Mounting cover forming die

Abstract

The utility model discloses a mounting cover forming die which comprises an upper die and a lower die, the bottom end of the upper die is provided with a forming groove, and the top end of the lower die is provided with an annular forming block; the annular forming part is matched with the forming groove to form an annular forming cavity; the ejector pin assembly comprises an ejector pin plate, a plurality of first ejector pins, a plurality of second ejector pins and an ejector pin plate driving part, the ejector pin plate is installed on the lower die and located below the annular forming block, and the ejector pin plate driving part is used for driving the ejector pin plate to move in the height direction of the lower die; the plurality of second thimbles are arranged around the plurality of first thimbles; the first ejector pins are used for penetrating through the annular forming block and stretching into the middle of the forming cavity when the ejector plate moves upwards. And the plurality of second ejector pins extend into the forming cavity from the peripheral edge of the annular forming block after moving upwards on the ejector pin plate. The first ejector pin and the second ejector pin are distributed inside and outside the ejector pin assembly to position the inner ring and the outer ring of the formed annular product.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mounting cover forming mold. Background Art

[0002] At present, lighting lamps, such as ceiling lamps and downlights, generally need to be capped and installed with circular end caps, and the circular end caps have a ring structure and an edge sealing sleeve structure protruding from the outer periphery of the ring structure. During molding, due to the different structures of the inner and outer rings, different structures need to be matched in the mold to support the molding. However, the existing molds mainly mold the same structure inside and outside, and then perform secondary molding after molding to form different structures inside and outside the product, so the molding process is relatively complicated. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model aims to provide a mounting cover forming mold, which can position and support the inner ring and outer ring of the formed annular formed product by distributing a first ejector pin and a second ejector pin inside and outside the ejector pin assembly.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] A mounting cover forming mold, comprising an upper mold and a lower mold, wherein the bottom end of the upper mold is provided with a forming groove, and the top end of the lower mold is provided with a protruding annular forming block; the annular forming block is used to extend into the forming groove when the upper mold and the lower mold are closed, so as to cooperate with the forming groove to form an annular forming cavity;

[0006] An ejector assembly, the ejector assembly comprising an ejector plate, a plurality of first ejectors, a plurality of second ejectors and an ejector plate driving member, the ejector plate being mounted on the lower die and being located below the annular forming block, the ejector plate driving member being used to drive the ejector plate to move along the height direction of the lower die; the bottom ends of the plurality of first ejectors and the plurality of second ejectors are connected to the ejector plate, and the plurality of second ejectors are arranged around the periphery of the plurality of first ejectors; the plurality of first ejectors are used to pass through the annular forming block and extend into the middle of the forming cavity when the ejector plate moves upward; the plurality of second ejectors extend into the forming cavity from the outer circumference of the annular forming block after the ejector plate moves upward; the height of the second ejectors is less than the height of the first ejectors.

[0007] Furthermore, the second ejector includes an ejector rod and an ejector head, the bottom end of the ejector plate is fixedly connected to the ejector plate, and the ejector head is fixedly connected to the top end of the ejector rod; the outer diameter of the ejector head is smaller than the outer diameter of the ejector rod; the top end surface of the ejector rod is surrounded by the outer peripheral edge of the ejector head to form a supporting step surface.

[0008] Furthermore, a plurality of first elastic components are sandwiched between the top end of the ejector plate and the bottom end of the annular forming block; the first elastic components are used to provide a first elastic stress for driving the ejector plate to move downward.

[0009] Furthermore, an injection channel is provided in the middle of the upper mold, and a plurality of first branch channels are provided on the top wall of the molding groove, and the plurality of first branch channels are distributed at intervals around the circumference of the injection channel; the first branch channels extend radially along the molding groove.

[0010] Furthermore, a plurality of second flow diversion channels are provided at the top end of the annular forming block, and the plurality of second flow diversion channels are arranged in one-to-one correspondence with the first flow diversion channels.

