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CN-122008486-A - In-mold injection mold and process for continuous mosaic

CN122008486ACN 122008486 ACN122008486 ACN 122008486ACN-122008486-A

Abstract

The invention relates to and discloses a continuous mosaic in-mold injection mold and a process. Belongs to the technical field of loudspeaker accessory injection molds, and comprises an upper module, a lower module, a jacking mechanism and a coil pulling mechanism. The injection molding area and the belt body positioning area of the lower module are provided with mounting grooves, and jacking columns are arranged in the grooves. The jacking mechanism drives the material passing block to vertically lift through the driving body and the inclined plane mechanism, so that the jacking column of the lower module is accurately jacked into or separated from the first positioning hole and the second positioning hole on the material belt. The technological process includes the steps of material belt passing, jacking, positioning, injection molding, separating, automatic step, etc. According to the invention, through the precise mechanical interlocking of the jacking column and the positioning hole, the problem of high defective rate caused by easy deviation and overturning of the mosaic with extremely small size under injection molding impact is effectively solved, and the positioning precision and the production automation degree are remarkably improved.

Inventors

  • LIU JIANWU
  • YOU YUTAO
  • ZHENG JIAXIANG

Assignees

  • 厦门东声电子有限公司

Dates

Publication Date
20260512
Application Date
20260401

Claims (10)

  1. 1. The continuous embedded in-mold injection mold is used for injection molding of a material belt, the material belt comprises a strip belt and a plurality of embedded bodies connected to the strip belt, the strip belt is provided with first positioning holes arranged at intervals, and one side of the embedded body, which is close to the strip belt, is provided with second positioning holes, and is characterized by comprising an upper module, a lower module, a jacking mechanism and a rolling mechanism; The lower die set comprises a lower die holder, a lower die plate is arranged in the middle of the lower die holder, an injection molding area and a belt positioning area are formed on the lower die plate, mounting grooves are formed in the injection molding area and the belt positioning area, and a jack post is arranged in the mounting grooves; The jacking mechanism comprises two material passing blocks and two jacking bodies, wherein the two material passing blocks are respectively arranged in the two mounting gaps, material passing holes are formed in the material passing blocks, and a material belt sequentially passes through the material passing holes of one material passing block, the injection molding area and the material passing holes of the other material passing block; The pulling and rolling mechanism is used for pulling the material belt to shift when the jacking column is separated from the first positioning hole and the second positioning hole.
  2. 2. The injection mold for a continuous mosaic mold according to claim 1, wherein a connecting plate is formed between the two material passing blocks at a position corresponding to the material head, the connecting plate is provided in the belt positioning area, and a corresponding hole corresponding to the installation groove in the belt positioning area is formed in the connecting plate.
  3. 3. The continuous in-mold insert injection mold of claim 2, wherein said post end has a chamfer at an outer edge thereof.
  4. 4. The injection mold of claim 2, wherein a platen is disposed at an upper end of the middle portion of the connecting plate, and a gap is formed between the platen and the connecting plate.
  5. 5. The continuous mosaic in-mold injection mold of claim 2, wherein the material passing block comprises a top cover and a base, the bases of the two material passing blocks are connected through a connecting plate, and the top cover is detachably connected with the base.
  6. 6. The injection mold in the continuous mosaic mold of claim 1, wherein the jacking body comprises a lateral jacking block, a driving body and a poking block, the lateral jacking block is arranged on the outward side of the material passing block, the poking block is rotatably connected to the side wall of the lower mold base and is positioned at the bottom end of the lateral jacking block side surface, one surface of the lateral jacking block, facing the poking block, is a first inclined surface, the poking block, facing the lateral jacking block, is a second inclined surface, the first inclined surface is matched with the second inclined surface, and the driving body drives the poking block to rotatably control the lateral jacking block to ascend and descend.
  7. 7. The injection mold in the continuous mosaic mold of claim 6, wherein the jacking body further comprises a mounting limiting block, the mounting limiting block is mounted on the side surface of the lower mold base, a limiting groove penetrating through the upper surface and the lower surface is formed in the outward side of the mounting limiting block, the poking block is located in the limiting groove, and the lateral propping block extends into the limiting groove.
  8. 8. The continuous in-mold insert injection mold of claim 1, wherein the injection molding area comprises two groups of injection molding modules, each group of injection molding modules comprises three injection molding stations, each injection molding station is provided with three spacing limiting spacer blocks near the positioning area of the belt body, and the upper edge line of the facing surface of each limiting spacer block is provided with a chamfer.
  9. 9. The continuous mosaic in-mold injection mold according to claim 1, wherein the upper mold comprises an upper mold base, an upper mold plate is arranged on the lower surface of the upper mold base, and the upper mold plate corresponds to the lower mold plate.
  10. 10. A continuous mosaic in-mold injection molding process, which is characterized in that the continuous mosaic in-mold injection molding process is carried out by adopting the continuous mosaic in-mold injection mold as set forth in any one of claims 1 to 9, and comprises the following steps: s1, a material belt penetrates through a material passing hole, an injection molding area, a belt body positioning area and another material passing hole, and a first positioning hole and a second positioning hole on the material belt correspond to mounting grooves formed in the injection molding area and the belt body positioning area respectively; S2, the jacking body moves downwards to drive the material belt to move downwards, so that the jacking columns jack into the first positioning holes and the second positioning holes, the material belt is positioned, and the upper die set and the lower die set are matched for injection molding; s3, after injection molding is finished, the upper module moves upwards, the jacking body moves upwards, the material belt is driven to move upwards, the jacking column is separated from the first positioning hole and the second positioning hole, and the material belt is pulled by the pulling and rolling mechanism to move forwards for a specified distance, so that the steps are repeated.

