CN118553564B - Magnetic latching relay - Google Patents

Abstract

The present invention relates to a magnetic latching relay, and relates to the technical field of relays, which includes a base, a coil support arranged on the base, and an iron core inside the coil support, and also includes an adsorption yoke and a connecting yoke arranged on the base, the adsorption yoke and the connecting yoke are arranged in one piece, a magnet and a spacer are arranged on the adsorption yoke, the spacer is installed between the coil support and the magnet, the magnet is located on the side of the adsorption yoke close to the coil support, and the magnet generates magnetic force between the connecting yoke and the iron core; the spacer is used to separate the coil and the magnet on the coil support, and a fixing device for the magnet is arranged on the spacer, the spacer is clamped and fixed with the adsorption yoke, and the magnet, the spacer and the adsorption yoke are in close contact with each other. The present invention has the effect that when the power is turned on and then off, the iron core can still continue to adsorb the armature through the magnetic force generated by the magnet, so that the device can continue to work when the power is off.

Description

A magnetic latching relay

Technical Field

The present invention relates to the technical field of relays, and in particular to a magnetic latching relay.

Background Art

A relay is an electrical control device. When the coil of the relay is excited by current, a magnetic field is generated to close or disconnect its switch components. At the same time, the relay uses its own magnetism to maintain the switch state and maintain the switch state with a small current.

In the prior art, the main components of an electromagnetic relay include an electromagnet, an armature, a moving contact and a stationary contact. An electromagnetic force is generated in the electromagnet core by inputting a signal (voltage or current) to attract the armature, thereby causing the contact to move to achieve opening, closing or switching control.

When a device that needs to be controlled by a relay is working, once an emergency such as a power outage occurs, the electromagnetic relay will lose its electromagnetic force, causing the moving contact and the static contact of the relay to separate, resulting in a power outage on the device controlled by the relay and the inability to complete the ongoing work.

Summary of the invention

In order to solve the problem that the equipment can continue to work when the power is off, the present invention provides a magnetic latching relay.

In a first aspect, a magnetic latching relay provided by the present invention adopts the following technical solution:

A magnetic holding relay includes a base, a coil support arranged on the base, and an iron core inside the coil support, and also includes an adsorption yoke and a connecting yoke arranged on the base, the adsorption yoke and the connecting yoke are arranged integrally, a magnet and a spacer are arranged on the adsorption yoke, the spacer is installed between the coil support and the magnet, the magnet is located on the side of the adsorption yoke close to the coil support, and the magnet causes the connecting yoke and the iron core to generate magnetic force.

By adopting the above technical solution, by installing a magnet on the adsorption yoke, the adsorption yoke and the connecting yoke, which are integrated with each other, generate magnetic force, thereby causing the iron core connected to the connecting yoke to generate magnetic force. When the coil is energized to cause the iron core to generate electromagnetic force to adsorb the armature and the coil is powered off, the iron core can still continue to adsorb the armature through the magnetic force generated by the magnet, so that the equipment can continue to work when the power is off.

Optionally, a clamping column is provided on one side of the iron core close to the base, and the connecting yoke is provided with a clamping groove for clamping the clamping column.

By adopting the above technical solution, the clamping column arranged on the iron core is inserted into the clamping groove arranged on the connecting yoke for clamping and fixing, thereby fixing the iron core on the connecting yoke, and increasing the contact area between the iron core and the connecting yoke, so that the magnetic force generated by the magnet on the adsorption yoke and the connecting yoke can be better transmitted to the iron core.

Optionally, a fixing column is provided on one side of the spacer close to the adsorption yoke, and the adsorption yoke is provided with a fixing groove for the fixing column to be inserted and fixed.

By adopting the above technical solution, the fixing column arranged on the spacer is inserted into and fixed in the fixing groove arranged on the adsorption yoke, and the spacer is fixed on the adsorption yoke, so that the spacer is not easy to fall off, and the installation and replacement are convenient.

