Mutual inductor die for Rogowski coil puncturing sliding block

Abstract

The utility model belongs to the field of injection molds, and particularly relates to a mold for a Rogowski coil puncturing sliding block mutual inductor, which comprises a concave mold assembly and a convex mold assembly which are in guide connection, and an ejection assembly and a transverse movement forming assembly which are arranged on the convex mold assembly, the transverse moving forming assembly comprises telescopic cylinders installed on the left side and the right side of the male die assembly, a first transverse moving block and a second transverse moving block, the first transverse moving block and the second transverse moving block are connected with the telescopic cylinders on the two sides respectively, the forming face of the first transverse moving block is matched with the outer arc face of the arc-shaped section of the mutual inductor shell, and a first protrusion is arranged on the first transverse moving block. A second protrusion and a sleeve rod arranged at the front end of the second protrusion are arranged on the second transverse moving block, the sleeve is arranged on the sleeve rod in a sleeving mode, the mold is simple in structure, the mutual inductor shell embedded with the I-shaped sleeve can be obtained through the mold, the connection strength of the sleeve and the mutual inductor shell is high, and the mutual inductor shell is easy to demold.

Description

Technical Field

[0001] The utility model belongs to the field of injection molds, and in particular relates to a mold for a Rogowski coil puncture slider mutual inductor. Background Art

[0002] The transformer housing is a plastic shell, commonly produced using injection molds. The housing of a Rogowski coil piercing slider transformer is composed of a curved segment and a vertical segment connected in a hook-like shape. The curved segment's outer surface is designed with multiple grooves, and the vertical segment has a through hole running through it along its length. An I-shaped sleeve is inserted into the through hole, and a horizontal T-shaped protrusion is also designed on the outside of the vertical segment. Therefore, how to ensure a stable connection between the sleeve and the housing and facilitate molding and demolding is a problem that technicians in this field need to consider and solve. Utility Model Content

[0003] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a transformer mold for a Rogowski coil puncture slider, which has a simple structure. The transformer housing inlaid with an I-shaped bushing can be obtained by using the mold. The connection strength between the bushing and the transformer housing is high, and the transformer housing is easy to demold.

[0004] The specific technical solution adopted in this utility model is:

[0005] A transformer mold for a Rogowski coil puncture slider comprises a guiding-connected die assembly, a punch assembly, and an ejection assembly and a transverse molding assembly arranged on the punch assembly, the die assembly being provided with an injection port, the die assembly, the punch assembly and the transverse molding assembly being buckled together to form a molding cavity of a transformer housing, the transverse molding assembly comprising telescopic cylinders mounted on the left and right sides of the punch assembly, a first transverse block and a second transverse block respectively connected to the telescopic cylinders on both sides, the molding surface of the first transverse block being matched with the outer arc surface of the arc section of the transformer housing, the first transverse block being provided with a first protrusion, the second transverse block being provided with a second protrusion and a sleeve rod arranged at the front end of the second protrusion, the sleeve being sleeved on the sleeve rod, the first protrusion and the second protrusion being respectively larger than the diameter of the sleeve and respectively abutting against the two ends of the sleeve to form a through hole on the vertical section of the transformer housing.

[0006] The female mold assembly, male mold assembly and transverse molding assembly are buckled to form two molding cavities of the mutual inductor housing. The molding cavities are arranged in a mirror image along the injection port and are respectively connected to the injection port via a diversion channel.

[0007] A forming block is provided on the first transverse moving block, the forming surface is located on the overhanging end of the forming block, the fixed end of the forming block is in an inverted L-shape, and a lap groove matching the L-shaped fixed end is provided on the first transverse moving block. The fixed end is overlapped with the lap groove and fixedly connected by means of bolts.

[0008] The second transverse block is provided with a pin hole, the rear end of the second protrusion is provided with a pin shaft matching the pin hole, the diameter of the pin shaft is larger than the diameter of the second protrusion, and a transition cone is provided between the pin shaft and the second protrusion.

[0009] The punch assembly is respectively provided with a first guide groove and a second guide groove matching the first transverse block and the second transverse block, and the bottom of the first guide groove and the bottom of the second guide groove have different heights. The first transverse block and the second transverse block are respectively provided with a first positioning block and a second positioning block, and the lengths of the first positioning block and the second positioning block are different. The die assembly is provided with a positioning groove matching the first positioning block and the second positioning block.

[0010] The ejection assembly includes an ejector block and a group of ejector pins arranged on the ejector block. The ejector block is fixedly connected to a guide column that slides with the punch assembly. The punch assembly is connected to the base by means of a column. The ejector block is arranged between the punch assembly and the base, and the ejector block and the punch assembly are provided with a reset spring. The ejector pins are respectively arranged corresponding to the end of the molding cavity and the diversion channel.

