An electric control box cover production device

Abstract

The utility model relates to mould technical field discloses an electric control box cover production device, including many electric control box cover forming die, including lower die subassembly and upper die subassembly, the top surface middle part of lower die subassembly is equipped with the glue inlet recess, the periphery of glue inlet recess and the communication glue inlet recess are equipped with a plurality of forming recess, the connecting edge of glue inlet recess and each forming recess all is equipped with at least two sections of inclined structure, the one end of each forming recess away from glue inlet recess all is equipped with the glue overflow recess, the glue overflow recess includes the first section and the second section with the first height difference, wherein the first section is along the upward inclined extension of first outlet portion terminal, the second section is along second outlet portion terminal extension and its extension beginning is higher than second outlet portion terminal, the bottom surface of upper die subassembly and the inner wall of forming recess form the forming space of electric control box cover after the die closing of upper die subassembly and lower die subassembly, through this scheme production device application, keep the production capacity, improve production efficiency, product quality and mould life simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a production device for an electrical control box cover. Background Technology

[0002] The current production of electrical control box covers generally adopts a "one-out-of-four" mold design, that is, a single mold has four cavities, and four products are formed at the same time through the pressing process. Although it seems to increase the output per unit time, there are still some problems.

[0003] First, the existing mold design requires production personnel to accurately weigh four pieces of raw material four times before each pressing, and load them into their respective mold cavities. This not only increases the number of operation steps and cycle time, but also easily leads to differences in product weight or density due to uneven material feeding, affecting consistency. Second, the pressing mold must withstand high mechanical pressure during the molding process, especially during the mold closing and pressure holding stages. The upper and lower molds and mold cores are under high stress for a long time, which can easily lead to wear, fatigue cracks, and even deformation of the cavity surface. In particular, uneven stress on each cavity in a multi-cavity mold accelerates local damage, and the molding performance of each cavity gradually deviates. This results in significant fluctuations in dimensional accuracy, surface quality, and structural strength of products in the same batch, increasing the difficulty of quality control. Utility Model Content

[0004] The present invention aims to provide a production device for electrical control box covers to solve the technical problem of the unreasonable "one-out-of-four" mold structure of existing electrical control box covers.

[0005] The basic solution provided by this utility model is: an electrical control box cover production device, including multiple electrical control box cover forming molds; the multiple electrical control box cover forming molds include a lower mold assembly and an upper mold assembly; A glue inlet groove is provided in the center of the top surface of the lower mold assembly; a plurality of molding grooves are provided around and connected to the glue inlet groove in an array. The connection edge between the glue inlet groove and each molding groove is provided with at least two inclined structures. Each molding groove has an overflow groove at the end away from the glue inlet groove; the overflow groove includes a first section and a second section with a first height difference, respectively corresponding to the molding groove forming the first outlet and the second outlet of the electrical control box cover with a second height difference, wherein the first section extends upward along the end of the first outlet, and the second section extends along the end of the second outlet with its starting point higher than the end of the second outlet. After the upper mold assembly and the lower mold assembly are closed, the bottom surface of the upper mold assembly and the inner wall of the forming groove enclose the forming space of the electrical control box cover.

[0006] The working principle and advantages of this utility model are as follows: In actual production, the mold of this scheme is arranged on the hydraulic press. The glue inlet groove is a through groove. A top plate is connected to the ejector cylinder of the hydraulic press. The top plate can completely fill the glue inlet groove and move in and out of the glue inlet groove under the action of the ejector cylinder. When the top plate is located at the bottom of the glue inlet groove, the two form a feeding cavity. Only a piece of pre-weighed raw material needs to be placed in the feeding cavity formed by the glue inlet groove and the top plate. The upper and lower molds are closed, and the ejector cylinder pushes the top plate to realize the glue extrusion process. Through precise control, the glue is injected into multiple independent molding cavities synchronously or sequentially through the glue inlet groove to realize the one-time molding of multiple products.

