A kind of electrical appliance box manufacturing mold and manufacturing method

Abstract

The present invention provides a mold for manufacturing an electrical box, which belongs to the field of mold technology. The mold includes a fixed mold and a movable mold. A groove is provided in the fixed mold, and the groove forms a concave mold. A transformer avoidance hole is provided in the groove. When a fixed mold insert is installed in the groove, the fixed mold insert fills the avoidance hole; when the fixed mold insert is not installed in the groove, the transformer avoidance hole is hollowed out. The movable mold and the movable mold insert form a convex mold with the movable mold. When a fixed mold insert is fixed in the groove, after the fixed mold and the movable mold are combined: a first electrical box cavity is formed between the convex mold and the concave mold; when no fixed mold insert is provided in the groove, a second electrical box cavity is formed between the convex mold and the concave mold. The mold can be used to manufacture an electrical box with a transformer avoidance position, and can also be used to manufacture an electrical box without a avoidance position, which improves the application occasions of the mold, reduces the mold cost, and has broad market prospects. The present invention also provides a method for manufacturing an electrical box using the mold.

Description

Technical Field

[0001] The invention relates to the technical field of molds, and in particular to a mold and a method for manufacturing an electrical box. Background Art

[0002] Injection molds are important process equipment for producing various industrial products and are widely used in various industries such as aviation, aerospace, electronics, machinery, ships and automobiles. Traditional injection molds are composed of two parts: a movable mold and a fixed mold. The movable mold is installed on the movable mold plate of the injection molding machine, and the fixed mold is installed on the fixed mold plate of the injection molding machine. During injection molding, the movable mold and the fixed mold are closed to form a pouring system and a cavity. When the mold is opened, the movable mold and the fixed mold are separated to remove the plastic product.

[0003] At present, an injection mold for manufacturing an electrical box has a transformer avoidance hole on the mold to facilitate the assembly of the transformer in the electrical box in subsequent use. Figure 1 As shown, the electrical box manufactured by the mold has an escape hole 13, and the escape hole needs to be sealed by installing an electrical box cover 11 when in use. The electrical box cover 11 is usually fixed to the electrical box body 12 by screws. Since the electrical box is a common item of air conditioners, the demand is very large. Each electrical box needs to be fixed with screws. It takes a lot of people and a long time to complete the production plan, which will cause a lot of human resources waste.

[0004] At present, due to the change of electrical components, some air-conditioning production lines no longer need electrical boxes with transformer avoidance holes. If the original injection mold is modified so that it can be used to manufacture both electrical boxes with transformer avoidance holes and electrical boxes without avoidance holes, the cost of producing electrical boxes for enterprises will be reduced and the benefits will be improved. Summary of the invention

[0005] In order to overcome the problems existing in the related art, one of the purposes of the present invention is to provide an electrical box manufacturing mold, which can be used to manufacture electrical boxes with transformer avoidance spaces, and can also be used to manufacture electrical boxes without avoidance spaces, thereby improving the application occasions of the mold, reducing the mold cost, and having broad market prospects.

[0006] A mold for manufacturing an electrical box, comprising:

[0007] The fixed mold comprises a fixed mold body, a groove is provided in the fixed mold body, the groove forms a concave mold, a transformer avoidance hole is provided in the groove, when a fixed mold insert is installed in the groove, the fixed mold insert fills the avoidance hole; when the fixed mold insert is not installed in the groove, the transformer avoidance hole is hollowed out;

[0008] A movable mold, the movable mold comprising a movable mold body, a movable mold insert is fixedly provided on one side of the movable mold body, and the movable mold insert and the movable mold body form a convex mold;

[0009] When the fixed mold insert is fixed in the groove, after the fixed mold and the movable mold are closed: a first electrical box cavity is formed between the male mold and the female mold, the first electrical box cavity includes a cavity A and a cavity B that are connected to each other, a cavity A is formed between the fixed mold body and the movable mold body, and a cavity B is formed between the fixed mold insert and the movable mold insert; when the fixed mold insert is not set in the groove, a second electrical box cavity is formed between the male mold and the female mold.

