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CN-122008501-A - Mould

CN122008501ACN 122008501 ACN122008501 ACN 122008501ACN-122008501-A

Abstract

The disclosed mold includes a molding die assembly, a threaded core, a movement driver, a rotation driver, an induction counterpart, an induction element, and a control element. The threaded core is movable into and out of and rotatably disposed in the molding die assembly to move and rotate to a position where the threaded portion is located inside the molding die assembly when the molding die assembly is closed, and to rotate out of the product when the molding die assembly is opened. The drive shaft of the rotary drive member and the movement drive member are in driving connection with the threaded mandrel via a transmission assembly to drive movement and rotation. One of the sensing piece and the sensing element is synchronously and rotatably connected to the driving shaft so as to be capable of rotating relative to the other, and the sensing piece and the sensing element are in sensing fit to determine the rotating stroke of the driving shaft. The control element determines that the end of the thread of the threaded core rotates in place according to the preset stroke reached by the rotating stroke, and controls the stop of driving according to the rotating in place. The mold of the present disclosure is capable of monitoring whether the threaded end of the threaded core is rotating in place and preventing over-rotation.

Inventors

  • LIU FEI
  • Shen dongxin
  • YANG PENG

Assignees

  • 上海创率复合材料有限公司

Dates

Publication Date
20260512
Application Date
20260306

Claims (10)

  1. 1. A mold, comprising: At least one forming die assembly comprising at least two forming die parts which can relatively move along the die opening and closing direction so as to be close to the die closing/far away from the die; At least one threaded core which can move in and out and is rotatably arranged between the at least two molding modules so as to reach the position of the threaded part in the molding module to match with a molded product through moving and rotating when the mold is closed and rotate to release from the product when the mold is opened; the driving assembly comprises a moving driving piece and a rotating driving piece, wherein a driving shaft of the rotating driving piece and the moving driving piece are in transmission connection with the threaded core through a transmission assembly so as to drive the threaded core to move and rotate; the induction assembly comprises an induction matching piece and at least one induction element, wherein one of the induction element and the induction matching piece is synchronously and rotatably connected with the driving shaft so as to be capable of rotating relative to the other, the induction matching piece is provided with at least one induction part for being induced by the induction element to change an induction signal output by the induction element, the induction signal is used for determining the rotation stroke of the driving shaft, and And the control element is respectively connected with the induction element and the rotary driving piece, so as to determine that the die-entering end of the thread of the threaded core rotates in place according to the preset stroke reached by the rotary stroke, and control the rotary driving piece to stop driving according to the rotation in place.
  2. 2. The mold of claim 1, wherein the rotating into place comprises at least one of: (1) The rotation stroke sensed by the sensing element comprises a die closing rotation angle of the driving shaft, and the control element determines that the die closing of the die inlet end part rotates in place according to the fact that the die closing rotation angle reaches a preset angle and controls the rotation driving piece to stop die closing driving; (2) The rotary stroke that the inductive element was responded to includes the drawing of patterns rotation number of turns of drive shaft, control element reaches the preset number of turns according to the drawing of patterns rotation number of turns and confirms the drawing of patterns rotation of income mould tip is put in place, and control the rotary driving piece stops drawing of patterns drive.
  3. 3. The mold of claim 2, wherein the release of the threaded core further comprises at least one of: (1) The die-in end of the thread core extends to one axial end of the thread core, so that one axial end of the thread core can be removed from the product along with the demolding rotation of the thread; (2) The mold also comprises a butt joint core which is movably arranged between the at least two molding modules in and out, is positioned on two opposite sides of the molding module with the threaded core, and is provided with a mold clamping butt joint part for circumferential butt joint when the mold clamping ends are clamped.
  4. 4. The mold according to claim 1, wherein the sensing parts are at least two, and include a plurality of first sensing parts located in the same circular path and a second sensing part located outside the circular path; The at least two sensing elements include a first sensing element whose relative rotation path includes a sensing position of each of the first sensing parts and is implemented as a first sensor which senses the number of first sensing parts rotated therethrough to output a number of first sub-signals to reflect a mold clamping rotation angle of the driving shaft via the number of output times of the first sub-signals, and a second sensing element whose relative rotation path includes a sensing position of the second sensing part and is implemented as a second sensor which senses the number of rotations through the second sensing parts to output a number of second sub-signals to reflect a mold releasing rotation number of the driving shaft via the number of output times of the second sub-signals.
  5. 5. The mold of claim 4, wherein the first sensing portion and the second sensing portion are different structural features, and at least two of the sensing elements are implemented as different types of proximity switches for sensing different structural features.
  6. 6. The mold according to claim 1, wherein the forming mold assembly and the threaded cores are plural and correspond one to one, and the plural threaded cores are synchronously rotated by the same driving shaft and the transmission of plural sets of the transmission assemblies.
  7. 7. The mold of claim 1 or 6, wherein each set of the drive assemblies comprises: The first gear is in transmission connection with the driving shaft and is provided with a first end and a second end which are respectively close to and far away from the forming die assembly; A second gear slidably engaged with the first gear between the first end and the second end and driving the threaded core to rotate around the threaded core so as to slide from the second end to the first end and drive the threaded core to rotate when the mold is closed and slide from the second end to the first end and drive the threaded core to rotate when the mold is opened, and The transmission sliding part is arranged in a sliding way in the direction towards/away from the forming die assembly and is limited to rotate, and is provided with two fixing parts which are abutted on two opposite sides of the second gear and are used for fixing the rotatable threaded core, and the transmission sliding part is connected with the movable driving part.
  8. 8. The mold of claim 7, wherein each set of the drive assemblies further comprises an elastic member coupled between the molding module and the drive slide to provide an elastic force for driving the drive slide to move away from the molding module for return.
  9. 9. The mold according to claim 6, further comprising a driving gear connected to the driving shaft, and a plurality of driven gears meshed on an outer peripheral side of the driving gear and in driving connection with the plurality of screw cores in one-to-one correspondence to drive the plurality of screw cores to rotate synchronously.
  10. 10. The mold according to claim 1, further comprising an ejector assembly movably penetrating the molding die in an ejection direction for ejecting the product, and/or The die further includes a rotation stop secured to the threaded core, and a rotation stop configured to engage the rotation stop to limit rotation of the threaded core when the circumferential position of the in-mold end is in place, and/or The die also comprises at least two outer die parts which are correspondingly fixed on two outer sides of the at least two molding die parts, wherein one outer die part is fixedly provided with an inclined guide part which extends obliquely, and a butt joint core which can slide into and out of the molding die assembly is arranged on the other outer die part, and is provided with a sliding part which is used for the inclined guide part to be inserted in an inclined direction in a sliding way so as to guide the inclined guide part to slide into and out of the molding die assembly.