Optionally, the fixing device includes at least two mounting plates for clamping and fixing the magnet up and down.

By adopting the above technical solution, at least two mounting plates are arranged on the spacer to clamp the magnet, so that when the magnet is adsorbed on the adsorption yoke, the magnet is not easy to move on the adsorption yoke at will, so that the magnetic force generated on the yoke and the core is not easy to change.

In a second aspect, the present invention provides a method for determining the magnetic force of a magnetic latching relay, which adopts the following technical solution:

A method for determining the magnetic force of a magnetic latching relay, comprising:

Get relay model information;

Determine the spring force value, core magnetic conductivity, yoke magnetic conductivity and armature pressure value according to the relay model information;

Calculate the sum of the core magnetic conductivity and the yoke magnetic conductivity and define it as the comprehensive magnetic conductivity;

According to the compression spring force value and the armature pressure value, the separation magnetic force value of the magnet preset in the armature separation state is calculated; according to the compression spring force value and the armature pressure value, the attraction magnetic force value of the magnet preset in the armature attraction state is calculated;

The magnetic force range of the magnet is calculated by analyzing the separation magnetic force value, the attraction magnetic force value and the comprehensive magnetic conductivity;

Determine target magnet specifications based on magnetic force range.

By adopting the above technical solution, the range of magnetic force required for the armature to be separated and attracted from the iron core under the action of the compression spring is calculated and analyzed through the relay model, so as to obtain the specification parameters of the magnet that can be used according to the magnetic force range, thereby ensuring that when the coil is energized to make the iron core generate electromagnetic force to attract the armature and the coil is powered off, the iron core can still continue to attract the armature through the magnetic force generated by the magnet, so that the equipment can continue to work when the power is off.

Optionally, the target magnet specification includes a target magnetic strength value and a target adsorption area value of the magnet. The verification method of the target magnet specification is:

Determine the upper limit of magnetization under unit thickness according to the target adsorption area value;

According to the magnetization upper limit value, the target magnetic strength value and the target adsorption area value, the target thickness value is matched from the preset magnet specification database;

Determine whether the target thickness value is greater than a preset reference thickness value between the spacer and the adsorption yoke;

If it is not greater than, the target thickness value is used as the thickness of the magnet, and the target number value of the magnet corresponding to the target thickness value is obtained;

Determine whether the target quantity value is less than the preset reference quantity value;

If it is less than, an alarm is issued, and it is determined whether the target quantity value is less than one;

If it is not less than one, the magnet corresponding to the target thickness value is selected and magnetized with the target magnetic strength value to complete the calibration.

By adopting the above technical solution, the target thickness value of the target magnet specification is matched from the preset magnet specification database. When the target thickness value of the target magnet specification is within the reference thickness value, the target thickness value is used as the thickness of the magnet and the target quantity value of the magnet is obtained. When the target quantity value is less than the reference quantity value, an alarm is issued. When the target quantity value is greater than the reference quantity value and the target quantity value is greater than one, the magnet corresponding to the target thickness value is selected and magnetized with the target magnetic strength value. The magnetic force generated thereby continuously adsorbs the armature, so that the device can continue to work when the power is off.

Optional, when the target quantity value is less than one, the magnetization calibration method:

If the target quantity value is less than one, it is determined whether the magnetization upper limit value of the target magnet specification is less than a preset reference magnetization value;

If it is less than, the thinnest magnet is selected according to the preset magnet specification database and magnetized with the target magnetic strength value to complete the calibration;

If it is not less than, at least two magnets are matched according to the magnetization amount corresponding to the target thickness value and the preset magnet specification database, and the two magnets are longitudinally attracted and superimposed on each other;

Definition: At least two magnets that are matched and longitudinally attracted to each other and superimposed are called superimposed magnets, and the total thickness of the superimposed magnets is the superimposed thickness value;

Analyzing the superimposed magnets and a preset magnetic loss database to determine the superimposed magnetic loss value of the superimposed magnets;

Determine whether the stacking thickness value of the stacked magnets is greater than the reference thickness value;

If it is not greater than, the two magnets are magnetized separately according to the magnetization value corresponding to the superimposed thickness value to complete the verification.