[0010] In a preferred technical solution of the present invention, the fixed mold further comprises an embedding block, the fixed mold body is provided with the groove, the bottom of the groove is provided with an embedding position, and the embedding block is fixed at the embedding position and matched with the embedding position.

[0011] In a preferred technical solution of the present invention, the air avoidance hole penetrates the groove along the depth direction of the groove; a connecting groove is provided on the fixed mold body, and a first accommodating groove corresponding to the connecting groove is provided on the insert block, and the air avoidance hole is formed between the first accommodating groove and the connecting groove.

[0012] In a preferred technical solution of the present invention, the fixed mold insert includes a first insert and a second insert, the first insert is fixed in the air avoidance hole; the insert block is provided with a mounting hole, the second insert is fixed in the mounting hole.

[0013] In a preferred technical solution of the present invention, a connecting block is provided on the first insert, and the connecting block is adapted to the connecting groove;

[0014] A first boss is provided on the side of the first insert facing away from the connecting block, and the first boss is matched with the first receiving groove. After the first insert is fixed in the air avoidance hole, the connecting block and the connecting groove are tightly matched, and the first boss and the first receiving groove are tightly matched.

[0015] In a preferred technical solution of the present invention, two sides of the first insert perpendicular to the first boss are provided with outwardly protruding connecting ridges, and after the first insert is fixed to the air avoidance hole, the connecting ridges are embedded in the insert block.

[0016] In a preferred technical solution of the present invention, the groove includes a first groove body and a second groove body, the first groove body is connected to the second groove body, a groove with an "L"-shaped cross-section is formed between the first groove body and the second groove body, and the air avoidance hole is arranged in the second groove body.

[0017] In a preferred technical solution of the present invention, a mounting position is provided on the movable mold body, and the movable mold insert is fixed on the mounting position to form the male mold with the movable mold body, and the male mold corresponds to the shape of the female mold.

[0018] In a preferred technical solution of the present invention, a second accommodating groove is formed on the mounting position, a second boss is provided on the movable mold insert, and after the movable mold insert is fixed on the movable mold body, the second boss is embedded in the second accommodating groove.

[0019] In a preferred technical solution of the present invention, the fixed mold is provided with an injection port, and the injection port is communicated with the groove;

[0020] The movable mold is provided with a plurality of ejector pins, and one end of each of the ejector pins penetrates the movable mold and extends into the groove.

[0021] The second object of the present invention is to provide a method for manufacturing an electrical appliance box, the manufacturing method is completed using the mold described above, and the method comprises the following steps:

[0022] When you need to make an electrical box without a transformer avoidance space:

[0023] Assembling the fixed mold and fixing the fixed mold insert in the air avoidance hole to form the concave mold;

[0024] Assembling the movable mold and fixing the movable mold insert on the movable mold to form the male mold;

[0025] Assembling the assembled fixed mold and movable mold on an injection molding machine for mold clamping, so that the first electrical box cavity is formed between the male mold and the female mold;

[0026] The electrical box with an integrated box cover is obtained by injecting material into the first electrical box cavity and cooling and solidifying the material;

[0027] When you need to make an electrical box with a transformer avoidance space:

[0028] Removing the fixed mold insert to hollow out the air-avoiding hole;

[0029] Assembling the movable mold and fixing the movable mold insert on the movable mold to form the male mold;

[0030] Assembling the assembled fixed mold and movable mold on an injection molding machine for mold closing, so that the second electrical box cavity is formed between the male mold and the female mold;

[0031] By injecting material into the second electrical box cavity, an electrical box with a transformer avoidance space is obtained after cooling and solidification.