Description

In-mold injection mold and process for continuous mosaic Technical Field The invention belongs to the technical field of injection molds, and particularly relates to a continuous inlay in-mold injection mold and a process. Background Along with the development of electronic products in the direction of light weight, miniaturization and high integration, the requirements for the precision of the internal components and the appearance decoration parts of sound equipment (such as bluetooth speakers, intelligent headphones and the like) are increasingly increased. The inlay is used as a common structural member in acoustic equipment and is usually fixed on an acoustic inner substrate through an in-mold injection molding process so as to realize specific acoustic performance and mechanical strength. In the existing acoustic mosaic injection molding production process, the following technical problems mainly exist: 1. Positioning difficulties are caused by the small size, which is typically very small due to the limited space inside the sound. In the in-mold injection process, it is necessary to place the inlay in a prescribed position in the mold cavity in advance. For microminiature inlays, continuous injection molding is extremely easy to generate deviation in the pulling and rolling process. 2. Displacement caused by injection impulse, namely, when in-mold injection, molten plastic fluid is injected into a mold cavity at high pressure and high speed. Because the inlay is light in weight and small in stress area, the inlay is extremely easy to deviate, turn over or misplace under the impact of a melt. 3. The defective rate is high, if the mosaic is positioned inaccurately or displaced in the die cavity, the formed product is directly exposed and white, the encapsulation is not tight, and the structural interference or the appearance defect occurs. For very small-sized parts, such offset is often difficult to find immediately during the production process, resulting in high-volume production of defective products, severely affecting production efficiency and increasing production costs. In view of this, the generation of the scheme is provided. Disclosure of Invention In view of the defects in the prior art, the technical problem to be solved by the invention is to provide a continuous mosaic in-mold injection mold and a process, which can accurately position a material belt during in-mold injection. In order to solve the technical problems, the technical scheme adopted by the invention is that the continuous inlay in-mold injection mold is used for material belt injection molding, the material belt comprises a strip belt and a plurality of inlays connected on the strip belt, the strip belt is provided with first positioning holes arranged at intervals, and one side of the inlay close to the strip belt is provided with second positioning holes, and the inlay comprises an upper module, a lower module, a jacking mechanism and a rolling mechanism; The lower die set comprises a lower die holder, a lower die plate is arranged in the middle of the lower die holder, an injection molding area and a belt positioning area are formed on the lower die plate, mounting grooves are formed in the injection molding area and the belt positioning area, and a jack post is arranged in the mounting grooves; The jacking mechanism comprises two material passing blocks and two jacking bodies, wherein the two material passing blocks are respectively arranged in the two mounting gaps, material passing holes are formed in the material passing blocks, and a material belt sequentially passes through the material passing holes of one material passing block, the injection molding area and the material passing holes of the other material passing block; The pulling and rolling mechanism is used for pulling the material belt to shift when the jacking column is separated from the first positioning hole and the second positioning hole. Further, a connecting plate is formed between the two passing blocks and corresponds to the stub bar, the connecting plate is arranged in the belt body positioning area, and corresponding holes corresponding to the mounting grooves in the belt body positioning area are formed in the connecting plate. Further, the method comprises the steps of, the outer edge of the end face of the top column is provided with a chamfer. Further, the upper end at the middle part of the connecting plate is provided with a pressing plate, and a gap is formed between the pressing plate and the connecting plate. Further, the material passing block comprises a top cover and a base, the base is connected between the two material passing blocks through a connecting plate, and the top cover is detachably connected with the base. Further, the jacking body includes the side direction and supports kicking block, the drive body and stir the piece, the side direction is supported the kicking block and is installed and cross the piece outside one s