By adopting the above technical solution, when the target number value of the target magnet specification is matched is less than one, it means that there is no magnet that directly meets the target magnetic value at this time, and it is necessary to determine whether the upper limit value of magnetization is less than the preset reference magnetization value. When the upper limit value of magnetization is less than the preset reference magnetization value, the thinnest magnet is selected from the preset magnet specification database and magnetized with the target magnetic strength value. When the upper limit value of magnetization is greater than the preset reference magnetization value, the magnets are obtained for longitudinal superposition, and the magnetic strength value and superposition magnetic loss value of the superimposed magnets are calculated. When and only when the superposition thickness value is not greater than the reference thickness value, the magnets whose magnetic force generated by the superimposed magnets reaches the target magnetic strength value are magnetized, and the required magnetic value is achieved by superposition of the available magnets to continuously adsorb the armature, so that the device can continue to work when the power is off.

Optionally, when the superimposed thickness value is greater than the reference thickness value, the magnetization calibration method is:

If the stacked thickness value is greater than the reference thickness value, the quotient of the reference adsorption area value and the target adsorption area value is calculated, and the quotient is defined as the maximum number of magnets;

Determine magnets with a number of magnets greater than or equal to the maximum number of magnets from a magnet specification database, and define them as a spliced magnet group, and the spliced magnet group has a splicing thickness, and arrange the spliced magnet group in reverse order according to the splicing thickness;

Determine a virtual magnetic force intensity value according to a target magnetic force intensity value and a preset loss magnetic force value;

Calculate the quotient of the virtual magnetic strength value and the maximum number of blocks, and define it as using the magnetic strength value;

The virtual thickness is determined by matching the virtual magnetic strength value with the magnet specification database;

Select magnets with thickness greater than or equal to the virtual thickness from the splicing thickness, arrange the selected magnets in reverse order, and define the thinnest magnet as the used magnet;

The magnet to be used is magnetized according to the magnetic strength value to be used.

By adopting the above technical solution, when the stacking thickness value is greater than the reference thickness value, the magnet stacking cannot meet the magnetic strength value. Therefore, the maximum number of blocks in the flat state is calculated and arranged in reverse order of thickness according to different splicing thicknesses to form different splicing magnet groups. The virtual thickness is calculated according to the target magnetic strength value, and the used magnets are matched from the splicing magnet group, and then the used magnets are magnetized to achieve the required magnetic value, so that the equipment can continue to work when the power is off.

Optional, when the splicing thickness is greater than the virtual thickness, the magnet calibration method:

Select the thinnest magnet from the splicing thickness according to the virtual thickness and define it as a splicing magnet group, where the splicing magnet group includes the splicing thickness;

Determine the saturated patchwork magnetic force value based on the patchwork thickness;

Calculate the quotient of the target magnetic intensity value and the saturated patchwork magnetic intensity value, and determine the minimum number of patchwork blocks based on the obtained quotient value;

According to the preset placement rules, the minimum number of splicing blocks is analyzed with the preset placement database to calculate the magnetic force consumption value;

Calculate the sum of the target magnetic strength value and the consumed magnetic strength value, and define the obtained sum value as the patchwork magnetic strength value;

The assembled magnet group is magnetized according to the assembled magnetic force value.

By adopting the above technical solution, the thinnest splicing magnet group is selected to determine the saturated splicing magnetic value, the minimum number of splicing blocks and the consumed magnetic value are calculated, and the thinnest splicing magnet group is magnetized with the target magnetic strength value, so that the equipment can continue to work.

