Forming die of electrical box body

Abstract

The utility model relates to the technical field of box body molds, in particular to an electrical box body forming mold which comprises an upper mold assembly and a lower mold assembly, the lower mold assembly comprises a supporting bottom plate and a positioning frame arranged on the periphery of the supporting bottom plate in a surrounding mode, and the supporting bottom plate can elastically move; the upper die assembly comprises an upper die plate, a driving assembly, four pressing block assemblies and four elastic reset mechanisms. The four pressing block assemblies are distributed on the bottom face of the lower die plate in a square frame shape. The pressing block assembly comprises a first pressing block and two second pressing blocks, the two second pressing blocks are slidably connected with the two ends, in the length direction, of the first pressing block correspondingly, and in the downward direction, the two second pressing blocks are gradually close to the sliding direction of the first pressing block; the first pressing blocks are slidably connected with the upper die plate in the length direction perpendicular to the first pressing blocks, and the four elastic reset mechanisms abut against the outer side faces of the four first pressing blocks correspondingly. According to the utility model, after the electrical box body is bent and formed, the electrical box body can be smoothly demoulded.

Description

Technical Field

[0001] This utility model relates to the field of enclosure mold technology, and in particular to a molding mold for an electrical enclosure. Background Technology

[0002] Electrical enclosures are very common in the electrical field, including various distribution boxes, junction boxes, etc. Figure 1 and Figure 2 An example of a common electrical enclosure in the prior art is illustrated. This enclosure includes a base plate 11 and four side plates 12. The base plate 11 and the four side plates 12 are originally a prefabricated, cross-shaped panel. The four side plates 12 are bent and then flipped upwards to form the enclosure structure. However, the side plates 12 of this electrical enclosure have inwardly protruding groove structures 13, which reduce the opening of the enclosure. If a traditional bending mold is used to manufacture this product, there will be a problem with product demolding. Utility Model Content

[0003] This utility model provides a molding die for an electrical enclosure, which allows the electrical enclosure to be easily demolded after bending and forming.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] This utility model provides a molding die for an electrical enclosure, including an upper die assembly and a lower die assembly. The lower die assembly includes a supporting base plate and a positioning frame surrounding the supporting base plate. The supporting base plate is elastically movable relative to the positioning frame in the vertical direction. The upper die assembly includes an upper template, a driving assembly, four pressure block assemblies, and four elastic reset mechanisms. The four pressure block assemblies are arranged in a square shape on the bottom surface of the lower template, and the four pressure block assemblies are respectively located on the four sides of the square. Each pressure block assembly includes a first pressure block and two second pressure blocks. The length direction of the first pressure block is parallel to the extension direction of the side of the frame it is located on. The two second pressing blocks are slidably connected to the two ends of the first pressing block along its length. In the downward direction, the sliding direction of the two second pressing blocks and the first pressing block gradually approaches each other, and the second pressing blocks can slide downward relative to the first pressing block under their own weight. The first pressing block is slidably connected to the upper template along a direction perpendicular to the length of the first pressing block. Four elastic reset mechanisms are respectively arranged on the outside of the four first pressing blocks and abut against the outer surface of the four first pressing blocks. The driving assembly is used to drive the four first pressing blocks to expand outward, and the four elastic reset mechanisms are used to apply an inward elastic force to the four first pressing blocks.

[0006] In some embodiments, the driving assembly includes a guide block and a driver connected to the guide block. The guide block is located inside the frame structure formed by the four pressing block assemblies, and the four sides of the guide block are guide ramps, which slide against the four first pressing blocks respectively. In the downward direction, the guide ramps gradually deflect outward. The driver is used to drive the guide block to move in the vertical direction. When the guide block moves upward, the four guide ramps push the four first pressing blocks to expand outward respectively.

[0007] In some embodiments, the top surface of the first pressing block is provided with a first guide groove, and the bottom surface of the upper template is fixed with a first guide rail. The first guide rail is embedded in the first guide groove and can slide relative to the first pressing block in the first guide groove.

[0008] In some embodiments, the elastic reset mechanism includes a support block and a first spring, the support block being fixed to the bottom surface of the upper template, and the two ends of the first spring abutting against the support block and the first pressure block, respectively.

[0009] In some embodiments, the end face of the first pressing block is provided with a second guide groove extending obliquely downward, and the second pressing block is provided with a second guide rail that slides in cooperation with the second guide groove.

[0010] In some embodiments, a limiting plate is provided on the second guide rail, and a limiting groove is provided on the inner wall of the second guide groove. The limiting plate is inserted into the limiting groove. When the second pressing block slides downward relative to the first pressing block to a preset position, the limiting plate abuts against the inner wall of the limiting groove.