[0011] Furthermore, positioning notches are provided on both sides of the annular forming block; inclined ejector blocks are provided on both sides of the lower mold; the inclined ejector blocks are slidably connected to the positioning notches; inclined ejector rods are provided on both sides of the bottom end of the upper mold, and the inclined ejector rods are used to slide and cooperate with the inclined ejector blocks when the upper mold and the lower mold are closed.

[0012] Furthermore, a second elastic component is sandwiched between the inner wall of the positioning notch and the inclined lift block; the second elastic component is used to provide a second elastic stress for driving the inclined lift block away from the positioning notch.

[0013] Furthermore, a cooling pipe is provided on the lower mold, a cooling channel is provided inside the annular forming block, and the cooling channel is connected to the cooling pipe.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The multiple first ejector pins in the middle can support the middle part of the product, and the multiple second ejector pins in the outer peripheral part can support the outer peripheral part of the product, and the height of the second ejector pins can be lower than that of the first ejector pins. In this way, support can be formed at different positions in stages, and structures of different heights inside and outside the product can be formed at the same time without secondary molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the lower mold of the utility model;

[0019] Figure 4 It is a partial structural schematic diagram of the lower mold of the utility model;

[0020] Figure 5It is a schematic diagram of the local structure of the upper mold of the utility model.

[0021] In the figure: 10, upper mold; 11, injection channel; 12, inclined ejector rod; 13, molding groove; 131, first branch channel; 20, lower mold; 21, cooling pipe; 22, ejector plate; 23, first ejector; 24, second ejector; 241, ejector rod; 242, ejector head; 25, first elastic component; 26, inclined ejector block; 27, second elastic component; 28, annular molding block; 281, second branch channel. DETAILED DESCRIPTION

[0022] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0025] like Figure 1-Figure 5 The illustrated mounting cover forming mold includes an upper mold 10, a lower mold 20 and an ejector assembly. The bottom end of the upper mold 10 is provided with a forming groove 13, and the top end of the lower mold 20 is provided with an annular forming block 28, which can protrude from the top end surface of the lower mold 20. The upper mold 10 and the lower mold 20 can move up and down driven by the mold driving member. When the upper mold 10 moves downward, the upper mold 10 and the lower mold 20 are molded together, and when the upper mold 10 moves upward, the upper mold 10 and the lower mold 20 can be molded together. Specifically, when the molds are closed, the annular forming can extend into the forming groove 13 to cooperate with the forming groove 13 to form an annular forming cavity.

[0026] The ejector assembly includes an ejector plate 22, a plurality of first ejectors 23, a plurality of second ejectors 24, and an ejector plate 22 driving member. The ejector plate 22 is installed on the lower mold 20, and the ejector plate 22 can be arranged below the annular forming block 28. The ejector plate 22 driving member can drive the ejector plate 22 to move along the height direction of the lower mold 20, that is, the ejector plate 22 can move up and down.

[0027] In addition, the bottom ends of the plurality of first ejector pins 23 and the plurality of second ejector pins 24 are connected to the ejector plate 22, and the plurality of second ejector pins 24 are arranged around the plurality of first ejector pins 23; the plurality of first ejector pins 23 can pass through the annular forming block 28 and extend into the middle of the forming cavity when the ejector plate 22 moves upward, and the plurality of second ejector pins 24 extend into the forming cavity from the outer periphery of the annular forming block 28 after the ejector plate 22 moves upward; the height of the second ejector pins 24 is less than the height of the first ejector pins 23.

[0028] On the basis of the above structure, when the mounting cover molding mold of the utility model is used, when the product is molded, the upper mold 10 can be driven to move downward by the mold driving member. After the upper mold 10 moves downward, it can be closed with the lower mold 20. During the closing process, the annular molding block 28 protruding from the top of the lower mold 20 can extend into the molding groove 13, and the top surface of the annular molding block 28 cooperates with the inner wall of the top of the molding groove 13 to form the middle part of the molding cavity, and the outer surface of the annular molding block 28 cooperates with the inner peripheral wall of the molding groove 13 to form the outer peripheral edge part of the molding cavity.

