Mould for charging pile leakage protection mutual inductor

Abstract

The utility model belongs to the field of injection molds, and particularly relates to a charging pile leakage protection mutual inductor mold which comprises a female mold assembly and a male mold assembly, the female mold assembly comprises a female mold bottom plate, a female mold body, a female mold insert and a female mold ejection assembly, the female mold insert is installed on the female mold body, and the male mold ejection assembly is installed on the female mold body. The female die body is installed on the female die bottom plate, the female die ejection assembly comprises a female die ejection plate and a female die ejection rod installed on the female die ejection plate, an installation groove is formed in the female die body, and the female die ejection plate is located in the installation groove and connected with the female die body in a guiding mode. The female die ejection plate is connected with the ejection driving unit, the female die ejection rod is lifted by the female die assembly by means of the driving unit and used for separating the mutual inductor shell from the female die assembly, the die is reasonable in structural design, the mutual inductor shell of a complex structure can be smoothly formed and demolded, and matched production of the charging pile leakage protection mutual inductor shell is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to injection mold field, concretely relates to a kind of for charging pile leakage mutual inductor mold. BACKGROUND

[0002] Charging pile leakage mutual inductor is formed by four shell bodies, and the structure of two shell bodies is complex, recess is designed on shell end face, and recess with smaller size is designed in shell cavity or sidewall, therefore, how to reasonably injection molding of mutual inductor shell and smoothly demoulding is the problem to be solved by the person skilled in the art;On the other hand, if each shell body is designed with a set of mold, then the mutual inductor shell needs four sets of molds for production, and more space and manpower need to be invested, and the production cost of mutual inductor shell is high, therefore, the mold can be designed as one mold with multiple cavities to produce multiple shell bodies, but it is difficult to ensure that the quality of multiple shell bodies produced by one clamping is qualified in actual production, once one of the shell bodies is unqualified or damaged, to supplement the number of shell body, it needs to be injection molded again, which causes waste of raw materials when producing multiple shell bodies simultaneously. SUMMARY

[0003] In order to solve the problems existing in the prior art, the utility model provides a kind of for charging pile leakage mutual inductor mold, and the structure is reasonably designed, can be smoothly formed and demoulded to the mutual inductor shell with complex structure, realizes the matched production of charging pile leakage mutual inductor shell.

[0004] The specific technical scheme adopted by the utility model is:

[0005] A kind of for charging pile leakage mutual inductor mold, including die assembly and male die assembly, the die assembly and male die assembly are matched to form the forming cavity of mutual inductor shell, the die assembly is provided with pouring gate being communicated with forming cavity, the key lies in, the die assembly includes die base plate, die body and die ejector assembly, the die body is installed on die base plate, the die ejector assembly includes die ejector plate and die ejector rod being installed on die ejector plate, the die body is provided with installation groove being located above forming cavity, the die ejector plate is located in installation groove and is guidedly connected with die body, the die ejector plate is connected with ejector drive unit, the die ejector rod is lifted by die assembly by means of drive unit for separating mutual inductor shell and die assembly.

[0006] The die assembly further includes die insert block, and the die insert block is installed on the die body.

[0007] The punch assembly comprises a punch base plate, a punch body, a punch insert and a punch ejection assembly, the punch body is installed on the punch base plate, the punch insert is installed on the punch body, the punch ejection assembly comprises a punch ejection plate and a punch ejector pin arranged on the punch ejection plate, the punch ejection plate is arranged between the punch base plate and the punch body, the punch ejection plate is in guided connection with the punch body, the punch ejection plate is connected with a push rod of an injection molding machine, and the punch ejector pin is lifted from the punch assembly by means of the push rod to separate the transformer shell from the punch assembly.

[0008] The punch ejector pin comprises a first ejector pin, a second ejector pin and a top block, the top block is arranged above the second ejector pin, the top block is in sliding guide connection with the punch body or the punch insert, vertical sliding surfaces and inclined guide convex edges are arranged on the top block respectively, the top block has a translational degree of freedom relative to the second ejector pin by means of the guide of the inclined guide convex edges, and the first ejector pin and the top block are used for forming the forming cavity.