[0007] Compared to the traditional process of one mold with four cavities, four feedings, and one pressing, this solution still maintains a one-to-many mold structure. However, based on adapting to the new extrusion molding process and the structure of the electrical control box cover, targeted improvements have been made to the cavity geometry and the glue inlet and outlet channels, resulting in the following advantages: 1) The material feeding process has been significantly simplified through structural optimization and process updates, completely avoiding the tedious operation of weighing and feeding material in each hole in the traditional pressing process, and greatly saving personnel operation time.

[0008] 2) During the optimization of the glue inlet / outlet channel structure, initial trial production using a conventional structure revealed that the first and second outlet sections of the electrical control box cover had insufficient wall thickness. Analysis of the entire process—feeding, molding, and demolding—confirmed that while improvements to the process and mold strictly controlled the amount of raw material used per piece, reducing material waste, the conventional glue inlet / outlet structure resulted in uneven glue flow and excessive overflow, affecting the filling effect in critical areas. Therefore, through multiple rounds of verification and iterative improvements, a novel glue inlet / outlet channel structure, distinct from the conventional design, was finally designed. This structure employs an inclined glue inlet groove, optimizing the initial flow direction and pressure distribution of the glue, and combined with a two-stage overflow groove design to precisely control the overflow path and loss, resulting in more balanced glue distribution. After the improvement, it not only adapts to the existing raw material usage, effectively reducing waste, but also significantly improves the molding quality of the outlet section, ensuring uniform wall thickness and structural integrity, meeting product performance and assembly requirements, and achieving simultaneous improvement in process stability and molding accuracy.

[0009] 3) The extrusion molding process applies relatively lower and more uniform pressure, allowing for more controllable material flow. This avoids impact loads, effectively reducing overflow and flash, and keeping the burr height of the product consistently below 50μm, resulting in significantly improved surface quality. Furthermore, the extrusion molding process greatly reduces mechanical damage to the mold surface. Since the extrusion process is typically carried out at lower or room temperature, it reduces thermal stress fatigue caused by thermal cycling, extending mold life and ensuring the consistency and stability of multiple molding cavity structures.

[0010] The production equipment in this solution is applied to a hydraulic press. While maintaining the "one-to-many" production capacity of the electrical control box cover, it not only improves production efficiency and automation, but also enhances product consistency, molding yield, extends mold life, and reduces maintenance costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the upper mold assembly provided in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the lower mold assembly provided in an embodiment of the present utility model; Figure 3 for Figure 2 A partial structural diagram at point A; Figure 4 for Figure 2 A partial structural diagram at point B; Figure 5 for Figure 4 Top view of a partial structure; The markings in the accompanying drawings include: upper mold assembly 1, molding protrusion 11, lower mold assembly 2, injection groove 21, first inclined structural segment 211, second inclined structural segment 212, molding groove 22, first segment 23, arc segment 231, first arc segment 2311, second arc segment 2312, third arc segment 2313, flat segment 232, first flat segment 2321, second flat segment 2322, second segment 24, protrusion 25, and top plate 3. Detailed Implementation

[0012] The following detailed explanation illustrates the specific implementation methods: The basic implementation examples are as follows: Figure 1 and Figure 2 As shown: An electrical control box cover production device includes multiple electrical control box cover forming molds; the multiple electrical control box cover forming molds include an upper mold assembly 1 and a lower mold assembly 2; A glue inlet groove 21 is provided in the middle of the top surface of the lower mold assembly 2; a plurality of molding grooves 22 arranged in an array are provided around and connected to the glue inlet groove 21. The connecting edge of the glue inlet groove 21 and each molding groove 22 is provided with at least two inclined structures; Each molding groove 22 has an overflow groove at one end away from the glue inlet groove 21. The overflow groove includes a first section 23 and a second section 24 with a first height difference, which respectively correspond to the molding groove 22 forming the first outlet and the second outlet of the electrical control box cover with a second height difference. The first section 23 extends upward along the end of the first outlet, and the second section 24 extends along the end of the second outlet with its starting end higher than the end of the second outlet. After the upper mold assembly 1 and the lower mold assembly 2 are closed, the bottom surface of the upper mold assembly 1 and the inner wall of the forming groove 22 enclose the forming space of the electrical control box cover.