[0032] This method can be used to manufacture an electrical box with an integrated cover, realize the integrated production of the cover and the main body of the electrical box, reduce the steps of manually fixing the cover to the electrical box with screws, save manpower and material resources, and realize automated production. It can also manufacture an electrical box with a transformer avoidance position to meet different production needs.

[0033] The beneficial effects of the present invention are:

[0034] The present invention provides a mold for manufacturing an electrical box, which includes a fixed mold and a movable mold. A groove is provided in the fixed mold, and the groove forms a concave mold. A transformer avoidance hole is provided in the groove. By setting a fixed mold insert in the avoidance hole, the transformer avoidance hole can be filled or not filled. A movable mold insert is provided on the movable mold, and the movable mold and the movable mold insert form a convex mold. When a fixed mold insert is fixed in the groove, after the fixed mold and the movable mold are molded together: a first electrical box cavity is formed between the convex mold and the concave mold; when no fixed mold insert is provided in the groove, a second electrical box cavity is formed between the convex mold and the concave mold. The first electrical box cavity includes a cavity A and a cavity B, and the cavity A is formed into the electrical box body after injection molding, and the cavity B is formed into the electrical box cover after injection molding. Therefore, the electrical box manufactured by the first electrical box cavity does not have a transformer avoidance position, and the electrical box manufactured by the second electrical box cavity has a transformer avoidance position. The mold of the present invention realizes the production of two electrical boxes with different structures on the original mold by setting inserts and inserts, thereby reducing the mold opening cost of the enterprise. The produced electrical appliance box without avoiding space can save the production link of fixing the box cover on the electrical appliance box body when used, thus saving manpower and material resources and reducing manufacturing costs.

[0035] The present invention also provides a manufacturing method for producing an electrical box using the mold. The method can be used to obtain an electrical box with an integrated box cover and no transformer avoidance space, thereby realizing automation and lean production of the electrical box and reducing the cost of producing the electrical box for an enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the structure of an electrical box with a transformer avoidance position;

[0037] Figure 2 It is a three-dimensional diagram of the manufacturing mold of the electrical appliance box provided by the present invention;

[0038] Figure 3 It is a cross-sectional view of a mold for manufacturing an electrical appliance box provided by the present invention;

[0039] Figure 4 It is a structural schematic diagram of a fixed mold provided by the present invention with a fixed mold insert fixed thereto;

[0040] Figure 5 It is a structural schematic diagram of a fixed mold provided by the present invention without installing a fixed mold insert;

[0041] Figure 6is a three-dimensional diagram of a first insert provided by the present invention;

[0042] Figure 7 is a three-dimensional diagram of a second insert provided by the present invention;

[0043] Figure 8 It is a three-dimensional diagram of the manufacturing mold of the electrical box provided by the present invention without installing the first insert;

[0044] Fig. 9 It is a three-dimensional diagram of the movable mold and the movable mold insert provided by the present invention being installed in coordination;

[0045] Fig.10 It is a three-dimensional diagram of the movable mold body provided by the present invention;

[0046] Fig.11 It is a three-dimensional diagram of the movable mold insert provided by the present invention;

[0047] Fig.12 It is a schematic diagram of the structure of an electrical box without a transformer avoidance space.

[0048] Reference numerals:

[0049] 11. Electrical box cover; 12. Electrical box body; 13. Avoidance position; 100. Fixed mold; 110. Fixed mold body; 111. Connecting groove; 112. First accommodating groove; 113. Avoidance hole; 114. Mounting hole; 120. Insert; 130. Groove; 131. First slot body; 132. Second slot body; 140. Fixed mold insert; 141. First insert; 142. Second insert; 1411. Connecting block; 1412. First boss; 1413. Connecting convex strip; 200. Moving mold; 210. Ejector pin; 220. Moving mold insert; 230. Mounting position; 240. Moving mold body; 2301. Second accommodating groove; 2201. Second boss; 300. First electrical box cavity; 310. Cavity A; 320. Cavity B. DETAILED DESCRIPTION