[0009] The transformer shell comprises a first shell, a second shell, a third shell and a fourth shell, the forming cavity comprises a first cavity, a second cavity, a third cavity and a fourth cavity which are matched with the first shell, the second shell, the third shell and the fourth shell respectively, the punch ejector pin is used for forming the first cavity and the second cavity, and the sprue is in communication with the first cavity, the second cavity, the third cavity and the fourth cavity by means of the shunt channel.

[0010] The shunt channel comprises a main channel, a first channel, a second channel, a third channel and a fourth channel which are arranged on both sides of the main channel respectively, the first channel, the second channel and the third channel are arranged on the punch body respectively, the fourth channel is arranged on the punch assembly, the first channel and the second channel are in communication with the first cavity and the second cavity by means of the submarine gate respectively, and the third channel and the fourth channel are in communication with the third cavity and the fourth cavity respectively.

[0011] The shunt channel is provided with throttle valves matched with the first cavity, the second cavity, the third cavity and the fourth cavity respectively.

[0012] The driving unit is a spring, two ends of the spring are connected with the punch base plate and the punch ejection plate respectively, a guide rod is arranged on the punch ejection plate, and the punch ejection plate is in guided connection with the punch body by means of the guide rod.

[0013] The utility model discloses the beneficial effect is:

[0014] 1、 the utility model discloses in the recessed die assembly additionally has recessed die ejection assembly, and the recessed die ejection assembly pushes the transformer shell of complex structure, having deep cavity when opening the mould, places the transformer shell and holds in the recessed die assembly, ensures that the transformer shell demoulds smoothly;

[0015] 2. The male mold ejection assembly comprises a top block, an inclined guide convex edge is arranged on the top block, the second top rod pushes the top block upward, the top block is guided by the inclined guide convex edge to generate translation with the side wall of the transformer shell, and the transformer shell with the concave-convex structure on the side wall can be smoothly demolded;

[0016] 3. The shunt channels are respectively provided with throttle valves, the flow rates of the shunt channels are adjusted through the throttle valves, the distribution of the injection pressure in the mold is adjusted, the quality of the plastic parts is improved, the single-piece production of the shell is realized by closing the forming cavities corresponding to other shells, the shells are matched with other shells, and raw material waste is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the female mold assembly of the utility model;

[0018] Figure 2 It is a structure schematic view of the male mold assembly of the utility model;

[0019] Figure 3 It is a top view of the utility model;

[0020] Figure 4 It is Figure 3 It is a sectional view in the direction of A-A;

[0021] Figure 5 It is Figure 3 It is a sectional view in the direction of B-B;

[0022] Figure 6 It is a structure schematic view of the transformer shell;

[0023] Figure 7 It is Figure 1 It is a state schematic view of the female mold ejection assembly being lifted;

[0024] Figure 8 It is Figure 2 It is a state schematic view of the male mold ejection assembly being lifted;

[0025] In the drawings, 1 is a pouring gate, 2 is a female mold bottom plate, 3 is a female mold body, 4 is a female mold insert, 5 is a female mold ejection plate, 6 is a female mold top rod, 7 is a driving unit, 8 is a male mold bottom plate, 9 is a male mold body, 10 is a male mold insert, 11 is a male mold ejection plate, 12 is a first top rod, 13 is a second top rod, 131 is a rectangular rod, 132 is a cylindrical rod, 14 is a top block, 141 is a first sub-block, 142 is a second sub-block, 15 is a guide rod, 17 is a first shell, 18 is a second shell, 19 is a third shell, 20 is a fourth shell, 21 is a first cavity, 22 is a second cavity, 23 is a third cavity, 24 is a fourth cavity, 25 is a main channel, 26 is a first channel, 27 is a second channel, 28 is a third channel, 29 is a fourth channel, and 30 is a throttle valve. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0027] Specific implementation examples Figures 1-6 As shown, this utility model relates to a mold for a leakage current transformer in a charging pile, including a concave mold assembly and a convex mold assembly. The current transformer housing includes a first housing 17, a second housing 18, a third housing 19, and a fourth housing 20. The concave mold assembly and the convex mold assembly are matched to form a molding cavity for the current transformer housing. The molding cavity includes a first cavity 21, a second cavity 22, a third cavity 23, and a fourth cavity 24. The first cavity 21 is adapted to the first housing 17, the second cavity 22 is adapted to the second housing 18, the third cavity 23 is adapted to the third housing 19, and the fourth cavity 24 is adapted to the fourth housing 20. The concave mold assembly is provided with a pouring port 1 that communicates with the molding cavity. The pouring port 1 is connected to the first cavity 21, the second cavity 22, the third cavity 23, and the fourth cavity 24 respectively through a flow distribution channel. This allows for the production of multiple parts from a single mold. All housings that can be assembled into current transformers can be obtained in one mold opening, ensuring that housings can be supplied in a timely manner and avoiding the impact on the production of current transformers due to a shortage of a certain housing.

