A control box mold for easy replacement of ejector pins

Abstract

This utility model belongs to the field of mold technology, specifically relating to a control box mold for easy ejector pin replacement. It includes an upper mold base, a lower mold base, and mold feet. An upper mold and a lower mold are respectively mounted on the upper and lower mold bases. An ejector pin mechanism is arranged between the mold feet below the lower mold base. The ejector pin mechanism includes an ejector pin, a face plate, and a base plate. The lower surface of the face plate has countersunk holes for mounting the ejector pin. The base plate includes a fixed plate and a sliding plate. The fixed plate has a maintenance through hole penetrating the upper and lower surfaces, and a sliding groove is also provided on the fixed plate. The sliding plate forms a drawer-type structure with the fixed plate through the sliding groove. This utility model's control box mold for easy ejector pin replacement allows for quick ejector pin removal and installation without disassembling the entire mold when maintenance or replacement of the ejector pin is required. Only the sliding plate needs to be removed, exposing the lower end of the ejector pin, thus improving the efficiency of maintenance work.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a control box mold that facilitates the replacement of ejector pins. Background Technology

[0002] Currently, most control box housings are formed by one-piece die casting: molten metal is injected into the cavity through the upper mold gate, the mold is closed and cooled, and then the ejector mechanism in the lower mold ejects the casting, completing rapid demolding. However, the ejector mechanism, subjected to high-frequency reciprocating motion, is prone to bending, breakage, wear, or uneven ejection, leading to product deformation, whitening, or even cracking. This affects demolding quality and reduces production efficiency, requiring frequent shutdowns for maintenance or replacement. The traditional ejector replacement process is lengthy: first, the entire machine is removed from the mold, then the rear mold fixing plate and ejector plate are removed sequentially, and the connecting screws of the upper and lower ejector plates are loosened before the failed ejector pin can be removed; after installing a new ejector pin, it is then reversed, reassembled, and re-adjusted. The entire process is time-consuming and labor-intensive, and the injection molding machine is idle for extended periods, reducing equipment utilization and increasing additional energy consumption. Therefore, shortening ejector replacement time and improving maintenance efficiency are key to reducing production costs and ensuring economic benefits. In view of this, this application aims to provide a control box mold that facilitates ejector pin replacement. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a control box mold that facilitates the replacement of ejector pins.

[0004] The technical solution of this utility model is: a control box mold for easy replacement of ejector pins, including an upper mold frame, a lower mold frame, and mold feet. An upper mold and a lower mold are respectively provided on the upper mold frame and the lower mold frame, and the upper mold and the lower mold cooperate to form a cavity. An ejector pin mechanism is provided between the mold feet below the lower mold frame. The ejector pin mechanism includes an ejector pin, a panel, and a base plate. The lower surface of the panel is provided with a countersunk hole for installing the ejector pin. The base plate includes a fixed plate and a sliding plate. The fixed plate is provided with a maintenance through hole penetrating the upper surface and the lower surface. A sliding groove is also provided on the fixed plate. The sliding plate forms a drawer-type structure with the fixed plate through the sliding groove.

[0005] Furthermore, after the ejector mechanism is assembled, the upper surface of the sliding plate is flush with the upper surface of the fixed plate, and both are in close contact with the lower surface of the panel, thereby ensuring the fixed installation of the ejector.

[0006] Furthermore, protrusions that mate with the sliding groove are provided on both sides of the sliding plate. The drawer-like relative movement between the sliding plate and the fixed plate is achieved through the cooperation of the protrusions and the sliding groove.

[0007] Furthermore, the size of the sliding plate can completely cover the maintenance through hole.

[0008] Furthermore, the countersunk holes on the panel are positioned to correspond to the maintenance through holes on the fixed plate. This allows the countersunk holes to be exposed after the sliding plate is pulled out, enabling the ejector pins to be replaced or maintained through the maintenance through holes.