[0011] This utility model has at least the following beneficial effects: During mold closing, the four pressing block assemblies form a frame structure adapted to the supporting base plate to press on the precast plate of the box to be formed. The bottom plate of the box moves downward with the supporting base plate. The connection between the side plate and the bottom plate of the box is blocked by the positioning frame, so the side plate gradually flips upward to bend and form the electrical box. After the product is formed, the drive assembly no longer applies driving force to the four first pressing blocks. Under the action of the four elastic reset mechanisms, the four first pressing blocks retract inward, driving the eight second pressing blocks to retract inward as well. The retracted pressing block assembly is not blocked by the pressing groove structure, so that the pressing block assembly can detach upward from the product, allowing the electrical box to be demolded smoothly. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of an electrical enclosure in the prior art;

[0013] Figure 2 for Figure 1 A cross-sectional view of the electrical enclosure shown;

[0014] Figure 3This is a schematic diagram of the structure of a molding die for an electrical enclosure according to an embodiment of the present invention;

[0015] Figure 4 This is a schematic diagram of the lower mold assembly according to an embodiment of the present invention;

[0016] Figure 5 This is a schematic diagram of the upper mold assembly according to one embodiment of the present invention;

[0017] Figure 6 for Figure 5 A cross-sectional schematic diagram of the upper mold assembly shown;

[0018] Figure 7 This is a schematic diagram of the structure of the second pressing block according to an embodiment of the present invention;

[0019] Figure 8 This is a schematic diagram of the structure of the first pressing block according to an embodiment of the present invention.

[0020] The attached figures are labeled as follows:

[0021] Electrical enclosure 10, bottom plate 11, side plate 12, grooved structure 13;

[0022] Upper mold assembly 100, upper template 110, first pressing block 120, first guide groove 121, second guide groove 122, limiting groove 123, second pressing block 130, second guide rail 131, limiting plate 132, elastic reset mechanism 140, support block 141, first spring 142, guide block 150, guide slope 151, first guide rail 160;

[0023] Lower mold assembly 200, lower template 210, positioning frame 220, supporting base plate 230. Detailed Implementation

[0024] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0025] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intervening element (e.g., the third element) between the element and the other element.

[0027] An embodiment of this utility model provides a molding die for an electrical enclosure, such as... Figure 3 As shown, the assembly includes an upper mold assembly 100 and a lower mold assembly 200, which can be closed and opened under the action of a drive mechanism. During mold closing, the cross-shaped precast plate is pressed down, causing the side plates to bend upwards to form the electrical enclosure 10. During mold opening, the pressing block portion of the upper mold assembly 100 retracts inwards, thus preventing interference with the pressing groove structure on the electrical enclosure 10. The upper mold assembly 100 can then be separated from the product, allowing the electrical enclosure 10 to be easily demolded. The drive mechanism can be a commonly used mold drive mechanism, which will not be described in detail here.

[0028] like Figure 4 As shown, the lower mold assembly includes a lower template 210, a positioning frame 220, and a supporting base plate 230. Both the positioning frame 220 and the supporting base plate 230 are located on the top surface of the upper template 210, with the positioning frame 220 surrounding the supporting base plate 230. The supporting base plate 230 can move elastically relative to the positioning frame 220 in the vertical direction. During molding, a cross-shaped precast plate is placed on the positioning frame 220 and the supporting base plate 230. The connection points between the side panels and the base plate of the electrical enclosure are located at the four edges of the supporting base plate 230. When the pressure block of the upper mold assembly presses down, the portion of the precast plate that forms the base plate is pressed against the supporting base plate 230 by the pressure block and moves downwards with the supporting base plate 230. Meanwhile, the side panels are blocked by the positioning frame 220, causing the four side panels to bend upwards, ultimately forming a shape resembling... Figure 1 The electrical enclosure shown.

[0029] The top surface of the lower template 210 can be provided with a slot that matches the support base plate 230. Multiple second springs can be provided in the slot. The second springs abut against the support base plate 230, so that the support base plate 230 can move elastically in the vertical direction relative to the positioning frame 220.

