable bottom plate 103 to complete demoulding.

[0070] In summary, the anti-leakage dry-type transformer casting mold of the present invention is provided with an outer mold shell 101 and an inner shell 102, and the inner shell 102 is located at the axis of the outer mold shell 101, and a slidable movable bottom plate 103 is provided between the outer mold shell 101 and the inner shell 102 to form a bottom-sealed casting cavity to avoid leakage. Because the outer mold shell 101 and the inner shell 102 are both integral, no joint seams will be generated after casting, and no complicated fixation is required during casting, thereby achieving the effect of simple operation and eliminating the joint seams of the transformer shell.

[0071] At the same time, after the transformer shell is cast, the present invention drives the movable bottom plate 103 upward through the telescopic rod 202, so that the transformer shell after casting can be demoulded conveniently.

[0072] The present invention drives the movable bottom plate 103 to slide up and down by using the telescopic rod 202. In addition to improving the convenience of demoulding, the position of the movable bottom plate 103 inside the casting cavity can be adjusted according to production requirements to produce transformer casings of different heights.

[0073] The present invention sets a heating chamber 301 inside the internal shell 102, and heats the heating chamber 301 through the heating device 302 inside the heating chamber 301, so that the heat generated by the heating is transferred to the casting material through the internal shell 102, so as to reduce the cooling rate of the material and make the material cool down evenly, so as to avoid the formation of bubbles inside the cast product due to uneven cooling rate of the material.

[0074] The present invention supports the counterweight plate 401 by arranging a limit block 109 on the support frame 104, and arranges a transmission motor 403 on the counterweight plate 401 to drive the trimming structure 404 to rotate, so that during the pouring process of the product, the vibration generated by the transmission motor 403 can make the material more compact. At the same time, the trimming structure 404 can trim the excess corners on the top of the product, thereby achieving the effect of improving the product quality.

[0075] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0076] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A leak-proof dry-type transformer casting mold, characterized in that: It comprises a mold body (1) and a demoulding mechanism (2), wherein the demoulding mechanism (2) is arranged below the mold body (1); The mold body (1) comprises an outer mold shell (101), an inner shell (102), a movable bottom plate (103) and a support frame (104); the inner shell (102) is sleeved inside the outer mold shell (101); the outer mold shell (101) and the inner shell (102) are of equal height; a casting cavity is formed between the outer mold shell (101) and the inner shell (102); the movable bottom plate (103) is arranged inside the casting cavity; and the movable bottom plate (103) is used to seal the inner bottom of the casting cavity; The demoulding mechanism (2) comprises a support base (201) and a telescopic rod (202), wherein the telescopic rod (202) is arranged on the support base (201), and the upper end of the telescopic rod (202) is fixedly connected to the bottom surface of the movable bottom plate (103), and a control device capable of controlling the telescopic rod (202) to be extended or retracted is arranged inside the support base (201), and the telescopic rod (202) that can be extended or retracted is used to drive the movable bottom plate (103) to slide up and down inside the casting cavity; The support frame (104) is used to support and connect the outer mold shell (101) and the support base (201), so that the position between the outer mold shell (101) and the support base (201) is kept stable.

2. The anti-leakage dry-type transformer casting mold according to claim 1 is characterized in that: The outer surface of the outer mold shell (101) is provided with a depth scale (107), and the bottom surface of the movable bottom plate (103) is provided with an indicator rod (108), and the indicator rod (108) extends to the outer surface of the outer mold shell (101); The upper end of the indicating rod (108) is provided with an indicating component, which points to the depth scale (107) and is used to indicate the height of the top of the movable bottom plate (103); The support base (201) is provided with an avoidance groove (203) adapted to the position of the indicator pole (108).

3. The anti-leakage dry-type transformer casting mold according to claim 1 is characterized in that: The inner wall of the outer mold shell (101) is provided with a heat dissipation fin casting groove (105) which runs through the upper and lower ends of the inner wall of the outer mold shell (101); the outer surface of the movable bottom plate (103) is provided with a connecting groove (106); the connecting groove (106) and the heat dissipation fin casting groove (105) are meshed with each other, and the meshing parts of the heat dissipation fin casting groove (105) and the connecting groove (106) are mutually fitted and sealed.

4. The anti-leakage dry-type transformer casting mold according to claim 1 is characterized in that: It also includes a pouring auxiliary heating mechanism (3), wherein the pouring auxiliary heating mechanism (3) includes a heating chamber (301) arranged inside the internal shell (102); The inner bottom surface of the heating chamber (301) is provided with a heating device (302), the wires of the heating device (302) are introduced into the interior of the support base (201), and a frequency converter is provided inside the support base (201), and the frequency converter is used to control the power used by the heating device (302); The bottom of the heating chamber (301) is provided with a ventilation hole (303) that passes through the bottom of the internal shell (102).

5. The anti-leakage dry-type transformer casting mold according to claim 4 is characterized in that: The heating device (302) is a spiral heating tube, and the outer surface of the heating device (302) is in contact with the inner wall of the heating chamber (301).

6. The anti-leakage dry-type transformer casting mold according to claim 4 is characterized in that: A corrugated hose (304) is provided at the bottom of the inner shell (102), and two ends of the corrugated hose (304) are respectively connected to the bottom of the inner shell (102) and the top of the support base (201), and the wire of the heating device (302) passes through the inside of the corrugated hose (304) and enters the inside of the support base (201).

7. The anti-leakage dry-type transformer casting mold according to claim 1 is characterized in that: A slide bar is arranged on the top of the support frame (104), and a limit block (109) is arranged on the upper outer surface of the slide bar; A finished product trimming mechanism (4) is arranged on the sliding rod, and the limit block (109) supports the finished product trimming mechanism (4).

8. The anti-leakage dry-type transformer casting mold according to claim 7, characterized in that: The finished product trimming mechanism (4) comprises a counterweight plate (401), a transmission motor (403) and a trimming structure (404); the edge of the counterweight plate (401) is provided with a limiting hole (402) adapted to the slide rod; The transmission motor (403) is arranged on the top of the counterweight plate (401), and the trimming structure (404) is arranged on the bottom of the counterweight plate (401), and the bottom of the trimming structure (404) overlaps with the top of the outer mold shell (101), and the transmission motor (403) is used to drive the trimming structure (404) to rotate.

9. The anti-leakage dry-type transformer casting mold according to claim 8, characterized in that: The trimming structure (404) comprises a rotating shaft (4041), a connecting ring (4042) and a bevel blade (4043); the rotating shaft (4041) is located at the axis of the connecting ring (4042), and the rotating shaft (4041) is connected to the transmission shaft of the transmission motor (403); the bevel blade (4043) is fixed between the rotating shaft (4041) and the connecting ring (4042), and the bottom of the bevel blade (4043) overlaps the top of the outer mold shell (101).

10. The anti-leakage dry-type transformer casting mold according to claim 9, characterized in that: There are a plurality of bevel blades (4043), and the plurality of bevel blades (4043) are all arranged at an angle, with a gap being left between two adjacent bevel blades (4043).

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