Description

Mould Technical Field The present disclosure relates to the field of molding devices, and more particularly, to a mold. Background The mold is a tool for molding a product, and is used for forming a cavity for molding the product when the mold is closed, and injecting a molten liquid molding material into the cavity and cooling the molten liquid molding material to mold a solid molding product. In the related art, when a mold is used for molding a product with threads, a threaded core of the mold is usually a thread for molding the product, and the threaded core of the mold is usually rotatably disposed in the mold to facilitate mold closing of the mold and rotational demolding after molding of the product. In the process of rotary die assembly and/or rotary die stripping of the threaded core, in order to ensure the quality of a molded product and smooth progress of the die assembly and die stripping process, it is important to monitor the rotation of the threaded end portion of the threaded core in place, however, in the process of die assembly and/or die stripping, the threaded portion of the threaded core is usually located inside a die, whether the die assembly and/or die stripping of the threaded end portion of the threaded core is rotated in place or not is difficult to be directly observed, and a monitoring device and a corresponding in-place control device capable of monitoring whether the threaded end portion of the threaded core is rotated in place or not are lacking in the related art. Disclosure of Invention In view of the above-mentioned drawbacks of the prior art, an object of the present disclosure is to provide a mold capable of monitoring whether a threaded end portion of the threaded core is rotated in place and preventing excessive rotation, which is advantageous for ensuring smooth progress of the mold closing and releasing process. The mold comprises at least one forming mold assembly, at least one threaded core, at least one sensing assembly, at least one driving component and at least one sensing component, wherein the forming mold assembly comprises at least two forming mold assemblies which can relatively move along the mold opening and closing direction to close to and far away from the mold, the at least one threaded core can move in and out and can be rotatably arranged between the at least two forming mold assemblies so as to reach the position of a threaded part positioned inside the forming mold assembly to match a formed product through movement and rotation when the mold is closed, the driving assembly comprises a moving driving piece and a rotating driving piece, the driving shaft of the rotating driving piece and the moving driving piece are in transmission connection with the threaded core through the driving assembly to drive the threaded core to move and rotate, the sensing assembly comprises a sensing matching piece and at least one sensing element, one sensing element and the sensing matching piece are synchronously and rotatably connected with the driving shaft to be capable of relatively rotating with the other, the sensing matching piece is provided with at least one sensing part which is used for being sensed by the sensing element to enable a sensing signal output by the sensing element to change, the sensing signal is used for determining the rotating stroke of the driving shaft, the driving element is used for controlling the rotating driving piece, and the driving element is in accordance with the rotating stroke of the driving piece is controlled to be in accordance with the rotating until the rotating position reaches the end of the threaded core and the rotating driving piece is in accordance with the rotation driving mode. According to some embodiments of the present disclosure, the rotation in place includes at least one of (1) a rotation stroke induced by the induction element includes a mold clamping rotation angle of the driving shaft, the control element determines that mold clamping rotation of the mold-in end is in place according to the mold clamping rotation angle reaching a preset angle and controls the rotation driving member to stop mold clamping driving, and (2) a rotation stroke induced by the induction element includes a mold releasing rotation number of the driving shaft, and the control element determines that mold releasing rotation of the mold-in end is in place according to the mold releasing rotation number reaching the preset number of times and controls the rotation driving member to stop mold releasing driving. According to some embodiments of the present disclosure, the demolding of the threaded core further comprises at least one of (1) extending a mold-in end of the thread of the threaded core to an axial end thereof so that the axial end of the threaded core can be moved out of position with the demolding rotation of the thread for the product, and (2) movably positioning a butt-joint core between the at least two molding module