[0009] Furthermore, the fixing plate is provided with a first fixing hole and a second fixing hole, wherein the first fixing hole is used to connect with the panel and the second fixing hole is used to fix and connect with the sliding plate.

[0010] Furthermore, the sliding plate is provided with a third fixing hole for engaging with the second fixing hole on the fixing plate.

[0011] Furthermore, the sliding plate has lifting holes on its side for easy hoisting.

[0012] Furthermore, the upper surface of the sliding plate has a chamfer on the side away from the lifting hole. The purpose of the chamfer is to reduce the obstruction of the lower end of the ejector pin's mounting structure when the sliding plate is inserted into the fixing plate. That is, if part of the ejector pin's mounting structure slightly exceeds the panel plane, the sliding plate can push aside the mounting structure and pass through smoothly under the action of the chamfer.

[0013] Compared with the prior art, the advantages of this utility model are as follows: The control box mold of this utility model, which facilitates the replacement of ejector pins, is designed with a drawer-type structure in the base plate of the ejector pin mechanism. This way, when the ejector pin needs to be maintained or replaced, it is not necessary to disassemble the entire mold. Only the sliding plate needs to be removed, and the lower end of the ejector pin can be exposed, thereby enabling quick assembly and disassembly of the ejector pin. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the ejector mechanism of Embodiment 1 of this utility model; Figure 3 This is an exploded view of the ejector mechanism of Embodiment 1 of this utility model; Figure 4 This is a three-dimensional schematic diagram of the fixing plate in Embodiment 1 of this utility model; Figure 5 This is a cross-sectional schematic diagram of the fixing plate in Embodiment 1 of this utility model; Figure 6 This is a three-dimensional schematic diagram of the sliding plate in Embodiment 1 of this utility model; In the diagram: 1. Upper mold frame; 2. Lower mold frame; 3. Mold foot; 4. Panel; 5. Base plate; 51. Fixing plate; 511. Maintenance through hole; 512. Sliding groove; 513. Second fixing hole; 514. First fixing hole; 52. Sliding plate; 521. Lifting hole; 522. Protrusion; 523. Chamfer; 524. Third fixing hole; 6. Ejector pin. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to specific embodiments. Methods or functional components not specifically described in the embodiments are all prior art. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Example

[0016] like Figure 1-6 As shown, this embodiment is a control box mold for easy replacement of ejector pins, including an upper mold frame 1, a lower mold frame 2, and mold feet 3. The upper mold frame 1 and lower mold frame 2 are respectively provided with an upper mold and a lower mold, which, when mated, form a cavity. An ejector pin 6 mechanism is provided between the mold feet 3 below the lower mold frame 2. The ejector pin 6 mechanism includes an ejector pin 6, a panel 4, and a base plate 5. The lower surface of the panel 4 is provided with countersunk holes for installing the ejector pin 6. The base plate 5 includes a fixed plate 51 and a sliding plate 52. The fixed plate 51 is provided with a maintenance through hole 511 penetrating the upper and lower surfaces, and a sliding groove 512 is also provided on the fixed plate 51. The sliding plate 52 forms a drawer-type structure with the fixed plate 51 through the sliding groove 512. After the ejector pin 6 mechanism is assembled, the upper surface of the sliding plate 52 is flush with the upper surface of the fixed plate 51, and both are in close contact with the lower surface of the panel 4, thereby ensuring the fixed installation of the ejector pin 6. The sliding plate 52 has protrusions 522 on both sides that mate with the sliding groove 512. The protrusions 522 and the sliding groove 512 work together to allow for drawer-like relative movement between the sliding plate 52 and the fixed plate 51. The sliding plate 52 is large enough to completely cover the maintenance through hole 511. The countersunk holes on the panel 4 correspond to the positions of the maintenance through holes 511 on the fixed plate 51. This allows the countersunk holes to be exposed after the sliding plate 52 is pulled out, enabling replacement or maintenance of the ejector pin 6 through the maintenance through hole 511.

