CN2820859Y

CN2820859Y - Air flow turning device for movable glass cutting table

Info

Publication number: CN2820859Y
Application number: CN 200520082996
Authority: CN
Inventors: 侯树林; 王爱民
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-05-06
Filing date: 2005-05-06
Publication date: 2006-09-27
Anticipated expiration: 2015-05-06

Abstract

The utility model relates to an air flow reversing device for a movable glass cutting table. The utility model is characterized in that a valve body 14 is arranged on a working table; an air outflow connection opening 18 and an air inflow connection opening 7 are arranged at the bottom of the working table; a valve core 9 which form a slide fit with the valve body is arranged in a through hole of the valve body; the valve core is connected with an air cylinder 8; air hole 17b, 16b, 15b are respectively arranged in each cavity of the valve core; an air hole 16a which is same to an air chamber 10 of the valve body is arranged in a middle cavity, and an air hole 15a and an air hole 17a which are communicated with the outside world are respectively arranged in a left cavity and a right cavity. The inflow air 5 flows to a fan 1 from the air hole 16a and the air hole 16b, the outflow air 6 flows to the outside world from the air hole 17b and the air hole 17a. When the cavity 16 and the cavity 15 are positioned in the air chamber 10, the blasting state is formed. The utility model makes the fan rotate to one direction all the time, so the utility model overcomes the defects that the existing fan suddenly rotates reversely to cause the impairment of the fan, etc. Thereby, the service life of the fan is prolonged, and the utility model is more convenient to operate.

Description

Portable glass cutting-table airflow-reversing device

Technical field: the utility model relates to the machinery that cuts of glass, particularly a kind of airflow-reversing device of glass cutting-table

Background technology:

Develop rapidly along with world economy, increasing to the demand that glass cuts, traditional glass cutter adds ruler and cuts the needs that sheet glass can not adapt to develop rapidly, therefore, some glass cutting-tables have appearred in recent years, its working efficiency and cut quality and have increased significantly.Its principle of work is to be separately installed with a plurality of steel alloy break bars on single bridge, cantilever or the orthogonal doube bridge, they move around, the steel alloy break bar is cut into sheet with the glass of placing on the cutter's table worktable, worktable is provided with pore and air chamber, and air chamber is connected with blower fan, when cutting glass, the air-breathing formation negative pressure of blower fan is firmly inhaled glass on worktable, cut the rear fan counter-rotating air blast that finishes, make the air chamber of worktable form small malleation, glass is easy to be removed.But above-mentioned working process needs blower fan counter-rotating air blast suddenly when air draught; this can cause the electric current of motor significantly to rise; motor is easily burnt out; the surging force that fan counter-rotating suddenly brings also can cause the damage of blower fan; therefore; blower fan not only work-ing life short, and break down and situation such as parts damages through regular meeting.Extensively retrieve at the problems referred to above, still find no the technical scheme related to the present invention of effect.

Summary of the invention:

The purpose of this utility model is exactly a kind of portable glass cutting-table airflow-reversing device that designs in order to solve the above-mentioned defective that exists in the prior art.

To achieve these goals, the utility model has adopted following technical scheme:

A kind of portable glass cutting-table airflow-reversing device, it is by the cutter's table worktable of band pore, air chamber that links to each other with worktable and the blower fan that links to each other with air chamber are formed, it is characterized in that being provided with on the described worktable cavity valve body as air chamber, and communicate with the worktable pore, the valve body side is provided with a pair of through hole, the valve body bottom surface is provided with a pair of inlet mouth and air outlet, a spool is set in the through hole of valve body to be slidingly matched with it, spool one end links to each other with power-driven gear, be provided with three mutual isolated cavitys in the spool, the bottom surface of each cavity be equipped with one with valve body on inlet mouth, the pore that matches in the air outlet, middle cavity is provided with the pore that communicates with the valve body air chamber, about the end face of two cavitys be respectively equipped with and the extraneous pore that communicates.Promptly when suction condition, a pore of spool middle cavity is communicated with air chamber with valve body air outlet aligned fit, another pore; Pore and the inlet mouth aligned fit of valve body, a pore of another cavity then are in communication with the outside.When the air blast state, power-driven gear pulling spool moves to the air blast position, and a pore of spool middle cavity is communicated with air chamber with valve body inlet mouth aligned fit, another pore; Pore and the air outlet aligned fit of valve body, a pore of another cavity then are in communication with the outside.Therefore, blower fan is all the time towards a direction rotation.Described spool can be an orthogonal, also can be circular, and certainly, the through hole on the valve body also can be orthogonal or circle.Described power-driven gear can be that cylinder directly connects spool, also can use magnetic valve, motor to link to each other with spool by crank, connecting rod.

Because the utility model has adopted technique scheme, make blower fan can be all the time towards a direction rotation and needn't reverse rotation, it has overcome the motor that exists in the prior art and has significantly risen because of the electric current that commutation causes, motor is easily burnt out, the surging force that fan counter-rotating is suddenly brought also can cause shortcomings such as draught fan impeller damage, has prolonged blower fan work-ing life, has improved productivity, saved production cost, operated very easy.