Optionally, after magnetizing the assembled magnet group, the magnet calibration method is:

Get the weight detection information of the magnet;

Determine whether the weight detection information of the magnet is consistent with the preset magnet weight specification;

If they are inconsistent, the suction value is determined according to the weight value of the magnet after magnetization, and the preset suction cup is controlled to adsorb the magnet according to the suction value and transport it to the waste area;

If they are consistent, the image detection information of the magnet is obtained;

Determine whether the image detection information of the magnet is consistent with the preset magnet image;

If they are inconsistent, the suction value is determined according to the weight value of the magnet after magnetization, and the preset suction cup is controlled to adsorb the magnet according to the suction value and transport it to the waste area;

If they are consistent, the verification is completed.

By adopting the above technical solution, after the magnet is magnetized, there may be special circumstances such as damage during the process. Qualified magnets can be selected by setting weight and image detection information, thereby ensuring the quality of the magnets used. In summary, the present invention includes at least one of the following beneficial technical effects:

1. By installing a magnet on the adsorption yoke, the adsorption yoke and the connecting yoke, which are integrated as one, generate magnetic force, so that the iron core connected to the connecting yoke generates magnetic force at the same time. When the coil is energized to make the iron core generate electromagnetic force to adsorb the armature and the coil is powered off, the iron core can still continue to adsorb the armature through the magnetic force generated by the magnet, so that the equipment can continue to work when the power is off;

2. The clamping column arranged on the iron core is inserted into the clamping groove arranged on the connecting yoke for clamping and fixing, thereby increasing the contact area with the yoke, so that the magnetic force is better transmitted, and the fixing column arranged on the spacer is inserted into and fixed in the fixing groove arranged on the adsorption yoke, so that the spacer is not easy to fall off, and it is convenient for installation and replacement;

3. The range of magnetic force required for the armature to be separated and attracted from the iron core under the action of the compression spring can be calculated and analyzed through the relay model, so as to obtain the specification parameters of the magnet that can be used according to the range of magnetic force, thereby ensuring that when the coil is energized to make the iron core generate electromagnetic force to attract the armature and the coil is powered off, the iron core can still continue to attract the armature through the magnetic force generated by the magnet, so that the equipment can continue to work when the power is off.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a magnetic latching relay according to an embodiment of the present invention.

FIG. 2 is an exploded view of a magnet, a core and a yoke according to an embodiment of the present invention.

FIG. 3 is a flow chart of a method for determining the magnetic force of a magnetic latching relay according to an embodiment of the present invention.

FIG. 4 is a flow chart of a method for verifying target magnet specifications according to an embodiment of the present invention.

5 is a flow chart of a method for verifying magnetization when a target quantity value is less than one according to an embodiment of the present invention.

FIG. 6 is a flow chart of a method for verifying magnetization when the stacking thickness value is greater than the reference thickness value according to an embodiment of the present invention.

FIG. 7 is a flow chart of a magnet calibration method when the splicing thickness is greater than the virtual thickness according to an embodiment of the present invention.

FIG. 8 is a flow chart of a magnet calibration method after magnetizing a spliced magnet group according to an embodiment of the present invention.

The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. base; 2. coil bracket; 3. iron core; 4. adsorption yoke; 5. connecting yoke; 6. magnet; 7. spacer; 8. mounting plate; 9. coil; 10. armature; 11. compression spring; 12. clamping column; 13. clamping groove; 14. fixing column; 15. fixing groove.

DETAILED DESCRIPTION

The present invention is further described in detail below in conjunction with Figures 1-8 and embodiments.

1 , an embodiment of the present invention discloses a magnetic latching relay, including a base 1 , a coil support 2 , an iron core 3 , an adsorption yoke 4 , a connecting yoke 5 and an armature 10 .

1 and 2, the adsorption yoke 4 and the connection yoke 5 are integrally arranged and perpendicular to each other, the connection yoke 5 is horizontally mounted on the base 1, and the adsorption yoke 4 is vertically mounted in a preset groove of the base 1. A clamping column 12 is integrally arranged on one side of the iron core 3 close to the connection yoke 5, and a clamping groove 13 is provided on the connection yoke 5 for the clamping column 12 to be inserted and fixed. The iron core 3 is fixed to the connection yoke 5 by inserting and fixing the clamping column 12 into the clamping groove 13.

