WO2013044439A1

WO2013044439A1 - Electromagnetic clutch for safety protection device of press machine

Info

Publication number: WO2013044439A1
Application number: PCT/CN2011/080194
Authority: WO
Inventors: 周庆然
Original assignee: Zhou Qingran
Priority date: 2011-09-27
Filing date: 2011-09-27
Publication date: 2013-04-04

Abstract

An electromagnetic clutch for a safety protection device of a press machine comprises an upper case body (5) and a lower case body (6). An upper iron core (1) is disposed in the upper case body (5). The upper end of the upper iron core (1) passes out of the top surface of the upper case body (5). A coil (4) is sleeved on the upper iron core (1). A socket base (7) is disposed on a side wall of the upper case body (5). An aerial socket (8) connected to the coil (4) is disposed in the socket base (7). A T-shaped lower iron core (2) is disposed in the lower case body (6). The lower end of the lower iron core (2) passes out of the bottom surface of the lower case body (6). A pressure spring (3) is disposed between the T-shaped top end of the lower iron core (2) and the bottom surface of the lower case body (6). The pressure spring (3) is sleeved on the external surface of the lower iron core (2). Copper sheathing is omitted in the upper and lower case bodies of the electromagnetic clutch, thereby avoiding fixing the electromagnetic clutch to the body of the press machine, saving a plurality of mounting accessories, thereby reducing the cost of the product and facilitating the installation and maintenance of the product. When the upper and lower iron cores are bound, the electromagnetic clutch moves up and down as a whole, and when the upper and lower iron cores are separated, only the lower iron core moves downward, thereby prolonging the service life of the electromagnetic clutch.

Description

Electromagnetic clutch for press safety protection device

技术领域Technical field

The utility model relates to an electromagnetic clutch, in particular to an electromagnetic clutch used for a safety protection device for a press. In particular, an electromagnetic clutch for a rigid clutch press safety device.

背景技术Background technique

The safety performance of the press (ie punch) is very important. The traditional rigid clutch press is designed to ensure the safety of the operator. For example, the safety protection design of patent number 00248665.2, in the rigid clutch press An electromagnetic clutch is added between the pedal and the operating mechanism, and the electromagnetic clutch is mounted on the body of the press. The electromagnetic clutch is provided with an upper and lower iron core, and the upper and lower shells of the upper and lower iron cores and the electromagnetic clutch are simultaneously There is a magnetic anti-magnetic copper sleeve between them. In each work, the upper and lower iron cores move in both directions. In the long-term use, the friction between the upper and lower iron cores and the anti-magnetic copper sleeve will damage the anti-magnetic copper sleeve, resulting in greatly reduced life of the electromagnetic clutch. At the same time, the electromagnetic clutch is installed on the body of the press, which makes the electromagnetic clutch need to be equipped with corresponding installation accessories. The electromagnetic clutch manufacturing cost is high, which is not conducive to market competition.

发明内容 Summary of the invention

In view of the defects existing in the prior art, the object of the present invention is to provide an electromagnetic clutch for a safety protection device for a press, which saves the copper sleeve in the upper and lower casings, avoids the fixing of the electromagnetic clutch and the body of the press, and saves a lot of installation. The accessory reduces the product cost and is easy to install and maintain. When the upper and lower iron cores are in the combined state, the electromagnetic clutch moves up and down as a whole. When the upper and lower iron cores are in the separated state, only the lower iron core moves downward, which improves the life of the electromagnetic clutch.

In order to achieve the above objectives, the technical solution adopted by the utility model is:

An electromagnetic clutch for a safety protection device for a press, comprising:

The upper casing 5 and the lower casing 6 are relatively fastened up and down, the material of the lower casing 6 is engineering plastic, and the material of the upper casing 5 is magnetic material.

An upper core 1 is disposed in the upper casing 5, an upper end of the upper core 1 passes through a top surface of the upper casing 5, and a coil 4 is sleeved on the upper core 1

a socket base 7 is disposed on a sidewall of the upper casing 5, and an air socket 8 connected to the coil 4 is disposed in the socket base 7,

A T-shaped lower iron core 2 is disposed in the lower casing 6, and a lower end of the lower iron core 2 passes through a bottom surface of the lower casing 6,

A compression spring 3 is provided between the T-shaped top end of the lower core 2 and the bottom surface of the lower casing 6, and the compression spring 3 is fitted to the outer surface of the lower core 2.

On the basis of the above technical solution, the side wall of the upper casing 5 is provided with external threads, and the side wall of the lower casing 6 is provided with internal threads, which are screwed together.