[0029] Thereafter, the ejector plate 22 is driven by the ejector plate 22 driving member to move upward, and the first ejector pins 23 and the second ejector pins 24 on the ejector plate 22 both move upward, and the plurality of first ejector pins 23 can pass through the annular molding block 28 and extend into the middle portion of the molding cavity, and the plurality of second ejector pins 24 on the ejector plate 22 can extend into the outer peripheral portion of the molding cavity, so that by introducing the molding fluid into the molding cavity, the plurality of first ejector pins 23 in the middle can support the middle portion of the product, and the plurality of second ejector pins 24 on the outer peripheral portion can support the outer peripheral portion of the product, and the height of the second ejector pins 24 can be lower than the height of the first ejector pins 23, so that support can be formed at different positions in stages, and structures of different heights inside and outside the molding product can be formed at the same time without secondary molding.

[0030] When the product is formed and demolded, the ejector plate 22 needs to be driven by the ejector plate 22 driving member to move downward to eject the product, and then the mold driving member drives the upper mold 10 to move upward to open the mold. It should be noted that the ejector plate 22 driving member and the mold driving member can be selected as a cylinder or oil cylinder in the prior art.

[0031] Furthermore, the second ejector 24 in this embodiment includes an ejector rod 241 and an ejector head 242. The bottom end of the ejector plate 22 is fixed to the ejector plate 22, so that the ejector head 242 can be fixed to the top of the ejector rod 241, and the outer diameter of the ejector head 242 is smaller than the outer diameter of the ejector rod 241; the top end surface of the ejector rod 241 is arranged around the outer periphery of the ejector head 242 to form a supporting step surface. When the second ejector 24 supports the product, the ejector head 242 can extend into the product to form a hole structure, and the supporting step surface of the ejector rod 241 located at the outer periphery of the ejector head 242 can support the bottom surface of the product.

[0032] Furthermore, a plurality of first elastic components 25 may be sandwiched between the top end of the ejector plate 22 and the bottom end of the annular forming block 28, so that when the ejector plate 22 moves upward, the first elastic components 25 may be compressed to provide a resistance to prevent the ejector plate 22 from colliding with the annular forming block 28. When the ejector plate 22 is reset downward, the first elastic components 25 rebound to provide a first elastic stress to drive the ejector plate 22 to move downward, so that the ejector plate 22 is quickly reset.

[0033] Furthermore, an injection channel 11 may be provided in the middle of the upper mold 10, and a plurality of first branch channels 131 may be provided on the top wall of the molding groove 13. The injection channel 11 may pass through the molding groove 13, and the plurality of first branch channels 131 may be distributed at intervals around the circumference of the injection channel 11; the first branch channels 131 extend radially along the molding groove 13, so that the molding liquid introduced by the injection channel 11 may extend radially along the molding groove 13 through the plurality of first branch channels 131, and the molding liquid flows in both the circumferential and radial directions, so that the molding is more uniform.

[0034] Furthermore, a plurality of second branch channels 281 may be provided at the top of the annular molding block 28, and the plurality of second branch channels 281 may be provided one-to-one corresponding to the first branch channels 131, so that the second branch channels 281 may also correspond to the first branch channels 131 to guide the molding liquid to flow, and the flow is more uniform.

[0035] Furthermore, positioning notches are provided on both sides of the annular forming block 28; inclined ejector blocks 26 are provided on both sides of the lower mold 20; the inclined ejector blocks 26 are slidably connected to the positioning notches; inclined ejector rods 12 are provided on both sides of the bottom end of the upper mold 10, and the inclined ejector rods 12 are used to slide with the inclined ejector blocks 26 when the upper mold 10 and the lower mold 20 are closed. In this way, when the molds are closed, the inclined ejector rods 12 of the upper mold 10 can slide with the inclined ejector blocks 26, guiding the inclined ejector blocks 26 to slide inward into the positioning notches, pressing the annular forming blocks 28 on both sides to prevent the annular forming blocks 28 from loosening during the molding process, and the molding structure is more stable.

