Locking device and mold using same

Patent metadata

Field	Value
Publication number	US-2016339608-A1
Application number	US-201514836220-A
Country	US
Kind code	A1
Filing date	Aug 26, 2015
Priority date	May 20, 2015
Publication date	Nov 24, 2016
Grant date	—

Abstract

A locking includes a locking member, a guiding rod, and a space member. The guiding rod is fixedly connected to the locking member. The mold includes a first mold plate, a second mold plate, a stripper plate, and a top plate. The first mold plate, the second mold plate, the stripper plate, and the top plate are connected in sequence. A receiving hole is defined in the first mold board. A through hole is defined in the second mold board corresponding to the receiving hole. The guiding member movably passes through the through hole. The through hole includes a first retaining portion and a second retaining portion. The space member is sleeved on the locking member. A diameter of the space member is greater than that of the receiving hole and the second retaining portion. The disclosure also supplies a mold.

First claim

What is claimed is:

1 . A mold comprising:
a first mold plate defining a receiving hole; a second mold plate clamped to the first mold plate and defining a through hole corresponding to the receiving hole, the through hole comprising a first retaining portion and a second retaining portion coupled to the first retaining portion, wherein the first retaining portion is located adjacent to the first mold plate and the first retaining portion having a diameter being greater than a diameter of the second retaining portion; a stripper plate positioned adjacent to the second mold plate and away from the first mold plate, wherein the second mold plate positioned between the stripper plate and the first mold plate; a top plate coupled to the stripper plate away from the second mold plate, the stripper plate positioned between the top plate and the stripper plate; a locking device movably passing through the first mold plate and the second mold plate, the locking device comprising:
a locking member movably received in the receiving hole;
a guiding rod coupled to the locking member with one end, the guiding rod passing through the first retaining portion and the second retaining portion away from the locking member;
a space member sleeved on the locking member and positioned adjacent to the guiding rod, wherein the space member having a diameter that is smaller than the diameter of the first retaining portion but greater than the diameter of the second retaining portion; and
a lever assembly movably passing through the first mold plate, the second mold plate, the stripper plate, and the top plate;
wherein when the first mold plate is moved towards the second mold plate, the locking member and the guiding rod move towards the top plate; when in a mold closing operation, the first mold plate and the second mold plate move until the space member contacts an end wall of the first retaining portion, such that a partial portion of the guiding rod is exposed out of the through hole to push the stripper plate close to the top plate.

2 . The mold of claim 1 , wherein the guiding rod comprises a first guiding portion and a second guiding portion coupling with the first guiding portion, the through hole further comprises a third retaining portion flow communicating with the second guiding portion, the second retaining portion is located between the first retaining portion and the third retaining portion, a diameter of the third retaining portion is greater than the diameter of the second retaining portion, the first guiding portion is fixed with the locking member 81 , a diameter of the second guiding portion is greater than the diameter of the first guiding portion and the diameter of the second retaining portion, the first guiding portion movably passes through the second retaining portion, the second guiding portion is movably received in the third retaining portion.

3 . The mold of claim 1 , wherein the locking device further comprises a sleeve, the sleeve is received in the receiving hole, the locking member is capable of being movably received in the sleeve.

4 . The mold of claim 3 , wherein the receiving hole is a stepped hole comprising a first connecting portion and a second connecting portion flow communicating with the first connecting portion, the second connecting portion is positioned adjacent to the second mold plate, a diameter of the first connecting portion is greater than a diameter of the second connecting portion to form a stepped surface, a flange portion is formed on a bottom of the sleeve, a diameter of the flange portion is greater the diameter of second connecting portion, a height of the flange portion is less than or equal to a height of the first connecting portion.

5 . The mold of claim 1 , wherein the lever assembly comprises a pulling rod and an elastic member, the second mold plate defines a mounting hole adjacent to the stripper plate and spaced from the through hole, the pulling rod passes through the first mold plate, the second mold plate, the stripper plate, and the top plate, the elastic member is sleeved on the pulling rod and received in the mounting hole.

6 . The mold of claim 1 , wherein the locking member comprises a bushing and a taper bolt, the taper bolt is received in the bushing at one end and another one end of the taper bolt is fixedly coupled to the guiding rod, the space member is located between the guiding rod and the bushing.

7 . The mold of claim 1 , wherein the locking member is a parting lock.

8 . The mold of claim 1 , wherein a round angle is formed on a sidewall of the receiving hole adjacent to the second mold plate for preventing the locking device from damage.

9 . A locking device for a mold, the mold comprising a first mold plate, a second mold plate, a stripper plate, and a top plate, the first mold plate, the second mold plate, the stripper plate, and the top plate being detachably assembled together in sequence, the locking device comprising:
a locking member movably received in a receiving hole of a first mold plate of the mold; a guiding rod coupled to the locking member with one end, the guiding rod passing through a through hole of a second mold plate of the mold corresponding to the receiving hole, the through hole comprising a first retaining portion and a second retaining portion flow communicating with the first retaining portion; and a space member sleeved on the locking member and positioned adjacent to the guiding rod, a diameter of the space member being less than the first retaining portion but greater than the diameter of the second retaining portion,
wherein the first mold plate is moved towards the second mold plate, the locking member and the guiding rod are brought to move towards the top plate when in a mold closing operation, the first mold plate and the second mold plate keep moving until the space member contacting an end wall of the first retaining portion, such that a partial portion of the guiding rod is exposed out of the through hole to push the stripper plate closing with the top plate.

10 . The locking device of claim 9 , wherein the locking device further comprises a sleeve, the sleeve is configured to be received in the receiving hole, the locking member is capable of movably receiving in the sleeve.

11 . The locking device of claim 10 , wherein a flange portion is formed on a bottom of the sleeve.

12 . The locking device of claim 9 , wherein the guiding rod comprises a first guiding portion and a second guiding portion coupling with the first guiding portion, a diameter of the second guiding portion is greater than a diameter of the first guiding portion and the second retaining portion, the first guiding portion movably passes through the second retaining portion, the second guiding portion is configure to be movably received in a third retaining portion of the through hole flow communicating with the second retaining portion.

13 . The locking device of claim 9 , wherein the locking member comprises a bushing and a taper bolt, the taper bolt is received in the bushing at one end and another one end of the taper bolt is fixedly coupled to the guiding rod, the space member is located between the guiding rod and the bushing.

Assignees

• Hong Fu Jin Prec Ind (Shenzhen) Co Ltd
• Hon Hai Prec Ind Co Ltd

Inventors

• Liu Jun
• Niu Shan-Xue

Classifications

• B29C2045/2604

  Latching means for successive opening or closing of mould plates · CPC title

• B29C45/2606

  Guiding or centering means · CPC title

• B29C45/2602 Primary

  Mould construction elements · CPC title

• B29C33/202

  Clamping means operating on closed or nearly closed mould parts, the clamping means being independently movable of the opening or closing means (clamping devices for injection moulding machines B29C45/64) · CPC title

• B29C33/444 Primary

  for stripping articles from a mould core, e.g. using stripper plates · CPC title