[0050] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0051] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms of "a", "the" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0052] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0053] like Figure 2-Figure 11 As shown, a mold for manufacturing an electrical box includes:

[0054] A fixed mold 100, the fixed mold comprising a fixed mold body 110, a groove 130 is provided in the fixed mold body 110, the groove 130 forms a concave mold, a transformer avoidance hole 113 is provided in the groove 130, when a fixed mold insert 140 is installed in the groove 130, the fixed mold insert 140 fills the avoidance hole 113; when the fixed mold insert 140 is not installed in the groove 130, the transformer avoidance hole 113 is hollowed out;

[0055] A movable mold 200, the movable mold comprising a movable mold body 240, a movable mold insert 220 is fixedly provided on one side of the movable mold body 240, and the movable mold insert 220 and the movable mold 200 form a convex mold;

[0056] When the fixed mold insert 140 is fixed in the groove 130, after the fixed mold 100 and the movable mold 200 are molded together: a first electrical box cavity 300 is formed between the male mold and the female mold, and the first electrical box cavity 300 includes a cavity A310 and a cavity B320 that are interconnected, a cavity A310 is formed between the fixed mold body 110 and the movable mold body 240, and a cavity B320 is formed between the fixed mold insert 140 and the movable mold insert 220, wherein; when the fixed mold insert 140 is not set in the groove 130, a second electrical box cavity is formed between the male mold and the female mold.

[0057] More specifically, the electrical box produced by injection molding of the first electrical box cavity 300 does not have the transformer avoidance hole 113, so there is no need to install the electrical box cover. The electrical box cover produced by injection molding of the second electrical box cavity has the transformer avoidance position 13, and the electrical box cover needs to be fixed at the avoidance position 13 for industrial application.

[0058] Further, the fixed mold 100 also includes an insert 120, the fixed mold body 110 is provided with the groove 130, the bottom of the groove 130 is provided with an insert, and the insert 120 is fixed at the insert and adapted to the insert. Further, the insert 120 and the insert are convenient for mutual sealing to prevent plastic from flowing out during injection molding. Designing the fixed mold 100 to include the fixed mold body 110 and the insert 120 in a combination form can reduce production costs on the one hand, and is conducive to lean production on the other hand. The concave mold forms the shell of the electrical box, and the convex mold forms the electrical box chamber after the injection molding is completed and demoulded, and the chamber is used to install electrical components. It should be noted that the electrical box manufactured using the mold has an opening on one side, and various electrical components are fixed through the opening, and then the electrical box with fixed electrical components is fixed on the air conditioner body. The fixed electrical box should be fixed on the air conditioner body with the opening on one side, so that the electrical box can be sealed and installed on the air conditioner body.

[0059] More specifically, the electric box manufacturing mold provided by the patent changes the shape of the original mold by setting a mold insert on the original mold to realize the integrated production of the electric box cover. The fixed mold insert 140 is set on the fixed mold 100, and the fixed mold insert 140 cooperates with the fixed mold 100 to form the external shape characteristics of the electric box. The movable mold insert 220 cooperates with the movable mold 200 to form the internal shape characteristics of the electric box. After the movable mold 200 and the fixed mold 100 are molded together, an electric box cavity with an integrated box cover can be formed. After injection molding, an electric box with an integrated box cover can be obtained, which changes the original production method of closing the electric box by the electric box cover, and reduces production costs. It should be noted that the mold includes holes for installing various electrical components. Due to space limitations, it will not be described in detail here. In addition, a heating rod hole is also provided on the fixed mold 100, and the heating rod hole is used to install the heating rod.