[0030] like Figure 5As shown, the upper mold assembly includes an upper template 110, a drive assembly, four pressure block assemblies, and four elastic reset mechanisms 140. The four pressure block assemblies are arranged in a rectangular shape on the bottom surface of the lower template. The outer perimeter of the rectangle is adapted to the bottom plate of the electrical enclosure to be formed, and the four pressure block assemblies are located on the four sides of the rectangle. The pressure block assembly includes a first pressure block 120 and two second pressure blocks 130, for a total of four first pressure blocks 120 and eight second pressure blocks 130. The length direction of the first pressure block 120 is parallel to the extension direction of the frame side it is located on. The two second pressure blocks 130 are slidably connected to the two ends of the length direction of the first pressure block 120, so that all eight second pressure blocks 130 are located at the four corners of the rectangular structure. In the downward direction, the sliding direction of the two second pressure blocks 130 gradually approaches that of the first pressure block 120. This arrangement is to keep adjacent second pressure blocks 130 away from each other so as not to interfere. The second pressing block 130 can slide downward relative to the first pressing block 120 under its own weight. Therefore, no driving force needs to be applied to the second pressing block 130, and it can adaptively move with the first pressing block 120. The first pressing block 120 is slidably connected to the upper template 110 along a direction perpendicular to the length of the first pressing block 120. Four elastic reset mechanisms 140 are respectively disposed on the outer sides of the four first pressing blocks 120 and abut against the outer surfaces of the four first pressing blocks 120. The driving assembly is used to drive the four first pressing blocks 120 to expand outward, and the four elastic reset mechanisms 140 are used to apply an inward elastic force to the four first pressing blocks 120.

[0031] During mold closing, the second pressure block 130 slides downward relative to the first pressure block 120 under its own weight, thus the second pressure block 130 contacts the precast plate first. The first pressure block 120 moves downward, and the second pressure block 130 is blocked, moving upward relative to the first pressure block 120. The drive assembly applies a driving force to the four first pressure blocks 120, which enables the first pressure blocks 120 to overcome the force of the elastic reset mechanism 140, thus the four first pressure blocks 120 expand outward. As the entire upper mold assembly 100 moves further downward, the second pressure block 130 moves relative to the first pressure block 120 to the maximum stroke position above. The second pressure block 130 can no longer move upward relative to the first pressure block 120. At this time, the first pressure block 120 and the second pressure block 130 enclose to form a square frame structure. The first pressure block 120 and the second pressure block 130 press together on the bottom plate of the precast plate and press down further, causing the side plate to flip upward to form an electrical enclosure.

[0032] During mold opening, the upper mold assembly 100 moves upward, the first pressure block 120 moves upward, and the second pressure block 130 slides downward relative to the first pressure block 120 under its own weight, causing adjacent second pressure blocks 130 to separate from each other. The drive assembly no longer applies driving force to the four first pressure blocks 120. Under the action of the four elastic reset mechanisms 140, the four first pressure blocks 120 retract inward, causing the eight second pressure blocks 130 to also retract inward. Figure 2 As shown, in the height direction, there is still a distance between the base plate 11 and the pressure groove structure 13, which allows the pressure block to retract during its upward movement. During the process of the first pressure block 120 moving from the base plate 11 to the pressure groove structure 13, both the first pressure block 120 and the second pressure block 130 retract inward. Therefore, when the pressure block assembly moves to the pressure groove structure, the pressure groove structure does not obstruct the pressure block assembly, and the pressure block assembly can be smoothly released from the opening of the electrical enclosure, allowing the electrical enclosure to be demolded smoothly, thus realizing the molding of the electrical control enclosure through a mold.

[0033] In some embodiments, such as Figure 5 and Figure 6 As shown, the drive assembly includes a guide block 150 and a driver connected to the guide block 150. The driver may include a hydraulic cylinder or other drive mechanism. The guide block 150 is located inside the frame structure formed by the four pressure block assemblies, and the four sides of the guide block 150 are guide ramps 151, which slide against the four first pressure blocks 120 respectively. In the downward direction, the guide ramps 151 gradually deflect outward. The driver is used to drive the guide block 150 to move vertically. When the guide block 150 moves upward, the four guide ramps 151 push the four first pressure blocks 150 to expand outward. When the driver drives the guide block 150 to move vertically downward, the driving force of the four guide ramps 151 on the four first pressure blocks 150 disappears. Under the elastic force of the elastic reset mechanism, the four first pressure blocks 150 tightly abut against the four guide ramps 151, and thus the four first pressure blocks 150 contract inward.

[0034] In some embodiments, such as Figure 5-8 As shown, the top surface of the first pressing block 120 is provided with a first guide groove 121, and the bottom surface of the upper template 110 is fixed with a first guide rail 160. The first guide rail 160 is embedded in the first guide groove 121 and can slide relative to the first pressing block 120 in the first guide groove 121. Through the sliding cooperation between the first guide rail 160 and the first guide groove 121, the first pressing block 120 and the upper template 110 are slidably connected along the length direction perpendicular to the first pressing block 120. Therefore, the first pressing block 120 can shrink or expand outward.

[0035] In some embodiments, such as Figure 5-8As shown, the elastic reset mechanism 140 includes a support block 141 and a first spring 142. The support block 141 is fixed to the bottom surface of the upper template 110. The two ends of the first spring 142 abut against the support block 141 and the first pressure block 120 respectively, so as to apply an elastic reset force to the first pressure block 120.