[0011] The beneficial effects of the utility model are:

[0012] The utility model adopts a method of arranging a transverse forming component on a convex mold component so that the transverse forming component cooperates to form an outer arc surface with a groove of a transformer housing, a first protrusion and a second protrusion respectively form the two ends of the through hole inner cavity, and a sleeve on the sleeve rod is used to form the middle section of the through hole inner cavity. At the same time, the plastic melt in the molding cavity wraps the sleeve. After cooling, the sleeve is tightly connected to the transformer housing. The transverse forming component retreats, and the sleeve rod is separated from the sleeve, which facilitates demoulding of the transformer housing. After the mold is opened, the transformer housing inlaid with the I-shaped sleeve can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the main view of the utility model;

[0014] Figure 2 for Figure 1 Bottom view of the die assembly;

[0015] Figure 3 for Figure 1 A top view of the structure after removing the die assembly;

[0016] Figure 4It is a top view of the utility model;

[0017] Figure 5 for Figure 4 AA sectional view;

[0018] Figure 6 for Figure 5 A magnified schematic diagram of part B in the middle;

[0019] Figure 7 This is a schematic diagram of the assembly of the punch assembly, ejection assembly, and transverse forming assembly after mold opening;

[0020] Figure 8 for Figure 7 A magnified schematic diagram of the local C in the middle;

[0021] Figure 9 This is the axonometric drawing of the transformer housing;

[0022] In the accompanying drawings, 1. die assembly, 2. punch assembly, 3. ejector assembly, 5. injection port, 6. transformer housing, 7. molding cavity, 8. telescopic cylinder, 9. first transverse moving block, 10. second transverse moving block, 11. arc segment, 12. first protrusion, 13. second protrusion, 14. sleeve rod, 15. sleeve, 16. vertical segment, 17. through hole, 18. diversion channel, 19. molding block, 20. overhanging end, 21. fixed end, 22. lap groove, 23. pin hole, 24. pin shaft, 25. transition cone, 26. first guide groove, 27. second guide groove, 28. first positioning block, 29. second positioning block, 30. positioning groove, 31. ejector block, 32. ejector pin, 33. guide column, 34. column, 35. base, 36. reset spring. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0024] Specific implementation examples Figure 1-9As shown, a transformer mold for a Rogowski coil puncture slider comprises a female mold component 1 and a male mold component 2 connected by a guide, and an ejection component 3 and a transverse molding component arranged on the male mold component 2. The female mold component 1 is provided with an injection port 5. The female mold component 1, the male mold component 2 and the transverse molding component are buckled together to form a molding cavity 7 of a transformer housing 6. The transverse molding component comprises a telescopic cylinder 8 installed on the left and right sides of the male mold component 2, a first transverse block 9 connected to the telescopic cylinder 8 on both sides, and a second transverse block 9. The moving block 10 and the forming surface of the first transverse moving block 9 are matched with the outer arc surface of the arc section 11 of the transformer housing 6. The first transverse moving block 9 is provided with a first protrusion 12, and the second transverse moving block 10 is provided with a second protrusion 13 and a sleeve rod 14 arranged at the front end of the second protrusion 13. The sleeve 15 is sleeved on the sleeve rod 14. The first protrusion 12 and the second protrusion 13 are respectively larger than the diameter of the sleeve 15 and respectively abut against the two ends of the sleeve 15 and jointly form a through hole 17 on the vertical section 16 of the transformer housing 6.

[0025] The sleeve 15 is sleeved on the sleeve rod 14, and the sleeve rod 14 limits the axis of the sleeve 15 so that the sleeve 15 is coaxially arranged with the through hole 17; the first protrusion 12 and the second protrusion 13 abut against the sleeve 15, that is, a limit is formed on the installation depth of the sleeve 15 in the through hole 17; the first protrusion 12, the second protrusion 13 and the sleeve rod 14 limit the sleeve 15 to ensure that the embedding depth of the sleeve 15 on the transformer housing 6 is consistent. After cooling, the plastic melt in the molding cavity 7 wraps the sleeve 15, and because the sleeve 15 is an I-shaped structure, an inwardly protruding annular structure is formed in the middle position of the through hole 17. The annular structure forms a limit with both ends of the sleeve 15 to prevent the sleeve 15 from moving along its axial direction as the sleeve rod 14 withdraws when the mold is opened. When the mold is opened, the die assembly 1 is separated from the punch assembly 2, and then the first transverse block 9 carrying the first protrusion 12 and the second transverse block 10 carrying the second protrusion 13 retreat respectively, the first protrusion 12 and the second protrusion 13 are separated from the transformer housing 6 respectively, and at the same time the sleeve rod 14 is separated from the sleeve 15, and the sleeve 15 is embedded in the transformer housing 6 and firmly connected to the transformer housing 6. After the first transverse block 9 and the second transverse block 10 retreat, it does not affect the demoulding of the transformer housing 6; finally, the ejection assembly 3 and the punch assembly 2 produce relative movement, and the ejection assembly 3 lifts the transformer housing 6 on the punch assembly 2, so that the transformer housing 6 can be demoulded smoothly.