[0060] The above provides a mold for manufacturing an electrical box, which includes a fixed mold 100 and a movable mold 200. The fixed mold 100 is provided with a groove 130, and the groove 130 forms a concave mold. The groove 130 is provided with a transformer air-avoiding hole 113. By setting a fixed mold insert 140 in the air-avoiding hole 113, the transformer air-avoiding hole 113 can be filled or hollowed out. The movable mold 200 is provided with a movable mold insert 220, and the movable mold 200 and the movable mold insert 220 form a convex mold. When the fixed mold insert 140 is fixed in the groove 130, after the fixed mold 100 and the movable mold 200 are molded together: a first electrical box cavity 300 is formed between the convex mold and the concave mold; when the fixed mold insert 140 is not set in the groove 130, a second electrical box cavity is formed between the convex mold and the concave mold. The first electrical box cavity 300 does not have an air-avoiding hole 113, and the second electrical box cavity has an air-avoiding hole 113. The mold of the present invention can realize the production of two electrical boxes with different structures by setting the inserts and the insert blocks, which can reduce the mold opening cost of the enterprise. When the electrical box without the air-avoiding hole 113 is used, the production link of fixing the box cover on the electrical box body can be omitted, which saves manpower and material resources and reduces manufacturing costs.

[0061] like Figure 4-Figure 5 As shown, further, the groove 130 includes a first groove body 131 and a second groove body 132, the first groove body 131 is connected to the second groove body 132, and the groove 130 with an "L"-shaped cross section is formed between the first groove body 131 and the second groove body 132; the second groove body 132 is provided with a clearance hole 113 and a mounting hole 114, the clearance hole 113 passes through the fixed mold body 110 along the depth direction 132 of the second groove body, and the mounting hole 114 is opened on the insert 120. Further, the fixed mold insert 140 is provided in the second groove body 132, and the fixed mold insert 140 includes a first insert 141 and a second insert 142, the first insert 141 is fixed in the clearance hole 113, and the second insert 142 is fixed in the mounting hole 114.

[0062] The first insert 141, the second insert 142, the first slot body 131 and the second slot body 132 form a complete groove 130. That is, after the first insert 141 is fixed to the air avoidance hole 113 and the second insert 142 is fixed to the mounting hole 114, the groove 130 becomes an electrical box main body shell cavity with one side open and the bottom sealed. The cross-sectional area of ​​the second slot body 132 is larger than the cross-sectional area of ​​the first slot body 131. When the fixed mold insert 140 is not installed, the air avoidance hole 113 provided on the second slot body 132 is formed by injection molding after the fixed mold 100 and the movable mold 200 are molded together to form the transformer air avoidance hole 113. After the fixed mold insert 140 is installed, the fixed mold 100 and the movable mold 200 are molded together, and the plane of the cover of the electric appliance box can be formed at the avoidance hole 113 after injection molding. More specifically, the first insert 141 is closely matched with the fixed mold body 110 so that the cover of the electric appliance box is formed at the first insert 141 after injection molding. More specifically, the first insert 141 is provided with outwardly protruding connection ridges 1413 on both sides perpendicular to the first boss 1412. After the first insert 141 is fixed to the avoidance hole 113, the connection ridges 1413 are embedded in the insert block 120.

[0063] Furthermore, if Figure 3-4 As shown, a connecting block 1411 is provided on the first insert 141, and a connecting groove 111 is provided on the fixed mold body 110, and the connecting block 1411 is adapted to the connecting groove 111;

[0064] The first insert 141 is provided with a first boss 1412 on the side away from the connecting block 1411, and the insert 120 is provided with a first receiving groove 112 adapted to the first boss 1412. After the first insert 141 is fixed to the avoidance hole 113, the connecting block 1411 is tightly matched with the connecting groove 111, and the first boss 1412 is tightly matched with the first receiving groove 112. One side of the first insert 141 is fixed to the fixed mold body 110 through a side wall of the connecting block 1411 and the connecting groove 111, and the other side is fixed to the insert 120 through the first boss 1412 and the first receiving groove 112. It should be noted that screws are also provided between the first insert 141 and the insert 120 for fixing.

