CN219577040U - Novel cylinder inductive switch - Google Patents

Abstract

The utility model relates to a novel cylinder induction switch, which is provided with a support body, a detection slide block, a spherical magnet, a U-shaped photoelectric switch and a circuit board, wherein the detection slide block is correspondingly arranged in a linear slideway of the support body, a convex induction part is arranged on the detection slide block, the spherical magnet is embedded on the detection slide block in a rotatable mode, and the detection slide block is driven to slide by being attracted and pulled by the spherical magnet; the U-shaped photoelectric switch is used for detecting and outputting a switch signal in cooperation with the sensing part on the detection slider; the circuit board is used for receiving the switching signal of the U-shaped photoelectric switch and outputting a control signal for detecting and controlling the work of the air cylinder. Compared with the prior device with the same function, the device has the advantages of precise induction, accurate judgment, strong universality, compact and small overall structure, convenient combination to the cylinder for use, accurate induction of the working stroke of the cylinder piston and guarantee of the normal operation of equipment.

Description

Novel cylinder inductive switch

Technical Field

The utility model relates to the technical field of cylinder control, in particular to cylinder stroke induction control in the fields of various automatic equipment and tool fixtures.

Background

At present, the induction range of the domestic magnetic reed induction switch is about 5mm, and the following defects exist in the actual use:

when the cylinder needs accurate location, current reed switch can't accomplish.

Because the piston stroke of the finger cylinder or other clamping type cylinder is very short, the piston stroke is often smaller than the induction range of the magnetic reed switch (the cylinder stroke is assumed to be only 3mm, the range of the existing inductor is 5mm, and effective induction cannot be performed), whether the cylinder is effectively clamped or not cannot be detected, and the normal operation of equipment is affected.

Disclosure of Invention

The utility model aims to provide a novel cylinder induction switch which can accurately sense the stroke of a cylinder, is suitable for being applied to working scenes with higher requirements, and is convenient to install and use.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a novel cylinder sensing switch, comprising:

the support body is provided with a linear slideway;

the detection sliding block is correspondingly arranged in the linear slideway of the support body and is supported by a reset system for guiding the detection sliding block to reset in the forward and reverse directions; the detection sliding block is provided with a convex induction part, and the induction part is provided with a detection groove;

the spherical magnet is embedded on the detection slide block in a rotatable mode, and the detection slide block is driven to slide by being attracted and pulled by the spherical magnet;

the U-shaped photoelectric switch is positioned and installed on the support body and is used for detecting and outputting a switch signal by matching with the sensing part on the detection sliding block;

the circuit board is arranged on the support body and is electrically connected with the U-shaped photoelectric switch, and the circuit board is used for receiving the switching signal of the U-shaped photoelectric switch and outputting a control signal for detecting and controlling the cylinder to work.

The technical scheme is that the support body is a horizontal structure body, and is also provided with a mounting groove which is arranged above the linear slideway and is communicated with the linear slideway up and down; the sensing part of the detection sliding block protrudes into the mounting groove, the U-shaped photoelectric switch and the circuit board are mounted in the mounting groove of the supporting body, the U-shaped photoelectric switch is provided with a light channel with a downward opening, the sensing part of the detection sliding block protrudes into the light channel, and light rays of the U-shaped photoelectric switch penetrate through the detection groove on the sensing part.

The scheme is that the reset system comprises a first spring and a second spring, wherein the first spring and the second spring are assembled in the linear slideway and respectively prop against two ends of the detection sliding block; the support body is also provided with a unidirectional control piece which is used for controlling the detection sliding block to move in the telescopic area of the first spring or the second spring.

The technical scheme is that the unidirectional control piece comprises a stirring button and a C-shaped limiting block which are connected together, wherein the stirring button is attached to the outer side surface of the support body and realizes stirring; the two ends of the C-shaped limiting block are used for propping up the sensing part of the detection sliding block, so that the movement direction of the detection sliding block is controlled and the movement distance of the detection sliding block is limited.

The above scheme is further that the detection slider is a convex structure body, the lower part of the detection slider is embedded in the linear slideway, and a spherical groove is arranged in the middle of the lower part of the detection slider and used for installing and positioning the spherical magnet.