[0013] like Figure 2 As shown, in this embodiment, the glue inlet groove 21 has a rectangular structure, and the connecting edge with each molding groove 22 is located on one side of each rectangle; the length of the connecting edge with each molding groove 22 is no more than one-third of the length of the rectangle.

[0014] In this embodiment, four forming grooves 22 are provided to maintain a production capacity of one out of four. The two rectangular edges opposite to the glue inlet groove 21 are connected to the four forming grooves 22.

[0015] like Figure 3 As shown, in this embodiment, the inclined structure has two segments; the first inclined segment 211 extends downward at a first preset angle (e.g., 1-2°) from the end of the horizontal segment of the rectangle, and its proportion to the length of the connecting edge does not exceed one-half; the second inclined segment 212 extends downward at a second preset angle (e.g., 2-3°) from the end of the first inclined segment 211, and its proportion to the length of the connecting edge does not exceed one-third. The first preset angle is smaller than the second preset angle. The length of the first inclined segment 211 is greater than the length of the second inclined segment 212, and the length difference does not exceed one-quarter.

[0016] The structure of the first outlet section of the electrical control box cover is formed by the connection of an arc-shaped structure and a horizontal structure. For example... Figure 4 and Figure 5 As shown, in this embodiment, the first section 23 of the overflow groove includes an arc-shaped section 231 extending along the end of the arc-shaped structure of the first outlet and a planar section 232 extending along the end of the horizontal structure of the first outlet.

[0017] The arc segment 231 has an inward-curving structure; specifically, the arc segment 231 extends along a direction perpendicular to the extension direction (with...). Figure 5 The direction indicated by the arrow defines the direction. The arc segment 2311 is divided into a first arc segment 2311, a second arc segment 2312 and a third arc segment 2313. The first arc segment 2311 extends along the upper end of the arc structure of the first outlet. The second arc segment 2312 extends along the middle end of the arc structure of the first outlet and gradually expands outward. The second arc segment 2312 extends along the lower end of the arc structure of the first outlet and gradually contracts inward.

[0018] Planar segment 232 has an upwardly inclined and outwardly expanding structure; specifically, planar segment 232 is divided into a first planar segment 2321 and a second planar segment 2322 along the extension direction. The first planar segment 2321 is inclined upward at a first angle (e.g., 0.5-1.5°) relative to the end of the horizontal structure of the first outlet. The second planar segment 2322 is inclined upward at a second angle (e.g., 1.5-2°) relative to the end of the first planar segment 2321 and gradually expands outward, with the width at the end being greater than the width at the beginning (width is expressed as follows). Figure 5 (The direction indicated by the arrow is defined). The first angle is less than the second angle. The second planar segment 2322 has a height difference along the direction perpendicular to the extension, and the height decreases as it moves away from the arc segment 231.

[0019] In this embodiment, the connection between the first segment 23 and the second segment 24 has a protrusion 25; the protrusion 25 has a quarter-circle arc structure.

[0020] Upper mold component 1 is adapted to lower mold component 2, as follows: Figure 1 As shown, the upper mold assembly 1 has a U-shaped structure. The recess of the U-shaped structure is provided with multiple molding protrusions 11 with electrical control box cover structures, corresponding to the molding grooves 22 in the lower mold assembly 2. After the mold is closed, the gap between each molding protrusion 11 and the molding groove 22 forms an electrical control box cover molding cavity. In this embodiment, there are 4 protrusions.