[0065] Furthermore, if Figure 8-Figure 10As shown, the movable mold body 240 is provided with a mounting position 230, and the movable mold insert 220 is fixed on the mounting position 230 to form the male mold with the movable mold body 240, and the male mold corresponds to the shape of the female mold. Further, the mounting position 230 is provided with a second receiving groove 2301, and the movable mold insert 220 is provided with a second boss 2201. After the movable mold insert 220 is fixed on the movable mold body 240, the second boss 2201 is embedded in the second receiving groove 2301. The movable mold insert 220 is better positioned on the mounting position 230 through the mutual cooperation between the second boss 2201 and the second receiving groove 2301. It should be noted that the movable mold insert 220 is fixed on the movable mold 200. In addition to the mutual cooperation between the second boss 2201 and the second receiving groove 2301, it also needs to be fixed with screws. After the screws are fixed, the screw holes need to be blocked with copper to prevent the holes from being filled with plastic during the injection molding process.

[0066] Furthermore, the fixed mold 100 is provided with an injection port, which is communicated with the groove 130 ; during the injection molding process, plastic is injected into the cavity of the electrical box integrated with the box cover through the injection port.

[0067] The movable mold 200 is provided with a plurality of ejector pins 210, and one end of each of the ejector pins 210 passes through the movable mold 200 and extends into the groove 130. The ejector pins 210 are used to eject the molded electrical box after the injection molding is completed.

[0068] A method for manufacturing an electrical appliance box, the method is completed using the above-mentioned mold, and the method comprises the following steps:

[0069] When it is necessary to make an electrical box without a transformer avoidance space 13:

[0070] Assemble the fixed mold 100 and fix the fixed mold insert 140 in the air-avoiding hole 113 to form the concave mold;

[0071] Assembling the movable mold 200, fixing the movable mold insert 220 on the movable mold 200, and forming the male mold;

[0072] The assembled fixed mold 100 and the movable mold 200 are assembled on an injection molding machine for mold clamping, so that the first electrical box cavity 300 is formed between the male mold and the female mold;

[0073] By injecting material into the first electrical box cavity 300, after cooling and solidification, an electrical box with an integrated box cover is obtained;

[0074] When it is necessary to make an electrical box with a transformer avoidance position 13:

[0075] Remove the fixed mold insert 140 to hollow out the air-avoiding hole 113;

[0076] Assembling the movable mold 200, fixing the movable mold insert 220 on the movable mold 200, and forming the male mold;

[0077] The assembled fixed mold 100 and the movable mold 200 are assembled on an injection molding machine for mold clamping, so that the second electrical box cavity is formed between the male mold and the female mold;

[0078] By injecting material into the second electrical box cavity, the electrical box with the transformer avoidance space 13 is obtained after cooling and solidification.

[0079] The method can manufacture an electrical box with an integrated cover, realize the integrated production of the cover and the main body of the electrical box, reduce the steps of manually fixing the cover to the electrical box with screws, save manpower and material resources, and realize automated production. It can also manufacture an electrical box with a transformer avoidance position 13 to meet different production needs.

[0080] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein are selected to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A mold for manufacturing an electrical box, characterized in that: include: The fixed mold comprises a fixed mold body, a groove is provided in the fixed mold body, the groove forms a concave mold, a transformer avoidance hole is provided in the groove, when a fixed mold insert is installed in the groove, the fixed mold insert fills the avoidance hole; when the fixed mold insert is not installed in the groove, the transformer avoidance hole is hollowed out; A movable mold, the movable mold comprising a movable mold body, a movable mold insert is fixedly provided on one side of the movable mold body, and the movable mold insert and the movable mold body form a convex mold; When the fixed mold insert is fixed in the groove, after the fixed mold and the movable mold are closed: a first electrical box cavity is formed between the male mold and the female mold, the first electrical box cavity includes a cavity A and a cavity B that are connected to each other, a cavity A is formed between the fixed mold body and the movable mold body, and a cavity B is formed between the fixed mold insert and the movable mold insert; when the fixed mold insert is not set in the groove, a second electrical box cavity is formed between the male mold and the female mold.

