CN205325321U - Emergency exit switch that small -size electromagnetism locking fine motion detected - Google Patents

Abstract

The utility model discloses a satisfy the stability requirement of emergency exit switch product in the use, disclose an emergency exit switch that small -size electromagnetism locking fine motion detected. The utility model discloses a casing, guard gate open/close detection device, locking monitoring device and bolt, the leading slider of guard gate open/close detection device, rearmounted slider be all on the bottom plate of spring mounting in the casing through one end, and micro -gap switch is all installed at the middle part of two sliders, and leading slider has the test rod, test rod and detection cam contact with detecting between the cam, the spring mounting is passed through in the casing to locking monitoring device elasticity piece one end, and the other end passes through the dabber of electro -magnet to be connected with the stop pin, and spacing cam is installed to the stop pin end, be provided with the shifting block on the bottom plate, shifting block one end and the contact of rearmounted slider, the other end and the contact of elasticity piece. The locking control and the lathe guard gate open/close detection of this emergency exit switch bolt constitute two mechanism's devices respectively, and then have improved the stability of product.

Description

A kind of safety door switch of compact electromagnetic locking fine motion detection

Technical field

The present invention relates to the safety door switch of a kind of lathe protection compact electromagnetic locking fine motion detection, for detecting the on off state of machine tool protection door, operator is played safeguard protection effect。

Background technology

Need to close the door start according to international standard global function Digit Control Machine Tool, namely want to allow lathe start, it is necessary to machine tool protection door is shut；And protective door cannot be opened when lathe runs。Under normal circumstances, safety door switch housing is arranged on outside lathe on the fixture of protection, and latch is arranged on the protective door of activity。And traditional safety door switch operation principle: controlled the shift position of the contact point unit being connected with electric magnet by the plug of latch, thus realizing the detection plugging and unplugging signal of electric magnet mechanical caging whether signal and latch；The signal that plugs and unplugs of such safety door switch actually electric magnet mechanical caging whether signal and latch is cascaded, once any one signal goes wrong all can directly influence another one signal。Given this my the company safety door switch that have developed compact electromagnetic locking fine motion detection newly developed, its advantage is exactly with machine tool protection door opening and closing, the locking pilot signal of latch is detected Signal separator become two mechanism arrangement, such two paths of signals is no longer cascaded thus ensure that being independent of each other of signal, and then improves the stability of product。All there is installing hole in four faces of safety door switch of compact electromagnetic locking fine motion detection, it is possible to any direction is installed, and wiring adopts rear end plug inserting mode；Reduce installation volume。

Summary of the invention

In order to meet the stability requirement of the safety door switch in use product of compact electromagnetic locking fine motion detection, the technical solution adopted in the utility model is as follows。

A kind of safety door switch of compact electromagnetic locking fine motion detection, including housing, protective door open-close detection apparatus, locking supervising device and latch, protective door open-close detection apparatus includes preposition slide block, rearmounted slide block, microswitch, detection bar, detection cam, preposition slide block, rearmounted slide block are arranged on the base plate in housing each through the spring of one end, the middle part of two slide blocks is mounted on microswitch, detection bar, detection bar and detection cam contact is had between preposition slide block and detection cam；

Locking supervising device includes elastic force block, electric magnet, stop pin, and elastic force block one end is arranged in housing by spring, and the other end is connected with stop pin by the mandrel of electric magnet, and stop pin end installs limit cam；

Being provided with shifting block, shifting block one end and rearmounted shoe contact on base plate, the other end contacts with elastic force block, and the circuit board of the microswitch installed in housing is connected with machine tool control system by cable。

Safety door switch according to described compact electromagnetic locking fine motion detection, detection bar end is arranged on detection by sealing shroud one and puts, and stop pin is arranged on lock sleeve by sealing shroud two。

Safety door switch according to described compact electromagnetic locking fine motion detection, two parallel micromotion switches one are installed in the middle part of described rearmounted slide block, middle part the distribution microswitch two of two back-to-back installations, the microswitch three of preposition slide block, above-mentioned microswitch contact is all towards slide block end。

Safety door switch according to described compact electromagnetic locking fine motion detection, having the partial cross section that release shaft, release shaft are positioned at elastic force block in the hollow structure of described elastic force block is arch circular arc。

Safety door switch according to described compact electromagnetic locking fine motion detection, the circular arc central angle of described arch is less than 180 degree。

Safety door switch according to described compact electromagnetic locking fine motion detection, camb cap insert port inserts end more than latch, and with induction port, all there is installing hole four sides of housing, and latch insert port has two places。