[0026] The female mold assembly 1, the male mold assembly 2, and the transverse molding assembly engage to form two molding cavities 7 for the transformer housings 6. These molding cavities 7 are mirror-imaged along the injection port 5 and connected to the injection port 5 via diverter channels 18. After mold closing, injection port 5 uniformly injects molded material into both molding cavities 7, ensuring product quality. A single mold closing, injection, and mold opening process yields two transformer housings 6, improving production efficiency. The diverter channels 18 are connected to the molding cavities 7 via a latent gate, ensuring good material flow, reducing deformation of the transformer housings 6, and improving product quality.

[0027] A forming block 19 is provided on the first transverse block 9, and the forming surface is located on the overhanging end 20 of the forming block 19. The fixed end 21 of the forming block 19 is in an inverted L-shape. A lap groove 22 matching the L-shaped fixed end 21 is provided on the first transverse block 9. The fixed end 21 overlaps and snaps with the lap groove 22 and is fixedly connected with bolts. The lap groove 22 overlaps and snaps with the fixed end 21, which is convenient for loading and unloading, and limits the forming block 19 to prevent the forming block 19 and the first transverse block 9 from generating relative movement in the moving direction of the first transverse block 9, thereby improving the forming accuracy, reducing the amount of material used in the forming block 19 used to form the forming cavity 7, and saving the production cost of the mold.

[0028] A pin hole 23 is provided on the second transverse block 10, and a pin shaft 24 matching the pin hole 23 is provided at the rear end of the second protrusion 13. The diameter of the pin shaft 24 is larger than the diameter of the second protrusion 13. A transition table 25 is provided between the pin shaft 24 and the second protrusion 13, which is convenient for processing and loading and unloading. There is no need to make the second transverse block 10 and the second protrusion 13 integrated, further saving the production cost of the mold.

[0029] The punch assembly 2 is respectively provided with a first guide slot 26 and a second guide slot 27 which are matched with the first transverse block 9 and the second transverse block 10. The bottom of the first guide slot 26 and the bottom of the second guide slot 27 are at different heights. The first transverse block 9 and the second transverse block 10 are respectively provided with a first positioning block 28 and a second positioning block 29. The lengths of the first positioning block 28 and the second positioning block 29 are different. The die assembly 1 is provided with a positioning slot 30 which is matched with the first positioning block 28 and the second positioning block 29. The first guide slots 26 and the second guide slots 27 with different slot bottom heights are combined with the first positioning blocks 28 and the second positioning blocks 29 with different lengths to form a fool-proof structure of the first transverse block 9 and the second transverse block 10, so as to avoid the first transverse block 9 and the second transverse block 10 being installed upside down on the punch assembly 2, and the first positioning block 28 and the second positioning block 29 not matching the positioning slot 30 after being installed upside down, so as to prevent the die assembly 1 and the punch assembly 2 from continuing to close the mold and causing damage to the mold. The cross-sections of the first positioning block 28 and the second positioning block 29 are trapezoidal, and the side walls around the first positioning block 28 and the second positioning block 29 are set at an angle α with the side walls of the punch assembly 2. The side walls of the positioning groove 30 are respectively at the same angle as the side walls of the first positioning block 28 and the second positioning block 29. During the mold closing process, the side walls of the positioning groove 30 are respectively fitted with the side walls of the first positioning block 28 and the second positioning block 29 to position the first transverse block 9 and the second transverse block 10, thereby ensuring the position accuracy of the transverse molding assembly on the punch assembly 2 during mold closing and improving the product quality of the transformer housing 6.

[0030] Furthermore, during the mold closing process, the outer wall of the positioning groove 30 fits with the outer wall of the first positioning block 28 and the second positioning block 29, ensuring the accurate positioning of the first transverse block 9 and the second transverse block 10 while reducing the contact area, making the fitting area small and easy to process.