The scheme is that the support body is provided with a tubular part which is embedded in a mounting groove on the surface of the cylinder and is locked by a mounting screw, so that the support body is connected with the cylinder; the piston rod of the cylinder is provided with a ring magnet, the ring magnet moves along with the piston rod and attracts the spherical magnet, and the detection sliding block is driven to slide by attracting the spherical magnet to move.

The scheme is that a bearing step is arranged in the mounting groove of the support body, a fixing buckle is arranged on the side wall of the mounting groove, the bearing step supports the circuit board by using a tool, and the fixing buckle is matched with the side edge of the bearing step voltage clamping circuit board; the support step is also provided with a positioning column protruding upwards, and the positioning column is inserted into a preset positioning hole on the circuit board, so that the circuit board can be aligned and installed; and an upper cover is also assembled on the support body, and the mounting groove is covered by the upper cover to establish a packaging state.

By adopting the structure, compared with the prior device with the same function, the device has the advantages of precise induction, accurate judgment, strong universality, compact and small overall structure, convenient combination to the cylinder for use, accurate induction of the power stroke of the cylinder piston and guarantee of the normal operation of the equipment in the use scene of various cylinders.

Drawings

FIG. 1 is a schematic perspective view of a preferred embodiment of the present utility model;

FIG. 2 is an exploded view of the embodiment of FIG. 1;

FIG. 3 is a schematic diagram showing the combination of internal structures of the embodiment of FIG. 1;

FIG. 4 is a schematic diagram showing the combination of the peripheral structures of the detecting slider in the embodiment of FIG. 1;

FIG. 5 is an exploded view of the structure of FIG. 4;

FIG. 6 is a schematic illustration of the present utility model as used in connection with a cylinder;

FIG. 7 is an exploded view of the structure of FIG. 6;

fig. 8, 9, 10 and 11 are schematic views of the working state of the utility model.

Detailed Description

The conception, specific structure, and technical effects of the present utility model will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present utility model.

It should be noted that, in the description of the present utility model, terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or components must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 7, which are schematic views of a preferred embodiment of the present utility model, the present utility model relates to a novel cylinder induction switch, which comprises: the detection device comprises a support body 1, a detection slide block 2, a spherical magnet 3, a U-shaped photoelectric switch 4 and a circuit board 5; except the spherical magnet, other parts are made of non-magnetic materials, such as plastic, stainless steel and the like, so that the working accuracy and stability of the utility model are ensured.

The support body 1 is suitable for being combined to the air cylinder 100 or other scenes, and can be matched and installed by changing the shape of the support body 1 in order to match different air cylinders or scenes, and the detailed description is omitted. The support body 1 of the embodiment is a horizontal structure body and provides a combined installation space and an installation support; the support body 1 is provided with a linear slide 11, and the linear slide 11 extends along the horizontal direction of the support body 1. In this embodiment, for convenience in processing and manufacturing, the linear slideway 11 is constructed by a stainless steel conduit, the stainless steel conduit is combined with the supporting body 1 to form a tubular part 14, the tubular part 14 is embedded in a mounting groove 101 on the surface of the cylinder 100 and locked by a mounting screw 102, so that the supporting body 1 is connected with the cylinder 100, the mounting groove 101 is a common groove structure on the surface of the cylinder 100, no additional processing is required, and the linear slideway has a simple structure and is convenient to install. The detection slide block 2 is correspondingly arranged in the linear slideway 11 of the support body 1 and is supported by a reset system for guiding the detection slide block 2 to reset in the forward and reverse directions; the detecting slide block 2 is provided with a convex sensing part 21, and the sensing part 21 is provided with a detecting groove 22, wherein the detecting groove 22 is in the form of a through hole and is positioned in the middle area of the sensing part 21. The spherical magnet 3 is embedded on the detection slide block 2 in a rotatable mode, and the detection slide block 2 is driven to slide by being attracted and pulled by the spherical magnet 3. The U-shaped photoelectric switch 4 is positioned and installed on the support body 1, and the U-shaped photoelectric switch 4 is used for detecting and outputting a switching signal in cooperation with the sensing part 21 on the detection slide block 2; the circuit board 5 is installed on the support body 1 and is electrically connected with the U-shaped photoelectric switch 4, and the circuit board 5 is used for receiving the switching signal of the U-shaped photoelectric switch 4 and outputting a control signal for detecting and controlling the operation of the air cylinder 100. In this embodiment, a ring magnet 104 is disposed on a piston rod 103 of the cylinder 100, the ring magnet 104 moves along with the piston rod 103 and attracts a spherical magnet 3, the spherical magnet 3 is attracted to move to drive the detection slider 2 to slide, and the U-shaped photoelectric switch 4 senses the sliding of the detection slider 2 and outputs a switch signal. The circuit board 5 outputs a control signal according to the switch signal, thereby controlling the operation of the cylinder 100, accurately sensing the power stroke of the cylinder piston and ensuring the normal operation of the equipment. In this embodiment, an LED indicator light 51 is further provided on the circuit board 5 to give a bright light prompt. When the U-shaped photoelectric switch 4 effectively works, the circuit board 5 can be set to work: 1) Output signal: after 0.3s of delay (which can be modified by a program), the switch acts, and the switch is disconnected without delay. 2) LED indicator light: the lamp is lightened after the delay time is 0.3s (which can be modified by a program), the lamp is disconnected without the delay time, and the lamp is not lightened without shielding. In practical application, the time delay lighting is not required, so that the effect of instant indication is achieved, and the specific situation is set according to the actual requirement.