2. The electric appliance box manufacturing mold according to claim 1, characterized in that: The fixed mold also includes an embedding block, and an embedding position is provided at the bottom of the groove. The embedding block is fixed at the embedding position and is adapted to the embedding position.

3. The electric appliance box manufacturing mold according to claim 2, characterized in that: The avoidance hole penetrates the groove along the depth direction of the groove; a connecting groove is provided on the fixed mold body, and a first accommodating groove corresponding to the connecting groove is provided on the insert block, and the avoidance hole is formed between the first accommodating groove and the connecting groove.

4. The electric appliance box manufacturing mold according to claim 3, characterized in that: The fixed mold insert comprises a first insert and a second insert, wherein the first insert is fixed in the air avoidance hole; a mounting hole is provided on the insert block, and the second insert is fixed in the mounting hole.

5. The electric appliance box manufacturing mold according to claim 4, characterized in that: A connecting block is provided on the first insert, and the connecting block is adapted to the connecting groove; a first boss is provided on the side of the first insert facing away from the connecting block, and the first boss is adapted to the first receiving groove. After the first insert is fixed in the air avoidance hole, the connecting block is tightly fitted with the connecting groove, and the first boss is tightly fitted with the first receiving groove.

6. The electric appliance box manufacturing mold according to claim 5, characterized in that: The first insert is provided with outwardly protruding connection ridges on two sides perpendicular to the first boss. After the first insert is fixed to the air avoidance hole, the connection ridges are embedded in the insert block.

7. The electric appliance box manufacturing mold according to claim 4, characterized in that: The groove includes a first groove body and a second groove body, the first groove body is connected to the second groove body, a groove with an "L"-shaped cross-section is formed between the first groove body and the second groove body, and the air avoidance hole is arranged in the second groove body.

8. The electric appliance box manufacturing mold according to claim 1, characterized in that: The movable mold body is provided with a mounting position, the movable mold insert is fixed on the mounting position and forms the convex mold with the movable mold body, and the shapes of the convex mold and the concave mold correspond to each other.

9. The electric appliance box manufacturing mold according to claim 8, characterized in that: A second accommodating groove is formed on the installation position, and a second boss is provided on the movable mold insert. After the movable mold insert is fixed on the movable mold body, the second boss is embedded in the second accommodating groove.

10. The electric appliance box manufacturing mold according to any one of claims 1 to 9, characterized in that: The fixed mold is provided with an injection port, and the injection port is communicated with the groove; The movable mold is provided with a plurality of ejector pins, and one end of each of the ejector pins penetrates the movable mold and extends into the groove.

11. A method for manufacturing an electrical appliance box, characterized in that: The manufacturing method is completed using the mold according to any one of claims 1 to 10, and the method comprises the following steps: When you need to make an electrical box without a transformer avoidance space: Assembling the fixed mold and fixing the fixed mold insert in the air avoidance hole to form the concave mold; Assembling the movable mold and fixing the movable mold insert on the movable mold to form the male mold; Assembling the assembled fixed mold and movable mold on an injection molding machine for mold clamping, so that the first electrical box cavity is formed between the male mold and the female mold; The electrical box with an integrated box cover is obtained by injecting material into the first electrical box cavity and cooling and solidifying the material; When you need to make an electrical box with a transformer avoidance space: Removing the fixed mold insert to hollow out the air-avoiding hole; Assembling the movable mold and fixing the movable mold insert on the movable mold to form the male mold; Assembling the assembled fixed mold and movable mold on an injection molding machine for mold closing, so that the second electrical box cavity is formed between the male mold and the female mold; By injecting material into the second electrical box cavity, an electrical box with a transformer avoidance space is obtained after cooling and solidification.

Images