[0031] The ejection assembly 3 includes an ejector block 31 and a group of ejector pins 32 arranged on the ejector block 31. A guide column 33 that slides with the punch assembly 2 is fixedly connected to the ejector block 31. The punch assembly 2 is connected to the base 35 by means of a column 34. The ejector block 31 is arranged between the punch assembly 2 and the base 35, and the ejector block 31 and the punch assembly 2 are provided with a return spring 36. The ejector pins 32 are respectively arranged corresponding to the end of the molding cavity 7 and the diversion channel 18. After the die assembly 1 and the transverse molding assembly are returned to their initial positions, the transformer housing 6 remains on the punch assembly 2, the ejector block 31 moves toward the molding cavity 7, the return spring 36 is compressed, and the ejector pins 32 lift the transformer housing 6 on the punch assembly 2 and the residual material in the latent gate and the diversion channel 18 to complete the demoulding. Then the return spring 36 resets and pushes the ejector block 31 to carry the ejector pins 32 to reset.

Claims

1. A mold for a transformer with a slider for puncturing a Rogowski coil, comprising a guide-connected female mold component (1), a male mold component (2), and an ejection component (3) and a transverse molding component arranged on the male mold component (2), wherein the female mold component (1) is provided with an injection port (5), and the female mold component (1), the male mold component (2) and the transverse molding component are buckled together to form a molding cavity (7) of a transformer housing (6), characterized in that: The transverse forming assembly includes telescopic cylinders (8) installed on the left and right sides of the male mold assembly (2), a first transverse block (9) and a second transverse block (10) respectively connected to the telescopic cylinders (8) on both sides. The forming surface of the first transverse block (9) is matched with the outer arc surface of the arc section (11) of the transformer housing (6). The first transverse block (9) is provided with a first protrusion (12). The second transverse block (10) is provided with a second protrusion (13) and a sleeve rod (14) provided at the front end of the second protrusion (13). The sleeve (15) is sleeved on the sleeve rod (14). The first protrusion (12) and the second protrusion (13) are respectively larger than the diameter of the sleeve (15) and respectively abut against the two ends of the sleeve (15) to form a through hole (17) on the vertical section (16) of the transformer housing (6).

2. The mold for a Rogowski coil puncture slider mutual inductor according to claim 1, characterized in that: The female mold assembly (1), the male mold assembly (2) and the transverse molding assembly are buckled together to form molding cavities (7) of two transformer housings (6); the molding cavities (7) are arranged in a mirror image along the injection port (5) and are respectively connected to the injection port (5) via a diversion channel (18).

3. The mold for a Rogowski coil puncture slider mutual inductor according to claim 1, characterized in that: The first transverse moving block (9) is provided with a forming block (19), the forming surface is located on the overhanging end (20) of the forming block (19), the fixed end (21) of the forming block (19) is in an inverted L-shape, and the first transverse moving block (9) is provided with a lap groove (22) matching the L-shaped fixed end (21), and the fixed end (21) and the lap groove (22) are overlapped and fastened and fixedly connected by bolts.

4. The mold for a Rogowski coil puncture slider mutual inductor according to claim 1, characterized in that: The second transverse block (10) is provided with a pin hole (23), and the rear end of the second protrusion (13) is provided with a pin shaft (24) matching the pin hole (23). The diameter of the pin shaft (24) is larger than the diameter of the second protrusion (13), and a transition cone (25) is provided between the pin shaft (24) and the second protrusion (13).

5. The mold for a Rogowski coil puncture slider mutual inductor according to claim 1, characterized in that: The male mold assembly (2) is provided with a first guide groove (26) and a second guide groove (27) respectively matched with the first transverse block (9) and the second transverse block (10); the bottom of the first guide groove (26) and the bottom of the second guide groove (27) have different heights; the first transverse block (9) and the second transverse block (10) are provided with a first positioning block (28) and a second positioning block (29); the lengths of the first positioning block (28) and the second positioning block (29) are different; the female mold assembly (1) is provided with a positioning groove (30) matched with the first positioning block (28) and the second positioning block (29).

6. The mold for a Rogowski coil puncture slider mutual inductor according to claim 1, characterized in that: The ejection assembly (3) includes an ejection block (31) and a group of ejector pins (32) arranged on the ejection block (31). The ejection block (31) is fixedly connected with a guide column (33) that is slidingly matched with the punch assembly (2). The punch assembly (2) is connected to the base (35) by means of a column (34). The ejection block (31) is arranged between the punch assembly (2) and the base (35), and the ejection block (31) and the punch assembly (2) are provided with a return spring (36). The ejector pins (32) are respectively arranged corresponding to the end of the molding cavity (7) and the diversion channel (18).

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