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CN-224224449-U - Oblique ejection die

CN224224449UCN 224224449 UCN224224449 UCN 224224449UCN-224224449-U

Abstract

The utility model discloses an inclined top die, which relates to the technical field of injection molding and comprises a front die, a rear die and an ejection mechanism, wherein the rear die is arranged opposite to the front die, a cavity is formed between the front die and the rear die, the ejection mechanism comprises a first inclined top and a second inclined top, a first supporting surface is formed on the first inclined top, a second supporting surface is formed on the second inclined top, and the first supporting surface and the second supporting surface are both used for contacting an injection molding piece in the cavity. In the injection molding state, the sizing material is injected into the cavity to form an injection molding piece, the first propping surface and the second propping surface are both used for contacting the injection molding piece in the cavity, the first propping surface and the second propping surface are mutually connected, the demolding of the back-off can be realized under the condition that the two back-off distances of the injection molding piece are relatively close, the contact area between the ejection mechanism and the injection molding piece can be increased, the surface of the formed injection molding piece is relatively consistent, and the movement track of the first inclined roof and the movement track of the second inclined roof can be realized under the condition that the two back-off distances of the injection molding piece are relatively close.

Inventors

  • LONG TIANWEI

Assignees

  • 广州维思车用部件有限公司

Dates

Publication Date
20260512
Application Date
20250422

Claims (10)

  1. 1. A pitched roof die, comprising: A front mold; The rear die is arranged opposite to the front die, and a cavity is formed between the front die and the rear die; The ejection mechanism comprises a first inclined top and a second inclined top, a first supporting surface is formed on the first inclined top, a second supporting surface is formed on the second inclined top, and the first supporting surface and the second supporting surface are both used for contacting an injection molding piece in the cavity; In the injection molding state, the first propping surface and the second propping surface are mutually connected, the inclination angle of the first inclined top relative to the rear mold and the inclination angle of the second inclined top relative to the rear mold are different, in the demolding state, the first propping surface and the second propping surface are separated from each other, and the first propping surface and the second propping surface are both separated from the injection molding piece.
  2. 2. The pitched roof mold of claim 1, wherein a first abutment surface is formed on the first pitched roof and a second abutment surface is formed on the second pitched roof, wherein the first abutment surface and the second abutment surface abut in the injection state, and wherein the first abutment surface slides on the second abutment surface and gradually moves away from the second abutment surface during the transition from the injection state to the release state.
  3. 3. The pitched roof mold of claim 1, wherein the angle of inclination of the first pitched roof with respect to the rear mold is less than the angle of inclination of the second pitched roof with respect to the rear mold.
  4. 4. A pitched roof mold according to claim 3, wherein the first pitched roof is inclined at an angle of 7 degrees with respect to the rear mold, and the second pitched roof is inclined at an angle of 12 degrees with respect to the rear mold.
  5. 5. The pitched roof die according to claim 3, wherein the first pitched roof and the second pitched roof are adjacently arranged, a first forming groove for accommodating a first back-off of the injection molding piece is formed in the first propping surface, a second forming groove for accommodating a second back-off of the injection molding piece is formed in the second propping surface, and a moving speed of the first pitched roof in a depth direction of the first forming groove is smaller than a moving speed of the second pitched roof in a depth direction of the second forming groove in a process of switching from the injection molding state to the demolding state.
  6. 6. The pitched roof mold of any one of claims 1 to 5, further comprising a driving member disposed on the rear mold, the driving member configured to drive the first pitched roof and the second pitched roof to move synchronously.
  7. 7. The tilt head mold of claim 6, wherein the drive member comprises an ejector portion and a drive portion, wherein an output portion of the drive portion is coupled to the ejector portion, and wherein the first tilt head and the second tilt head are rotatably coupled to the ejector portion.
  8. 8. The pitched roof mold of claim 7, wherein the ejection portion is provided with a first fixing base and a second fixing base, the first pitched roof is rotatably connected to the first fixing base, and the second pitched roof is rotatably connected to the second fixing base.
  9. 9. The pitched roof mold according to any one of claims 1 to 5, wherein the rear mold is provided with a first guide block and a second guide block, the first guide block is provided with a first chute, the second guide block is provided with a second chute, the first pitched roof is slidably disposed on the first chute, the second pitched roof is slidably disposed on the second chute, and the inclinations of the first chute and the second chute are different.
  10. 10. The pitched roof mold according to any one of claims 1 to 5, wherein two cavities are provided, two ejection mechanisms are provided, and the cavities and the ejection mechanisms are in one-to-one correspondence.