[0036] Similarly, a second elastic component 27 is clamped between the inner wall of the above-mentioned positioning notch and the inclined lift block 26. When the mold is opened, the inclined lift rod 12 gradually slides upward out of the inclined lift block 26, and the second elastic component 27 can provide a second elastic stress to drive the inclined lift block 26 away from the positioning notch, thereby facilitating the rapid resetting of the inclined lift block 26.

[0037] Furthermore, a cooling pipe 21 is provided on the lower mold 20, and a cooling channel is provided inside the annular molding block 28. The cooling channel is connected to the cooling pipe 21. After the finished product is formed, in order to achieve rapid solidification of the product, the cooling fluid can be introduced into the cooling channel in the annular molding block 28 through the cooling pipe 21, so that the product in the molding cavity is cooled, which facilitates rapid demolding.

[0038] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the protection scope of the claims of the utility model.

Claims

1. A mounting cover forming mold, characterized in that: It comprises an upper die and a lower die, wherein the bottom end of the upper die is provided with a molding groove, and the top end of the lower die is provided with a protruding annular molding block; the annular molding block is used to extend into the molding groove when the upper die and the lower die are closed, so as to cooperate with the molding groove to form an annular molding cavity; An ejector assembly, the ejector assembly comprising an ejector plate, a plurality of first ejectors, a plurality of second ejectors and an ejector plate driving member, the ejector plate being mounted on the lower die and being located below the annular forming block, the ejector plate driving member being used to drive the ejector plate to move along the height direction of the lower die; the bottom ends of the plurality of first ejectors and the plurality of second ejectors are connected to the ejector plate, and the plurality of second ejectors are arranged around the periphery of the plurality of first ejectors; the plurality of first ejectors are used to pass through the annular forming block and extend into the middle of the forming cavity when the ejector plate moves upward; the plurality of second ejectors extend into the forming cavity from the outer circumference of the annular forming block after the ejector plate moves upward; the height of the second ejectors is less than the height of the first ejectors.

2. The mounting cover forming mold according to claim 1, characterized in that: The second ejector includes an ejector rod and an ejector head, the bottom end of the ejector plate is fixedly connected to the ejector plate, and the ejector head is fixedly connected to the top end of the ejector rod; the outer diameter of the ejector head is smaller than the outer diameter of the ejector rod; the top end surface of the ejector rod is surrounded by the outer peripheral edge of the ejector head to form a supporting step surface.

3. The mounting cover forming mold according to claim 1, characterized in that: A plurality of first elastic components are sandwiched between the top end of the ejector plate and the bottom end of the annular forming block; the first elastic components are used to provide a first elastic stress to drive the ejector plate to move downward.

4. The mounting cover forming mold according to claim 1, characterized in that: An injection channel is provided in the middle of the upper mold, and a plurality of first branch channels are provided on the top wall of the molding groove. The plurality of first branch channels are distributed at intervals around the circumference of the injection channel; the first branch channels extend radially along the molding groove.

5. The mounting cover forming mold according to claim 4, characterized in that: A plurality of second flow diversion channels are arranged at the top end of the annular forming block, and the plurality of second flow diversion channels are arranged in one-to-one correspondence with the first flow diversion channels.

6. The mounting cover forming mold according to any one of claims 1 to 5, characterized in that: Positioning notches are provided on both sides of the annular forming block; inclined ejector blocks are provided on both sides of the lower mold; the inclined ejector blocks are slidably connected to the positioning notches; inclined ejector rods are provided on both sides of the bottom end of the upper mold, and the inclined ejector rods are used to slide and cooperate with the inclined ejector blocks when the upper mold and the lower mold are closed.

7. The mounting cover forming mold according to claim 6, characterized in that: A second elastic component is sandwiched between the inner wall of the positioning notch and the inclined lift block; the second elastic component is used to provide a second elastic stress to drive the inclined lift block away from the positioning notch.

8. The mounting cover forming mold according to any one of claims 1 to 5, characterized in that: The lower mold is provided with a cooling pipe, and the annular forming block is provided with a cooling channel inside, and the cooling channel is connected with the cooling pipe.

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