For the utility model is described in further detail, following accompanying drawing provides two most preferred embodiments of the present utility model.

Description of drawings:

Fig. 1 is the front view that the utility model embodiment 1 is in suction condition;

Fig. 2 is the front view that the utility model embodiment 1 is in the air blast state;

Fig. 3 is the front view that the utility model embodiment 2 is in suction condition;

Fig. 4 is the front view that the utility model embodiment 2 is in the air blast state;

Fig. 5 is the A-A sectional view of Fig. 3;

Fig. 6 is the B-B sectional view of Fig. 3;

Embodiment:

Embodiment 1: as shown in Figure 1, worktable 13 is provided with pore 12, holds fixing glass 11 during negative pressure in the pore, can conveniently take out glass during pressure-fired.Valve body 14 of connection below worktable 13, the air chamber 10 that forms in the valve body 14 is communicated with pore 12.Air outlet 18 of the following connection of valve body 14 and an inlet mouth 7, they are connected with air outlet 3 with the blast inlet 2 of blower fan 1 respectively by flexible pipe 4.Be provided with a pair of through hole in the side of valve body 14, a spool 9 wherein is set, spool 9 is slidingly matched with through hole.Be provided with three mutual isolated

cavitys

15,16,17 in the spool 9, be respectively equipped with pore 15b, a 16b, 17b below each cavity, about the end face of two cavitys be respectively equipped with

pore

15a, 17a, be provided with a pore 16a above the middle cavity.The end face of left side cavity links to each other with the piston rod 8a of cylinder 8, when the piston of cylinder 8 stretches out,

cavity

17,16 is positioned at valve body, their

pore

17b, 16b cooperates with inlet mouth 7 and air outlet 18 respectively, this moment, air chamber 1 was in suction condition, be that pore 12 is communicated with blower fan 1 inlet mouth by

pore

16a, 16b, air-flow 6 leads to the external world by

pore

17b, 17a.

As shown in Figure 2, when the piston rod of cylinder 8 is regained,

cavity

16,15 is positioned at valve body, their

pore

16b, 15b cooperates with inlet mouth 7 and air outlet 18 respectively, this moment, air chamber 10 was in the air blast state, be that pore 12 is communicated with blower fan 1 air outlet by

pore

16a, 16b, inlet mouth 7, air-flow 6 leads to pore 12 by

pore

16b, 16a, makes in the pore 12 to be in slight positive pressure state.Pore 15a, the 15b on the right then communicate with the external world, and air-flow 5 enters blower fan 1.

Embodiment 2: as Fig. 3, Fig. 5, shown in Figure 6, about the pore 17a, the side that 15a is arranged on cavity of two cavitys, correspondence position in the valve body 14 is provided with two

pore

14a, 14b, shown in Figure 3 is suction condition, the side of middle cavity 16 is with valve body 14 lateral pore 14a sealings (as shown in Figure 5), and air-flow 5 is from entering blower fan by cavity 16, air outlet 18; Cavity 17 lateral pore 17a in the left side cooperate (as shown in Figure 6) with the lateral pore 14 of valve body, and it is extraneous that air-flow 6 is flowed to by pore 17a, 14b.Power-driven gear is that the connecting rod 21 in the magnetic valve 22 is hinged with crank 19, and the middle and lower part of crank 19 and point of suppon 20 are hinged, and crank far-end and pull bar 8a are hinged.

As shown in Figure 4, when the connecting rod 21 in the magnetic valve 22 is regained, the

cavity

16,15 of spool 9 is positioned at valve body, their

pore

16b, 15b cooperates with inlet mouth 7 and air outlet 18 respectively, this moment, air chamber 19 was in the air blast state, be that air-flow 6 leads to pore 12 by

pore

16b, 16a, make in the pore 12 to be in slight positive pressure state.The pore 15a on the right then communicates with valve body 14 lateral pore 14a, and its structure is identical with Fig. 6.

Claims

1, portable glass cutting-table airflow-reversing device, it is by the cutter's table worktable of band pore, air chamber that links to each other with worktable and the blower fan that links to each other with air chamber are formed, it is characterized in that being provided with on the described worktable cavity valve body communicates as air chamber and with the worktable pore, the valve body side is provided with a pair of through hole, the valve body bottom surface is provided with a pair of inlet mouth and air outlet, a spool is set in the through hole of valve body to be slidingly matched with it, spool one end links to each other with power-driven gear, be provided with three mutual isolated cavitys in the spool, the bottom surface of each cavity be equipped with one with valve body on inlet mouth, the pore that matches in the air outlet, middle cavity is provided with the pore identical with the valve body air chamber, about the end face of two cavitys be respectively equipped with and the extraneous pore that communicates.

2, glass cutting-table airflow-reversing device according to claim 1 is characterized in that the pore in the left and right sides cavity of described spool is separately positioned on the side of cavity separately, and valve body is provided with two pores that match with pore in the cavity of the left and right sides on the spool.