On the basis of the above technical solution, the top surface of the T-shaped top end of the lower iron core 2 is a suction surface, the lower end surface of the upper iron core 1 is a suction surface, and the suction surface of the upper iron core 1 and the upper casing 5 The lower end face is flat,

The diameter of the suction surface of the lower core 2 is larger than the inner diameter of the upper casing 5 and smaller than the outer diameter of the upper casing 5,

The suction surface of the lower core 2 forms a magnetic circuit with the upper core 1 and the upper casing 5.

The electromagnetic clutch for the safety protection device of the press of the utility model saves the copper sleeve in the upper and lower casings, avoids the fixing of the electromagnetic clutch and the body of the press, saves many installation accessories, reduces product cost, and is convenient for installation and maintenance. When the upper and lower iron cores are in the combined state (the coils are electrically connected to the upper and lower iron cores), the pedals are stepped on, and the electromagnetic clutch moves up and down as a whole. When the upper and lower iron cores are in a separated state, the foot pedal is depressed, and only the lower iron core moves downward, which greatly reduces The wear of the core improves the life of the electromagnetic clutch. Further, the lower core suction surface is smaller than the outer diameter of the upper casing is larger than the inner diameter of the upper casing, thereby increasing the suction force of the suction surface. Furthermore, the material of the lower casing of the electromagnetic clutch is engineering plastic, and the cost can be further reduced.

附图说明DRAWINGS

The utility model has the following drawings:

1 is a schematic view of the upper and lower iron cores of the present invention,

2 is a schematic view showing the disconnected state of the upper and lower iron cores of the present invention.

具体实施方式 detailed description

The present invention will be further described in detail below with reference to the accompanying drawings.

As shown in FIG. 1 and FIG. 2, the electromagnetic clutch for the safety protection device of the press according to the present invention comprises:

The upper casing 5 and the lower casing 6 are relatively fastened up and down, and the material of the lower casing 6 is engineering plastic, and the material of the upper casing 5 is magnetic material, such as magnetic material such as iron.

When the utility model is used, the upper core end extending from the upper casing is connected with the operating mechanism of the rigid clutch press, and the lower iron core end of the lower casing and the pedal of the rigid clutch press are extended. The connecting chains are connected to each other for transmission transition. At the same time, it is used together with the infrared transmitter, infrared receiver and electrical controller of the safety device of the press.

The working principle of the utility model is: when the press stops at the dead point, if the hand or the object is mistakenly entered into the dangerous area, the infrared ray is blocked, and if the pedal of the rigid clutch press is stepped on, the pull is pulled down. The iron core, at this time, the electrical controller will give a signal that the electromagnetic clutch is de-energized, so that the upper and lower iron cores of the electromagnetic clutch are disconnected, so that the electromagnetic clutch can not be driven, the operating mechanism does not act, the clutch will not be combined, and the slider will not Movement, the press is not working, it plays a safety protection role. On the contrary, when the normal working, the electromagnetic clutch is always energized to keep the suction. When the pedal is stepped on the whole electromagnetic clutch, the whole machine will move once and the press will work once. This can avoid the electromagnetic clutch and the press body fixed, save a lot of installation accessories, and reduce the wear of the iron core.

The contents not described in detail in the present specification belong to the prior art well known to those skilled in the art.

Claims

An electromagnetic clutch for a press safety protection device, comprising: an upper casing (5) and a lower casing (6) that are relatively fastened up and down, the material of the lower casing (6) is engineering Plastic, the upper casing (5) is made of a magnetic material, and an upper iron core (1) is disposed in the upper casing (5), and an upper end of the upper iron core (1) passes through the upper casing (5). On the top surface, a coil (4) is sleeved on the upper iron core (1), and a socket base (7) is arranged on the side wall of the upper casing (5), and the socket base (7) is connected to the coil (4). The aviation socket (8) is provided with a T-shaped lower iron core (2) in the lower casing (6), and the lower end of the lower iron core (2) passes through the bottom surface of the lower casing (6) in the lower iron core (2) A compression spring (3) is disposed between the T-shaped top end and the bottom surface of the lower casing (6), and the compression spring (3) is fitted to the outer surface of the lower iron core (2).
The electromagnetic clutch for a safety device for a press according to claim 1, wherein an outer thread is provided on a side wall of the upper casing (5), and an inner thread is provided on a side wall of the lower casing (6). The two are screwed together.
The electromagnetic clutch for a press safety protection device according to claim 1, wherein a top surface of the T-shaped top end of the lower iron core (2) is a suction surface, and a lower end surface of the upper iron core (1) is a suction surface, and the suction surface of the upper iron core (1) is flat with the lower end surface of the upper casing (5), and the diameter of the suction surface of the lower iron core (2) is larger than the inner diameter of the upper casing (5), and The outer surface of the lower core (2) is smaller than the outer diameter of the upper casing (5), and the upper iron core (1) and the upper casing (5) constitute a magnetic circuit.