[0021] In practical applications, the aforementioned electrical control box cover production device is installed at the mold mounting location of the hydraulic press, and the electrical control box cover is formed using an extrusion molding process. Specifically, the mold of this scheme is arranged on the hydraulic press, and a top plate 3 is connected to the ejector cylinder of the hydraulic press. The top plate 3 can completely fill the glue inlet groove 21 and moves in and out of the glue inlet groove 21 under the action of the ejector cylinder. When the top plate 3 is at the bottom of the glue inlet groove 21, the two form a feeding cavity. Only a pre-weighed piece of raw material needs to be placed in the feeding cavity formed by the glue inlet groove 21 and the top plate 3. The upper and lower molds are closed, and the ejector cylinder pushes the top plate 3 to realize the glue extrusion process. Through precise control, the glue is injected into multiple independent molding cavities synchronously or sequentially through the glue inlet groove to realize the one-time molding of multiple products.

[0022] By applying this solution to the production equipment, the production capacity of multiple electrical control box covers can be maintained while also improving production efficiency, product quality, and mold life.

[0023] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. An apparatus for producing an electronic control box cover, characterized in that, Including multi-electric control box cover molding mold; The multi-electric control box cover molding die includes a lower mold assembly and an upper mold assembly; A glue inlet groove is provided in the center of the top surface of the lower mold assembly; a plurality of molding grooves are provided around and connected to the glue inlet groove in an array. The connection edge between the glue inlet groove and each molding groove is provided with at least two inclined structures; Each molding groove has an overflow groove at the end away from the glue inlet groove; the overflow groove includes a first section and a second section with a first height difference, respectively corresponding to the molding groove forming the first outlet and the second outlet of the electrical control box cover with a second height difference, wherein the first section extends upward along the end of the first outlet, and the second section extends along the end of the second outlet with its starting point higher than the end of the second outlet. After the upper mold assembly and the lower mold assembly are closed, the bottom surface of the upper mold assembly and the inner wall of the forming groove enclose the forming space of the electrical control box cover.

2. The electrical control box cover production device according to claim 1, characterized in that, The glue inlet groove has a rectangular structure, and the connecting edge with each molding groove is located on one side of the corresponding rectangular side.

3. The electrical control box cover production device according to claim 1, characterized in that, The inclined structure is divided into two segments; the first inclined structure segment extends downward at a first preset angle along the end of the horizontal segment of the rectangle, and the second inclined structure segment extends downward at a second preset angle along the end of the first inclined structure segment; the first preset angle is less than the second preset angle.

4. The electrical control box cover production device according to claim 3, characterized in that, The length of the first inclined structural segment is greater than the length of the second inclined structural segment.

5. The electrical control box cover production apparatus according to claim 1, characterized in that, The first section of the overflow groove includes an arc-shaped section extending along the end of the arc-shaped structure of the first outlet and a planar section extending along the end of the horizontal structure of the first outlet.

6. The electrical control box cover production apparatus according to claim 5, characterized in that, The planar segment is inclined upward and expands outward; the planar segment is divided into a first planar segment and a second planar segment along the extension direction; the first planar segment is inclined upward at a first angle relative to the end of the horizontal structure of the first outlet; the second planar segment is inclined upward at a second angle relative to the end of the first planar segment and gradually expands outward, with the width at the end being greater than the width at the beginning; the first angle is less than the second angle.

7. The electrical control box cover production apparatus according to claim 6, characterized in that, The second planar segment has a height difference along the direction perpendicular to the extension, and the height decreases as it moves away from the arc segment.

8. The electrical control box cover production apparatus according to claim 5, characterized in that, The arc segment has an inward-curving structure; the arc segment is divided into a first arc segment, a second arc segment and a third arc segment along the direction perpendicular to the extension direction; the first arc segment extends along the upper end of the arc structure of the first outlet, the second arc segment extends along the middle end of the arc structure of the first outlet and gradually expands outward, and the third arc segment extends along the lower end of the arc structure of the first outlet and gradually curves inward.

9. The electrical control box cover production apparatus according to claim 1, characterized in that, The connection between the first and second sections has a protrusion.

10. The electrical control box cover production apparatus according to claim 9, characterized in that, The protrusion has a quarter-circle arc structure.

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