Advantage of the present utility model:

All there is installing hole in four faces of safety door switch of compact electromagnetic locking fine motion detection, it is possible to any direction is installed, and latch insert port has two places, and wiring adopts rear end plug inserting mode, and installation volume is little, it is possible to install and easy-to-connect is quick at narrow space；

This safety door switch adopts metal head, utilizes wide insert port and wide induction port to prevent from loosening, reduces the loosening abrasion caused when inserting and damage；

Electric magnet and microswitch is had in safety door switch, user can press wiring diagram as required and select the mode of connection, the locking pilot signal of latch and machine tool protection door opening and closing detection signal separately constitute two mechanism arrangement, and then improve the stability of product, these advantages are that other switches are unexistent。

Accompanying drawing explanation

Fig. 1 is the safety door switch front view of compact electromagnetic locking fine motion detection。

Fig. 2 is the safety door switch sectional view of compact electromagnetic locking fine motion detection。

Fig. 3 is the safety door switch axonometric drawing of compact electromagnetic locking fine motion detection。

Fig. 4 is circuit theory diagrams。

Fig. 5 is wiring diagram。

Fig. 6 is that safety door switch is locked figure。

Fig. 7 is that safety door switch is unblanked figure。

In accompanying drawing: 1, connecting plug；2, camb cap；3, latch；4, protecting cover；5, base plate；6, circuit board；7, rearmounted slide block；8, microswitch one；9, small pressure spring；10, stage clip；11, preposition slide block；12, microswitch two；13, microswitch three；14, detection bar；15, sealing shroud one；16, detection set；17, spacing compression spring one；18, latch segment one；19, straight pin；20, detection cam；21, limit cam；22, interior briquetting；23, latch segment two；24, spacing compression spring two；25, lock sleeve；26, sealing shroud two；27, stop pin；28, pulling block；29, electric magnet；30, shifting block；31, release shaft；32, elastic force block；33, spring；34, housing。

Detailed description of the invention

Embodiment

Brief description operation principle。

As described in Figure 2, there are electric magnet 29 and four microswitch in safety door switch。User can press Fig. 5 wiring diagram as required and select the mode of connection。After safety door switch installation and debugging are good。Rotate clockwise the release shaft 31 of the arrowhead form of switch side with instrument, make arrow points " locking " mark see Fig. 6-7, now can normally use。

Safety door switch described below is rear end with connecting plug 1 one end。

Shutting machine tool protection door, latch 3 can insert switch head, now electric magnet 29 no power, and limit cam 21 rotates at the de-latch segment one of the active force bottom and the latch segment two of latch 3。Now owing to spring 33 promotes elastic force block 32 with the mandrel in the middle of motor magnet 29, promoting stop pin 27 to insert in limit cam 21 spacing hole through pulling block 28, by limit cam 21 locking position, the limited cam 21 of latch 3 pins。Simultaneously elastic force block 32 by lever principle by shifting block 30 upper end (i.e. Fig. 2 left direction) backward motion, rearmounted slide block 7 under the effect of small pressure spring 9 on base plate 5 rearward movement, make microswitch contact become closure state；Meanwhile detection cam 20 rotates the de-latch segment 1 of the active force bottom and the spacing of latch segment 2 23 of latch 3, and detection bar 14 moves to minimum point along the curved surface of detection cam 20 from peak under the effect of stage clip 10。Therefore preposition slide block 11 is promoted forward and makes microswitch 3 13 closing of contact by stage clip 10, and microswitch 2 12 normally-closed contact disconnects。SW1, SW2 of Fig. 4 is microswitch one, SW3, SW4 respectively microswitch 3 13, microswitch 2 12。3 and 4,5 and 6,7 and 8 three pairs of closings of contact in Fig. 4 circuit theory diagrams, 9 and 10 pair of contact are opened；Now latch 3 is lockable, and machine tool protection door can not be opened。The safety door switch of compact electromagnetic locking fine motion detection has four faces all installing hole, it is possible to any direction is installed, and Fig. 3 latch 3 insert port has two places, and user can as desired to select the installation direction of latch 3。