[0036] In some embodiments, such as Figure 5-8 As shown, the end face of the first pressing block 120 is provided with a second guide groove 122 extending obliquely downward, and the second pressing block 130 is provided with a second guide rail 131 that slides in cooperation with the second guide groove 122. The second guide rail 131 is embedded in the second guide groove 122, so that the second pressing block 130 can slide obliquely downward relative to the first pressing block 120. This arrangement is to allow two adjacent second pressing blocks 130 to move away from each other after the second pressing block 130 slides obliquely downward. This provides space for the first pressing block 120 to drive the second pressing block 130 to retract inward. When the second pressing block 130 slides downward relative to the first pressing block 120 to the lowest stroke position under its own weight, the two second pressing blocks 130 that were originally abutting each other will separate by a distance. When the first pressing block 120 drives the second pressing block 130 to retract inward, the second pressing blocks 130 at both ends of the first pressing block 120 will not contact the adjacent second pressing blocks 130, thereby avoiding interference. Both the first pressing block 120 and the second pressing block 130 can retract inward.

[0037] Furthermore, a limiting plate 132 is provided on the second guide rail 131, and a limiting groove 123 is provided on the inner wall of the second guide groove 122. The limiting plate 132 is embedded in the limiting groove 123. When the second pressing block 130 slides downward relative to the first pressing block 120 to a preset position, the limiting plate 132 abuts against the inner wall of the limiting groove 123, so that the second guide rail 131 will not detach from the second guide groove 122, and the second pressing block 130 and the first pressing block 120 can maintain a sliding connection.

[0038] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should understand that the foregoing description of various embodiments of the present invention is for illustrative purposes only, and not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. A molding die for an electrical enclosure, characterized in that: The system includes an upper mold assembly and a lower mold assembly. The lower mold assembly includes a supporting base plate and a positioning frame surrounding the supporting base plate. The supporting base plate is elastically movable relative to the positioning frame in the vertical direction. The upper mold assembly includes an upper template, a driving assembly, four pressure block assemblies, and four elastic reset mechanisms. The four pressure block assemblies are arranged in a square shape on the bottom surface of the lower template, and each pressure block assembly is located on one of the four sides of the square. Each pressure block assembly includes a first pressure block and two second pressure blocks. The length direction of the first pressure block is parallel to the extension direction of the side of the frame it is located on, and the two second pressure blocks are respectively aligned with the side of the frame. The two ends of the first pressure block are slidably connected along its length. In the downward direction, the sliding direction of the two second pressure blocks gradually approaches that of the first pressure block. The second pressure blocks can slide downward relative to the first pressure block under their own weight. The first pressure block and the upper template are slidably connected along the length direction perpendicular to the first pressure block. Four elastic reset mechanisms are respectively arranged on the outside of the four first pressure blocks and abut against the outer surface of the four first pressure blocks. The driving assembly is used to drive the four first pressure blocks to expand outward, and the four elastic reset mechanisms are respectively used to apply an inward elastic force to the four first pressure blocks.

2. The molding die for the electrical enclosure according to claim 1, characterized in that: The driving assembly includes a guide block and a driver connected to the guide block. The guide block is located inside the frame structure formed by the four pressing block assemblies, and the four sides of the guide block are guide ramps, which slide against the four first pressing blocks respectively. In the downward direction, the guide ramps gradually deflect outward. The driver is used to drive the guide block to move in the vertical direction. When the guide block moves upward, the four guide ramps push the four first pressing blocks to expand outward respectively.

3. The molding die for the electrical enclosure according to claim 1, characterized in that: The top surface of the first pressing block is provided with a first guide groove, and the bottom surface of the upper template is fixed with a first guide rail. The first guide rail is embedded in the first guide groove and can slide relative to the first pressing block in the first guide groove.

4. The molding die for the electrical enclosure according to claim 1, characterized in that: The elastic reset mechanism includes a support block and a first spring. The support block is fixed to the bottom surface of the upper template, and the two ends of the first spring abut against the support block and the first pressure block, respectively.

5. The molding die for the electrical enclosure according to claim 1, characterized in that: The end face of the first pressing block is provided with a second guide groove extending obliquely downward, and the second pressing block is provided with a second guide rail that slides in cooperation with the second guide groove.

6. The molding die for the electrical enclosure according to claim 5, characterized in that: A limiting plate is provided on the second guide rail, and a limiting groove is provided on the inner wall of the second guide groove. The limiting plate is embedded in the limiting groove. When the second pressing block slides downward relative to the first pressing block to a preset position, the limiting plate abuts against the inner wall of the limiting groove.

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