In this embodiment, the support body 1 is further provided with a mounting groove 12, and the mounting groove 12 is above the linear slideway 11 and is vertically communicated with the linear slideway 11; the sensing part 21 of the detection slide block 2 protrudes into the mounting groove 12, the U-shaped photoelectric switch 4 and the circuit board 5 are mounted in the mounting groove 12 of the support body 1, the U-shaped photoelectric switch 4 is provided with a light path groove 41 with a downward opening, the sensing part 21 of the detection slide block 2 protrudes into the light path groove 41, and light rays of the U-shaped photoelectric switch pass through the detection groove 22 on the sensing part 21. The working principle of the specific U-shaped photoelectric switch 4 is the prior art and will not be described here in detail. In this embodiment, for easy installation and combination, the installation groove 12 of the support body 1 is partitioned by implanting the partition plate 8, so that two independent areas, namely an induction area and a wiring area, are obtained along the extending direction of the linear slideway 11, and the U-shaped photoelectric switch 4 is placed in the induction area and is correspondingly positioned and limited by the installation groove 12, so as to achieve stable installation. The wiring area is used for connecting the lead 9 with the circuit board 5, so that the wiring is convenient, the structure is compact, the lead 9 is a four-core wire, and the device is supplied with power and output signals. In this embodiment, a support step 15 is further disposed in the mounting groove 12 of the support body 1, a fixing buckle 16 is disposed on a side wall of the mounting groove 12, the support step 15 supports the circuit board 5 with a labor support, and the fixing buckle 16 cooperates with the support step 15 to clamp a side edge of the circuit board 5; the bearing step 15 is also provided with a positioning column 151 protruding upwards, and the positioning column 151 is inserted into a preset positioning hole on the circuit board 5, so that the circuit board can be aligned and installed; the support body 1 is also provided with an upper cover 7, and the upper cover 7 covers the mounting groove 12 to establish a packaged state. In the figure, the upper cover 7 is buckled with the support body 1, and sleeve joints are respectively arranged on the upper cover 7 and the support body 1 and used for sleeving the stainless steel guide pipe, and positioning and limiting the stainless steel guide pipe.