[0028] The die assembly includes a die base plate 2, a die body 3, a die insert 4, and a die ejection assembly. The die insert 4 is mounted on the die body 3, and the die body 3 is mounted on the die base plate 2. The die ejection assembly includes a die ejection plate 5 and a die ejector rod 6 mounted on the die ejection plate 5. The die body 3 has mounting grooves located above the first cavity 21 and the second cavity 22. The die ejection plate 5 is located in the mounting grooves and is guided and connected to the die body 3. The die ejection plate 5 is connected to the ejection drive unit 7. The die ejector rod 6 rises from the die assembly with the help of the drive unit 7 to separate the current transformer housing from the die assembly. The die ejector rod 6 is used to form the first cavity 21 and the second cavity 22, that is, the die ejector rod 6 is adapted to the first housing 17 and the second housing 18.

[0029] The die insert 4 is embedded in the die body 3 and protrudes from the die body 3 or from the cavity on the die body 3. The forming surface of the die insert 4 is easy to process. After processing, the die insert 4 is assembled with the die body 3, which greatly optimizes the processing of the die body 3, reduces the processing difficulty of the die body 3, and enables the injection mold to produce complex transformer housings. The die insert 4 participates in the formation of the first cavity 21, the second cavity 22, the third cavity 23, and the fourth cavity 24.

[0030] Because the first shell 17 and the second shell 18 have complex structures and numerous concave and convex components, they are not easily demolded from the die assembly. Therefore, a die ejection assembly was added. During mold opening, the punch assembly and the die assembly separate, such as... Figure 7As shown, the driving unit 7 pushes the die ejector plate 5, the die ejector plate 5 moves in the direction of the die assembly in the mounting groove of the die body 3, the die ejector rod 6 lifts the first shell 17 and the second shell 18 from the die assembly, and the first shell 17 and the second shell 18 are demolded from the die assembly.

[0031] The third shell 19 and the fourth shell 20 have simple structures and no narrow deep cavity. The third shell 19 has a buckle on the structure, and the buckle is hooked with the die assembly. Therefore, the third shell 19 and the fourth shell 20 can be smoothly demolded from the die assembly.

[0032] Preferably, the driving unit 7 is a spring, the two ends of the spring are connected with the die bottom plate 2 and the die ejector plate 5 respectively, the die ejector plate 5 is provided with a guide rod 15, and the die ejector plate 5 is connected with the die body 3 in a guided manner through the guide rod 15. When the mold is closed, the die assembly pushes the guide rod 15, so that the die ejector plate 5 and the die ejector rod 6 are reset, and the spring is compressed. When the mold is opened, the die assembly is separated from the die assembly, the spring is reset, the die ejector plate 5 and the die ejector rod 6 are pushed up to lift the first shell 17 and the second shell 18 for demolding.

