Cutting device

Patent metadata

Field	Value
Publication number	US-9498894-B2
Application number	US-201314139784-A
Country	US
Kind code	B2
Filing date	Dec 23, 2013
Priority date	Dec 27, 2012
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

A cutting device includes a bottom plate, a platform located on the bottom plate for holding a workpiece, a first support plate connected to the support plate and located above the bottom plate, a first telescopic cylinder having a first piston, a blade connected to the first piston, a first medium providing device configured to provide medium, a first switch including a gateway A 1 connected to a first lower cavity of the first telescopic cylinder, a gateway B 1 opened to the outside, a gateway P 1 connected to the first medium providing device, a first sensor including a gateway A 2 opened to the outside, a gateway B 2 communicating with a first upper cavity of the first telescopic cylinder, and a gateway P 2 connected to the gateway B 1.

First claim

What is claimed is:

1. A cutting device for cutting off melt-delivery channels from a workpiece, the cutting device comprising:
a bottom plate;
a platform located on the bottom plate for holding the workpiece in position;
a first support plate connected to the bottom plate by at least one positioning rod and located above the bottom plate;
at least one first telescopic cylinder extending from the first support plate toward the bottom plate and defining a first upper cavity, a first lower cavity isolated from the first upper cavity and comprising a first piston between the first upper cavity and the first lower cavity;
a second support plate connected to the first piston and configured to be moved by the first piston toward or away from the bottom plate;
a first medium providing device configured to provide a medium for moving the first piston;
a first switch comprising a gateway (A 1 ) communicating with the first lower cavity of the at least first telescopic cylinder, a gateway (B 1 ) opening to outside of the first switch, and a gateway (P 1 ) connected to the first medium providing device, wherein when the first switch is in an original state, the gateway (P 1 ) communicates with the gateway (A 1 ), and when the first switch is manually switched on, the gateway (P 1 ) communicates with the gateway (B 1 );
a first sensor comprising a gateway (A 2 ) opening to outside of the first sensor, a gateway (B 2 ) communicating with the first upper cavity of the at least one first telescopic cylinder, and a gateway (P 2 ) communicating with the gateway (B 1 ) of the first switch, wherein when the first sensor is actuated by the abutting of the platform, the gateway (P 2 ) communicates with the gateway (B 2 ), and when the first sensor is in an original position, the gateway (P 2 ) communicates with the gateway (A 2 );
a second telescopic cylinder comprising a second upper cavity, a second lower cavity isolated from the second upper cavity, and a second piston between the second upper cavity and the second lower cavity;
a second medium providing device configured to provide a medium for moving the second piston;
a blade connected to the second piston and configured to be moved by the second piston toward or away from the workpiece;
a second switch comprising a gateway (A 3 ) communicating with the second lower cavity, a gateway (B 3 ) opening to outside of the second switch, and a gateway (P 3 ) connected to the second medium providing device, wherein when the first switch is switched on, the gateway (P 3 ) communicates with the gateway (A 3 ), and when the first switch is switched off, the gateway P 3 communicates with the gateway (B 3 );
a second sensor configured to be abutted by the second support plate when the second support plate is moved by the first piston toward the bottom plate, the second sensor comprising a gateway (A 4 ) opening to outside of the second sensor, a gateway (B 4 ) connected to the second upper cavity of the second telescopic cylinder, and a gateway (P 4 ) connected to the gateway (B 3 ) of the second switch, wherein when the second sensor is in an original state, the gateway (P 4 ) communicates with the gateway (A 4 ), and when the second sensor is actuated by the abutting of the second support plate, the gateway (P 4 ) communicates with the gateway (B 4 );
wherein when the first sensor is actuated by the platform and the first switch is manually switched on, the medium provided by the first medium providing device enters the upper cavity of the first telescopic cylinder for driving the first piston to move the second support plate toward the bottom plate;
wherein when the first switch is manually switched off, the medium provided by the first medium providing device enters the lower cavity of the first telescopic cylinder for driving the first piston to move the second support plate away from the bottom plate;
wherein when the second sensor is actuated by the second support plate and the second switch is manually switched on, the medium provided by the second medium providing device enters the second upper cavity of the second telescopic cylinder for driving the second piston to move the blade toward the workpiece to cut off the melt-delivery channels from the workpiece; and
wherein when the second switch is manually switched off, the medium provided by the second medium providing device enters the second lower cavity of the second telescopic cylinder for driving the second piston to move the blade away from the workpiece.

2. The cutting device as in claim 1 , wherein the platform abuts against the first sensor by being slid along a sliding rail arranged on the bottom plate.

Assignees

• Hon Hai Prec Ind Co Ltd

Inventors

• Chu Chih-Hao

Classifications

• B26F2210/06

  Trimming plastic mouldings · CPC title

• Y10T83/8858

  Fluid pressure actuated · CPC title

• B29C45/382

  disposed outside the mould · CPC title

• B26F1/44 Primary

  Cutters therefor; Dies therefor · CPC title

• B26D5/12 Primary

  Fluid-pressure means · CPC title