The reset system comprises a first spring 61 and a second spring 62, wherein the first spring 61 and the second spring 62 are assembled in the linear slideway 11 and respectively prop up two ends of the detection sliding block 2, so that the detection sliding block 2 has positive and negative sliding and reset effects; preferably, the first spring 61 and the second spring 62 have identical structural shapes, so that detection control is facilitated. In this embodiment, the support body 1 is further provided with a unidirectional control member 13, and the unidirectional control member 13 is used for controlling the movement of the detection slider 2 in the telescopic area of the first spring 61 or the second spring 62. The unidirectional control piece 13 comprises a toggle button 131 and a C-shaped limiting block 132 which are connected together, the toggle button 131 is attached to the outer side face of the support body 1 and is used for toggling, the toggle button 131 is connected with the C-shaped limiting block 132 in a detachable mode through a screw and the like, and therefore convenience in manufacturing and assembly is achieved. The C-shaped limiting block 132 is placed in the mounting groove 12 of the support body 1 and moves by stirring the stirring button 131, and two ends of the C-shaped limiting block 132 are used for propping up the sensing part 21 of the detection sliding block 2, so that the movement direction of the detection sliding block 2 is controlled, the movement distance of the detection sliding block 2 is limited, and the switching working form is obtained. In this embodiment, in order to further increase the working stability and reliability, the inner side wall of the mounting groove 12 is provided with corresponding positioning ribs 121, and the corresponding side surface of the C-shaped limiting block 132 is provided with positioning grooves 1321, so that the positioning ribs 121 and the positioning grooves 1321 are used to position the C-shaped limiting block 132, so as to better prop up the detecting slider 2. In this embodiment, the detecting slider 2 is a convex structure, the lower part of the detecting slider 2 is embedded in the linear slideway 11, a spherical groove 23 is arranged in the middle of the lower part of the detecting slider 2, the spherical groove 23 is used for installing and positioning the spherical magnet 3, the spherical magnet 3 can freely rotate in the spherical groove 23, so that the polarity of the annular magnet on each cylinder piston is random, and the spherical magnet can be mutually attracted with the annular magnet on the cylinder piston through self-rotation adjustment.

For a better description of the function of the present utility model, reference is made to fig. 8 to 11, which illustrate the following by co-action with a cylinder:

when the device senses the forward (uniformly defined as the right side in the figure) running stroke of the cylinder, the detailed working steps are decomposed and described as follows:

firstly, the unidirectional control piece 13 is pulled out to be consistent with the direction of the cylinder to be sensed, and the specific operation is that the toggle button 131 is toggled to drive the C-shaped limiting block 132 to move, and the corresponding end of the C-shaped limiting block 132 props against the sensing part 21 of the detection sliding block 2, so that the movement direction of the detection sliding block 2 is controlled and the movement distance of the detection sliding block 2 is limited.

1. When the cylinder does not operate, the ring magnet 104 is positioned on the left side of the spherical magnet 3, and the spherical magnet can freely rotate in the spherical groove 23 of the detection slider 2, and the spherical magnet can be attracted with the ring magnet in the cylinder no matter whether the ring magnet of the cylinder is of N pole or S pole, so the spherical magnet is attracted leftwards by the ring magnet, but the detection slider is not operated because the one-way control member 13 blocks, and the U-shaped photoelectric switch does not detect a shielding signal because the spherical magnet cannot move, and at the moment, the light of the U-shaped photoelectric switch passes through the detection slider.

2. When the cylinder piston moves forward (assuming that the piston rod moves forward by 3mm at this time) and aligns with the spherical magnet, the attractive force received by the spherical magnet is maximum at this time, and the light of the U-shaped photoelectric switch can still pass through the detection groove of the detection slider, that is, the U-shaped photoelectric switch does not detect a shielding signal.

3. When the cylinder piston continues to run forward, as the annular magnet and the spherical magnet are attracted to each other, the annular magnet drives the spherical magnet and the detection slide block to run forward against the resistance of the first spring 61, as shown in fig. 9, assuming that the optical line width of the U-shaped photoelectric switch is 0.2mm, the width K1 of the detection slot on the detection slide block is 0.6mm, the width K2 of the detection strips on two sides of the detection slot is 0.5mm, and when the detection slide block runs forward by 0.4mm, the calculation mode is as follows: (0.6 mm of the detection groove-0.2 mm of the light of the U-shaped photoelectric switch)/0.2 mm of the light of the 2+ light is completely blocked, at the moment, the cylinder moves forwards for 3mm+0.4mm=3.4mm, the light of the U-shaped photoelectric switch is completely blocked by the detection strip, the LED indicator light is lightened after 0.3 seconds, the switch action (the time is assumed to be 0.3 seconds because of the blocking delay action of the circuit design, the blocking delay is not carried out because of the blocking delay of the circuit), the light of the U-shaped photoelectric switch still can be blocked by the detection strip when the piston moves forwards for 0.3mm (the cylinder piston moves for 3.7 mm), the blocking stroke is effectively blocked by the detection strip, the blocking stroke can be interpreted as the sensing stroke or the sensing precision of the device, the circuit detects the signal and the corresponding action (the LED indicator light is lightened after 0.3 seconds, the switch action) within the range of the 0.3mm stroke. After 0.3 seconds, the signal output is carried out on the lead, and from the above, the induction stroke or the induction precision can be changed by changing the light of the U-shaped photoelectric switch and the widths of the three parameters of the detection groove and the detection strip. If the cylinder runs for 3.4-3.7mm and is limited induction stroke in actual work, the device is fixed at the position by using the mounting screw 102.