[0033] Further, as shown in Figure 2 , Figure 4 , Figure 5 , the die assembly includes a die bottom plate 8, a die body 9, a die insert 10, and a die ejector assembly. The die body 9 is mounted on the die bottom plate 8, the die insert 10 is mounted on the die body 9, the die ejector assembly includes a die ejector plate 11 and a die ejector rod provided on the die ejector plate 11, the die ejector plate 11 is arranged between the die bottom plate 8 and the die body 9, the die ejector plate 11 is connected with the die body 9 in a guided manner, and the die ejector plate 11 is connected with a push rod of the injection molding machine, as shown in Figure 8 , the die ejector rod is lifted from the die assembly by the push rod for separating the transformer shell from the die assembly. The die insert 10 is machined separately, the forming surface of the die insert 10 is easy to machine, and the die insert 10 is assembled on the die body 9 after machining, which meets the forming requirements of the transformer shell with a deep cavity, makes the machining of the die body 9 simple and easy to implement, and realizes the production of the transformer shell with a complex structure and a deep cavity. The die insert 10 participates in the formation of the first cavity 21 and the second cavity 22.

[0034] Further, the punch ejector rod comprises a first ejector rod 12, a second ejector rod 13 and a top block 14, the top block 14 is arranged above the second ejector rod 13, the top block 14 is slidingly arranged with the punch body 9 or the punch insert 10, the top block 14 is respectively provided with a vertical sliding surface and an inclined guide convex edge, the top block 14 has a translational degree of freedom relative to the second ejector rod 13 by means of the inclined guide convex edge, the first ejector rod 12 and the top block 14 are used to form the forming cavity, specifically, the first ejector rod 12 is correspondingly arranged with the first shell 17, the second shell 18 and the fourth shell 20, and is used to form the first cavity 21, the second cavity 22 and the fourth cavity 24 respectively. The top block 14 comprises a first sub-block 141 and a second sub-block 142, wherein the first sub-block 141 is used to form the first cavity 21, and the second sub-block 142 is used to form the third cavity 23. The left and right sides of the first sub-block 141 are provided with vertical sliding surfaces, and one side of the first sub-block 141 extends outwardly to form an inclined guide convex edge; the left and right sides of the second sub-block 142 are provided with vertical sliding surfaces, and the left and right sides of the second sub-block 142 respectively extend outwardly to form inclined guide convex edges. In the process of lifting the first sub-block 141 and the second sub-block 142, the first sub-block 141 and the second sub-block 142 respectively produce translation by means of the inclined guide convex edges thereon, the first sub-block 141 and the second sub-block 142 are separated from the side walls of the formed first shell 17 and third shell 19 respectively, so that the concave-convex structure on the side walls of the first shell 17 and the third shell 19 is formed, and the mold can be smoothly demolded.

[0035] The second ejector rod 13 comprises a rectangular rod 131 and a cylindrical rod 132, wherein the rectangular rod 131 is provided with a sliding groove, the lower end of the first sub-block 141 is slidingly connected with the rectangular rod 131 by means of the sliding groove, and the cylindrical rod 132 is located below the second sub-block 142 and abuts against the lower end surface of the second sub-block 142.

[0036] Further, the flow distribution channel comprises a main channel 25, a first channel 26, a second channel 27, a third channel 28 and a fourth channel 29 arranged on both sides of the main channel 25 respectively, the first channel 26, the second channel 27 and the third channel 28 are respectively arranged on the die body 3, and the fourth channel 29 is arranged on the punch assembly, the first channel 26 and the second channel 27 are respectively communicated with the first cavity 21 and the second cavity 22 by means of the latent gate, and the third channel 28 and the fourth channel 29 are respectively communicated with the third cavity 23 and the fourth cavity 24.

[0037] The shunt passage is respectively provided with a throttle valve 30 matched with the first cavity 21, the second cavity 22, the third cavity 23 and the fourth cavity 24, the flow rate of the melt flowing to each forming cavity is controlled by adjusting the opening of the throttle valve 30, the distribution of the injection pressure in the mold is adjusted, the forming cavities are fully filled with the melt, and the quality of the plastic parts is improved; on the other hand, when one of the first shell 17, the second shell 18, the third shell 19 and the fourth shell 20 is a defective product or is damaged, the corresponding forming cavity of the other shell can be closed, the single-piece production of the shell is carried out to match with the other shell, and the waste of raw materials is avoided.