When machine tool protection door opened by needs, according to Fig. 4 circuit theory diagrams, first connect 1 and 2 contacts of electromagnet coil, energising DC24V, mandrel in the middle of electric magnet 29 drives stop pin 27 to be shifted out from the hole, location of limit cam 21 by pulling block 28, is moved to the left, it is achieved the unblock of limit cam 21；Simultaneously the mandrel in the middle of electric magnet 29 drives elastic force block 32 compress spring 33 backward, is travelled forward by lever principle shifting block 30 upper end, and rearmounted slide block 7 compresses small pressure spring 9 and travels forward on base plate 5 and make two microswitch contacts disconnections；Disconnecting thus realizing 3 and 4,5 and 6 two pairs of contacts, now machine tool protection door can be opened；Lathe can not start。

Open machine tool protection door, detection cam 20 and limit cam 21 and rotate the de-latch segment 1 of the active force bottom and the spacing of latch segment 2 23 of latch 3。The rotary motion of detection cam 20 makes detection bar 14 move to peak along the curved surface of detection cam 20 from minimum point, detection bar 14 is moved rearwards by advancing preposition slide block 11 on base plate 5 backward, stage clip 10 compression makes microswitch three contact disconnect, microswitch two closing of contact。Here it is 7 and 8 contacts in Fig. 4 circuit theory diagrams disconnect, 9 and 10 pair of contact Guan Bis, lathe can not start, and now electric magnet 29 answers power-off, 3 and 4,5 and 6 two pairs of closings of contact。

When lathe has a power failure or safety door switch breaks down, to open machine tool protection door, the arrow knob of application tool is counterclockwise rotary switch side, arrow points " unblanking " mark is made to see Fig. 7, release shaft 31 promotes elastic force block 32, and elastic force block 32 drives stop pin 27 removal from the hole, location of limit cam 21 to realize the unblock of limit cam 21 with the mandrel in the middle of motor magnet 29 by pulling block 28；Now the limited cam 21 of latch 3 unlocks, and latch 3 is extracted from safety door switch head, and machine tool protection door is opened, and its state is as shown in Figure 2。

Embodiment described above is only that preferred implementation of the present utility model is described; not design of the present utility model and protection domain are defined; under the premise without departing from this utility model design concept; various modification that in this area, the technical solution of the utility model is made by ordinary skill technical staff and improvement, all should fall into protection domain of the present utility model。

Claims (6)

1. the safety door switch of a compact electromagnetic locking fine motion detection, including housing (34), protective door open-close detection apparatus, locking supervising device and latch (3), it is characterized in that: protective door open-close detection apparatus includes preposition slide block (11), rearmounted slide block (7), microswitch, detection bar (14), detection cam (20), preposition slide block (11), rearmounted slide block (7) is arranged on the base plate (5) in housing (34) each through the spring of one end, the middle part of two slide blocks is mounted on microswitch, detection bar (14) is had between preposition slide block (11) and detection cam (20), detection bar (14) contacts with detection cam (20)；

Locking supervising device includes elastic force block (32), electric magnet (29), stop pin (27), elastic force block (32) one end is arranged in housing (34) by spring (33), the other end is connected with stop pin (27) by the mandrel of electric magnet (29), and stop pin (27) end installs limit cam (21)；

Being provided with shifting block (30) on base plate (5), shifting block (30) one end contacts with rearmounted slide block (7), and the other end contacts with elastic force block (32), and the circuit board (6) of the microswitch installed in housing (34) is connected with machine tool control system by cable。

2. the safety door switch of compact electromagnetic according to claim 1 locking fine motion detection, it is characterized in that: detection bar (14) end is arranged in detection set (16) by sealing shroud one (15), and stop pin (27) is arranged on lock sleeve (25) by sealing shroud two (26)。

3. the safety door switch of compact electromagnetic according to claim 1 locking fine motion detection, it is characterized in that: described rearmounted slide block (7) middle part is provided with two microswitch one (8) in parallel, middle part the distribution microswitch two (12) of two back-to-back installations, the microswitch three (13) of preposition slide block (11), above-mentioned microswitch contact is all towards slide block end。

4. the safety door switch of compact electromagnetic according to claim 1 locking fine motion detection, it is characterised in that: having release shaft (31) in the hollow structure of described elastic force block (32), it is arch that release shaft (31) is positioned at the partial cross section of elastic force block (32)。

5. the safety door switch of compact electromagnetic according to claim 4 locking fine motion detection, it is characterised in that: the circular arc central angle of described arch is less than 180 degree。

6. the safety door switch of compact electromagnetic according to claim 1 locking fine motion detection, it is characterized in that: camb cap (2) insert port inserts end more than latch (3), with induction port, all there is installing hole (34) four sides of housing, and latch (3) insert port has two places。