4. If the cylinder piston runs by 3.4-3.7mm to form a working stroke of the pressed product, the product is not in place due to various problems at the moment, the cylinder continues to run forward at the moment, the annular magnet drives the spherical magnet and the detection sliding block to overcome the resistance of the first spring and continue to run forward, after the detection strip passes through the light of the U-shaped photoelectric switch, the light of the U-shaped photoelectric switch is not shielded at the moment, the LED indicator light is extinguished, the signal output on the lead 9 is stopped, the switch is reset, and the phenomenon that the product is not detected at the moment is represented, and corresponding actions are performed by trigger equipment or other various devices so as to avoid accidents.

5. When the cylinder piston continues to move forwards, the annular magnet on the cylinder drives the spherical magnet and the detection sliding block to overcome the resistance of the first spring and move forwards, at the moment, the detection sliding block does not move forwards any more because of the blocking of the corresponding end support of the C-shaped limiting block 132 or the limiting point of the supporting body 1, at the moment, the LED indicator lamp is kept to be extinguished, no signal is output on the lead 9, and the switch is kept to be reset.

6. When the cylinder piston continues to move forward, the detection slide block is blocked, as shown in fig. 11, the detection slide block 2 is limited by the unidirectional control piece D1 and the support body D2, so that the detection slide block cannot move forward any more, at the moment, the annular magnet of the cylinder is farther and farther from the spherical magnet and the detection slide block, the magnetic force of mutual attraction is weaker and weaker, when the force of the first spring 61 is larger than that of the annular magnet and the spherical magnet, the detection slide block is quickly reset under the action of the first spring, the corresponding end support of the C-shaped limiting block 132 stops returning to the original position, in the resetting process, the detection strip can quickly pass through the light of the U-shaped photoelectric switch, but the LED indicator lamp is kept to be extinguished due to the fact that the blocking time is smaller than 0.3 seconds, no signal is output on the guide wire, and the switch is kept to be reset.

7. When the cylinder piston finishes moving forwards and retreats backwards, the spherical magnet is briefly attracted by the cylinder ring magnet, but under the action of the first spring and the blocking of the corresponding end support of the C-shaped limiting block 132, the detection sliding block does not move any more, and the cylinder piston and the device return to the original positions for the next work.

The above description is directed to the area of the first spring 61, and similarly, when the cylinder moves backward (collectively defined as the left side in the figure), the unidirectional control member 13 is operated to pull out the unidirectional control member to be consistent with the direction of the cylinder to be sensed, so as to perform a selection operation, and the detection slider slides in the area of the second spring 62, and the specific movement operation is as described above, so that the cylinder sensing control is achieved.

Compared with the prior device with the same function, the device has the advantages of precise induction, accurate judgment, strong universality, compact and small overall structure, convenient combination to the cylinder for use, accurate induction of the working stroke of the cylinder piston and guarantee of the normal operation of equipment.

While the preferred embodiments of the present utility model have been described above with reference to the accompanying drawings, the present utility model should not be limited to the exact same structure and operation as described above and illustrated, but many equivalent modifications and changes may be made to the above embodiments by one skilled in the art without departing from the spirit and scope of the utility model, through logic analysis, reasoning or limited experimentation, and all such modifications and changes are believed to be within the scope of the utility model as claimed.