Description

Oblique ejection die Technical Field The utility model belongs to the technical field of injection molding, and particularly relates to an inclined top die. Background Injection molding refers to a process in which a molten material is injected into a mold cavity, and the material is cooled to obtain a product. Generally, the mold comprises a front mold and a rear mold, and the front mold and the rear mold are aligned and matched to form a cavity. The Chinese patent with the publication number of CN111958914U discloses a double-inclined-roof die, two barb forming grooves on the double-inclined-roof die are correspondingly arranged on the opposite sides of two inclined roofs, after an upper die plate and a lower die plate are opened, a driving mechanism drives two jacking columns to move upwards, the upper ends of the two jacking columns correspondingly drive the two inclined roofs to slide along the inclined grooves, as the interval between the two inclined grooves is gradually increased from top to bottom, the upper ends of the two inclined roofs are mutually close in the horizontal direction, namely, the two barb grooves are mutually close in the horizontal direction, thereby realizing the demolding of the barb forming grooves, avoiding the interference in the workpiece taking-out process, and simultaneously, the two inclined roofs jack up the workpiece upwards, thereby facilitating the workpiece taking-down. Although the double-pitched roof mold can jack up an injection molding piece with two back-ups, if the distance between the two back-ups of the injection molding piece is relatively short, the two pitched roof of the double-pitched roof mold is easy to interfere. Disclosure of utility model The utility model aims to provide an inclined ejection die, which can realize that the movement tracks of a first inclined ejection and a second inclined ejection are not interfered with each other under the condition that two back-off distances of an injection molding piece are relatively close. The technical scheme adopted for solving the technical problems is as follows: The embodiment of the utility model provides an inclined top die, which comprises: A front mold; The rear die is arranged opposite to the front die, and a cavity is formed between the front die and the rear die; The ejection mechanism comprises a first inclined top and a second inclined top, a first supporting surface is formed on the first inclined top, a second supporting surface is formed on the second inclined top, and the first supporting surface and the second supporting surface are both used for contacting an injection molding piece in the cavity; In the injection molding state, the first propping surface and the second propping surface are mutually connected, the inclination angle of the first inclined top relative to the rear mold and the inclination angle of the second inclined top relative to the rear mold are different, in the demolding state, the first propping surface and the second propping surface are separated from each other, and the first propping surface and the second propping surface are both separated from the injection molding piece. According to the pitched roof mold provided by the embodiment of the utility model, the first pitched roof is provided with the first abutting surface, the second pitched roof is provided with the second abutting surface, the first abutting surface is abutted with the second abutting surface in the injection molding state, and the first abutting surface slides on the second abutting surface and gradually moves away from the second abutting surface in the process of switching from the injection molding state to the demolding state. According to the pitched roof mold provided by the embodiment of the utility model, the inclination angle of the first pitched roof relative to the rear mold is smaller than the inclination angle of the second pitched roof relative to the rear mold. According to the pitched roof mold disclosed by the embodiment of the utility model, the inclination angle of the first pitched roof relative to the rear mold is 7 degrees, and the inclination angle of the second pitched roof relative to the rear mold is 12 degrees. According to the pitched roof mold provided by the embodiment of the utility model, the first pitched roof and the second pitched roof are adjacently arranged, the first supporting surface is provided with the first forming groove for accommodating the first back-off of the injection molding piece, the second supporting surface is provided with the second forming groove for accommodating the second back-off of the injection molding piece, and the moving speed of the first pitched roof in the depth direction of the first forming groove is smaller than the moving speed of the second pitched roof in the depth direction of the second forming groove in the process of switching from the injection molding state to the demolding state. According to the pitched roof