[0017] The fixing plate 51 is provided with a first fixing hole 514 and a second fixing hole 513, wherein the first fixing hole 514 is used to connect with the panel 4, and the second fixing hole 513 is used to fix and connect with the sliding plate 52. The sliding plate 52 is provided with a third fixing hole 524 for engaging with the second fixing hole 513 on the fixing plate 51. The side of the sliding plate 52 is provided with a lifting hole 521 for easy hoisting.

[0018] In this embodiment, the upper surface of the sliding plate 52 is provided with a chamfer 523 on the side away from the lifting hole 521. The purpose of providing the chamfer 523 is to reduce the obstruction of the lower end mounting structure of the ejector pin 6 when the sliding plate 52 is inserted into the fixing plate 51. That is, if part of the mounting structure at the lower end of the ejector pin 6 slightly exceeds the plane of the panel 4, the sliding plate 52 can also push aside the mounting structure under the action of the chamfer 523 and pass through smoothly.

[0019] In this embodiment, the control box mold that facilitates the replacement of ejector pin 6 allows for easy maintenance of ejector pin 6. When the ejector pin 6 needs to be repaired, the entire slot can be placed horizontally so that the side of the sliding plate 52 with the lifting hole 521 faces upward or to the left or right. Then, the screws at the second fixing hole 513 can be loosened, and the sliding plate 52 can be pulled out, thereby exposing the lower end of the ejector pin 6 located on the panel 4. Workers can then perform maintenance and replacement operations on the ejector pin 6. The entire process does not require disassembling the panel 4 and the base plate 5, saving disassembly time and improving maintenance efficiency.

[0020] The above are only some embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various combinations and modifications of the aforementioned technical features. Any improvements, modifications, equivalent substitutions, or applications of the structure or method of the present utility model to other fields to achieve the same effect without departing from the spirit and scope of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A control box mold for easy ejector pin replacement, comprising an upper mold base, a lower mold base, and mold feet, wherein an upper mold and a lower mold are respectively disposed on the upper mold base and the lower mold base, and the upper mold and the lower mold cooperate to form a cavity; an ejector pin mechanism is disposed between the mold feet below the lower mold base, characterized in that: The ejector mechanism includes an ejector pin, a panel, and a base plate; the lower surface of the panel is provided with a countersunk hole for installing the ejector pin; the base plate includes a fixed plate and a sliding plate, the fixed plate is provided with a maintenance through hole penetrating the upper and lower surfaces, and a sliding groove is also provided on the fixed plate, the sliding plate and the fixed plate forming a drawer-type structure through the sliding groove.

2. The control box mold for easy ejector pin replacement according to claim 1, characterized in that: After the ejector mechanism is assembled, the upper surface of the sliding plate is flush with the upper surface of the fixed plate, and both are in close contact with the lower surface of the panel.

3. The control box mold for easy ejector pin replacement according to claim 1, characterized in that: The sliding plate has protrusions on both sides that cooperate with the sliding groove.

4. The control box mold for easy ejector pin replacement according to claim 1, characterized in that: The size of the sliding plate completely covers the maintenance through hole.

5. The control box mold for easy replacement of ejector pins according to claim 1, characterized in that: The countersunk holes on the panel are located in a manner that corresponds to the maintenance through holes on the mounting plate.

6. The control box mold for easy replacement of ejector pins according to claim 1, characterized in that: The fixing plate is provided with a first fixing hole and a second fixing hole, wherein the first fixing hole is used to connect with the panel and the second fixing hole is used to fix and connect with the sliding plate.

7. The control box mold for easy replacement of ejector pins according to claim 6, characterized in that: The sliding plate is provided with a third fixing hole for engaging with the second fixing hole on the fixing plate.

8. The control box mold for easy replacement of ejector pins according to claim 1, characterized in that: The sliding plate has lifting holes on its side for easy hoisting.

9. The control box mold for easy replacement of ejector pins according to claim 1, characterized in that: The upper surface of the sliding plate has a chamfer on the side away from the lifting hole.

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