Claims (7)

1. A novel cylinder induction switch, characterized by comprising:

the support body (1), there is straight slide way (11) on the support body (1);

the detection sliding block (2) is correspondingly arranged in the linear slideway (11) of the support body (1) and is supported by a reset system for guiding the detection sliding block (2) to reset in the forward and reverse directions; the detection sliding block (2) is provided with a convex induction part (21), and the induction part (21) is provided with a detection groove (22);

the spherical magnet (3) is embedded on the detection slide block (2) in a rotatable mode, and the detection slide block (2) is driven to slide by the attraction and traction of the spherical magnet (3);

the U-shaped photoelectric switch (4) is positioned and installed on the support body (1), and the U-shaped photoelectric switch (4) is used for detecting and outputting a switch signal in cooperation with the sensing part (21) on the detection sliding block (2);

the circuit board (5), circuit board (5) are installed on supporter (1) and with U type photoelectric switch (4) electric connection, and circuit board (5) are used for receiving the switching signal of U type photoelectric switch (4) and output control signal for detect and control cylinder (100) work.

2. The novel cylinder induction switch according to claim 1, wherein the support body (1) is a horizontal structure body, the support body (1) is further provided with a mounting groove (12), and the mounting groove (12) is arranged above the linear slideway (11) and is communicated with the linear slideway (11) up and down; the sensing part (21) of the detection slide block (2) protrudes into the mounting groove (12), the U-shaped photoelectric switch (4) and the circuit board (5) are mounted in the mounting groove (12) of the support body (1), the U-shaped photoelectric switch (4) is provided with a light path groove (41) with a downward opening, the sensing part (21) of the detection slide block (2) protrudes into the light path groove (41), and light rays of the U-shaped photoelectric switch penetrate through the detection groove (22) on the sensing part (21).

3. The novel cylinder induction switch according to claim 1, wherein the reset system comprises a first spring (61) and a second spring (62), and the first spring (61) and the second spring (62) are assembled in the linear slideway (11) and respectively prop up the two ends of the detection sliding block (2); the support body (1) is also provided with a unidirectional control piece (13), and the unidirectional control piece (13) is used for controlling the detection sliding block (2) to move in the telescopic area of the first spring (61) or the second spring (62).

4. A novel cylinder induction switch according to claim 3, characterized in that the unidirectional control member (13) comprises a toggle button (131) and a C-shaped limiting block (132) which are connected together, the toggle button (131) is attached to the outer side surface of the support body (1) and is used for toggling; the two ends of the C-shaped limiting block (132) are used for supporting the sensing part (21) of the detection sliding block (2), so that the movement direction of the detection sliding block (2) is controlled and the movement distance of the detection sliding block (2) is limited.

5. The novel cylinder induction switch according to any one of claims 1 to 4, wherein the detecting slider (2) is a convex structure, the lower part of the detecting slider (2) is embedded in the linear slideway (11), and a spherical groove (23) is arranged in the middle of the lower part of the detecting slider (2), and the spherical groove (23) is used for installing and positioning the spherical magnet (3).

6. A novel cylinder induction switch according to claim 2, characterized in that the support body (1) is provided with a tubular part (14), the tubular part (14) is embedded in a mounting groove (101) on the surface of the cylinder (100) and locked by a mounting screw (102), so that the support body (1) is connected with the cylinder (100); a ring magnet (104) is arranged on a piston rod (103) of the cylinder (100), the ring magnet (104) moves along with the piston rod (103) and attracts a spherical magnet (3), and the detection sliding block (2) is driven to slide by attracting the spherical magnet (3) to move.

7. The novel cylinder induction switch according to claim 2, wherein a bearing step (15) is arranged in the mounting groove (12) of the support body (1), a fixed buckle (16) is arranged on the side wall of the mounting groove (12), the bearing step (15) supports the circuit board (5) by using a supporting tool, and the fixed buckle (16) is matched with the bearing step (15) to clamp the side edge of the circuit board (5); the support step (15) is also provided with a positioning column (151) protruding upwards, and the positioning column (151) is inserted into a preset positioning hole on the circuit board (5) so that the circuit board can be aligned and installed; an upper cover (7) is also assembled on the support body (1), and the upper cover (7) covers the mounting groove (12) to establish a packaging state.