Claims

1. A mold for a leakage protection transformer of a charging pile, comprising a female mold assembly and a male mold assembly, the female mold assembly and the male mold assembly are matched to form a forming cavity of a transformer shell, a pouring gate (1) in communication with the forming cavity is arranged on the female mold assembly, characterized in that: The concave die assembly comprises a concave die base plate (2), a concave die body (3) and a concave die ejection assembly, the concave die body (3) is installed on the concave die base plate (2), the concave die ejection assembly comprises a concave die ejection plate (5) and a concave die ejector pin (6) installed on the concave die ejection plate (5), the concave die body (3) is provided with an installation groove above the forming cavity, the concave die ejection plate (5) is connected with the concave die body (3) in a guided manner in the installation groove, the concave die ejection plate (5) is connected with an ejection driving unit (7), and the concave die ejector pin (6) is lifted by the driving unit (7) from the concave die assembly for separating the transformer shell from the concave die assembly.

2. A mold for a leakage protection transformer for a charging pile according to claim 1, characterized in that: The concave die assembly further comprises a concave die insert (4), and the concave die insert (4) is installed on the concave die body (3).

3. The mold for a leakage protection transformer for a charging pile according to claim 1, characterized in that: The convex die assembly comprises a convex die base plate (8), a convex die body (9), a convex die insert (10) and a convex die ejection assembly, the convex die body (9) is installed on the convex die base plate (8), the convex die insert (10) is installed on the convex die body (9), the convex die ejection assembly comprises a convex die ejection plate (11) and a convex die ejector pin arranged on the convex die ejection plate (11), the convex die ejection plate (11) is arranged between the convex die base plate (8) and the convex die body (9), the convex die ejection plate (11) is connected with the convex die body (9) in a guided manner, the convex die ejection plate (11) is connected with a push rod of the injection molding machine, and the convex die ejector pin is lifted by the push rod from the convex die assembly for separating the transformer shell from the convex die assembly.

4. The mold for a leakage protection mutual inductor of a charging pile according to claim 3, characterized in that: The convex die ejector pin comprises a first ejector pin (12), a second ejector pin (13) and a top block (14), the top block (14) is arranged above the second ejector pin (13), the top block (14) is arranged in a sliding guide manner with the convex die body (9) or the convex die insert (10), the top block (14) is respectively provided with a vertical sliding surface and an inclined guide convex edge, the top block (14) has a translational degree of freedom relative to the second ejector pin (13) by the guidance of the inclined guide convex edge, and the first ejector pin (12) and the top block (14) are used for forming the forming cavity.

5. A mold for a leakage protection transformer for a charging pile according to claim 1, characterized in that: The transformer shell comprises a first shell (17), a second shell (18), a third shell (19) and a fourth shell (20), the forming cavity comprises a first cavity (21), a second cavity (22), a third cavity (23) and a fourth cavity (24) respectively matched with the first shell (17), the second shell (18), the third shell (19) and the fourth shell (20), the concave die ejector pin (6) is used for forming the first cavity (21) and the second cavity (22), and the gate (1) is respectively communicated with the first cavity (21), the second cavity (22), the third cavity (23) and the fourth cavity (24) by means of the shunt channels.

6. A mould for a leakage mutual inductor for a charging station according to claim 5, characterized in that: The shunt channel comprises a main channel (25), a first channel (26), a second channel (27), a third channel (28) and a fourth channel (29) arranged on both sides of the main channel (25) respectively, the first channel (26), the second channel (27) and the third channel (28) are arranged on the die body (3) respectively, the fourth channel (29) is arranged on the male die assembly, the first channel (26) and the second channel (27) are communicated with the first cavity (21) and the second cavity (22) by means of the latent gate respectively, and the third channel (28) and the fourth channel (29) are communicated with the third cavity (23) and the fourth cavity (24) respectively.

7. A mold for a leakage protection transformer for a charging pile according to claim 5, characterized in that: The shunt channel is provided with a throttle valve (30) matched with the first cavity (21), the second cavity (22), the third cavity (23) and the fourth cavity (24) respectively.

8. A mold for a leakage protection transformer for a charging pile according to claim 1, characterized in that: The driving unit (7) is a spring, two ends of the spring are connected with the die bottom plate (2) and the die ejection plate (5) respectively, the die ejection plate (5) is provided with a guide rod (15), and the die ejection plate (5) is connected with the die body (3) in a guided mode by means of the guide rod (15).

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