Referring to Figures 1 and 2, a coil 9 is sleeved on the coil support 2. When the coil 9 is energized, an electromagnetic force is generated for the iron core 3, so that the iron core 3 can adsorb the armature 10. The coil support 2 is sleeved on the iron core 3, and the coil support 2 is fixed on the base 1. At this time, the connecting yoke 5 is between the coil support 2 and the base 1. The armature 10 is installed on the side of the adsorption yoke 4 away from the coil support 2. The side of the adsorption yoke 4 away from the coil support 2 is installed with a compression spring 11 for driving the armature 10 to rebound when pressed down. The compression spring 11 is located below the armature 10. When the coil 9 is energized, the coil 9 causes the iron core 3 to generate magnetic force and overcome the elastic force of the compression spring 11 to adsorb the armature 10 until it contacts. At this time, the compression spring 11 is deformed by force, and the armature 10 controls the moving contact on the base 1 to contact the static contact to achieve the conduction of the circuit. When the coil 9 is not energized, the iron core 3 does not generate magnetic force. At this time, the compression spring 11 is not subjected to force and returns to its original state to drive the armature 10 to rebound, thereby separating the armature 10 and the iron core 3 that are in contact with each other. At this time, the armature 10 controls the moving contact and the static contact on the base 1 to separate, thereby disconnecting the line.

Referring to Figures 1 and 2, a magnet 6 is installed on the side of the adsorption yoke 4 close to the iron core 3. The material of the adsorption yoke 4 and the connecting yoke 5 is iron or other materials that can be magnetized by the magnet 6. The magnet 6 is adsorbed on the adsorption yoke 4, and the magnet 6 magnetizes the mutually connected adsorption yoke 4, the connecting yoke 5 and the iron core 3 to generate magnetic force. In the case of power failure, the iron core 3 can continue to adsorb the armature 10 through the generated magnetic force, so that the equipment can continue to work when the power is off.

1 and 2, a spacer 7 for fixing the magnet 6 is installed on the side of the adsorption yoke 4 close to the iron core 3, and the magnet 6 is separated from the iron core 3 by the spacer 7, so that the magnet 6 is not easily attracted to the iron core 3 and moved. A fixing column 14 is integrally provided below the spacer 7 close to the side of the adsorption yoke 4, and a fixing groove 15 for the fixing column 14 to be inserted and fixed is provided on the adsorption yoke 4. The spacer 7 and the adsorption yoke 4 are fixed by inserting the fixing column 14 into the fixing groove 15. In this embodiment, the spacer 7 is stepped, and the thickness of the spacer 7 close to the adsorption yoke 4 is greater than the thickness of the spacer 7 away from the adsorption yoke 4, so as to facilitate the fixing of the magnet 6 and reduce the overall volume occupied by the magnet 6 and the spacer 7.

2, a fixing device for fixing the magnet 6 is provided on the side of the spacer 7 close to the adsorption yoke 4, and the fixing device includes at least two mounting plates 8 for clamping the magnet 6 up and down, so that the magnet 6 is not easy to move after being adsorbed on the adsorption yoke 4. In this embodiment, a total of four mounting plates 8 are provided and divided into two groups and symmetrically distributed up and down.

The implementation principle of a magnetic latching relay in an embodiment of the present invention is as follows: when the magnetic latching relay is energized, current passes through the coil 9 to cause the iron core 3 to generate electromagnetic force to attract the armature 10 until it abuts against it, thereby allowing the device provided with the magnetic latching relay to work; when the magnetic latching relay is de-energized, the iron core 3 continues to attract the armature 10 through the magnetic force generated by the magnet 6, thereby allowing the device to continue to work when the power is off.

3 , based on the same inventive concept, an embodiment of the present invention provides a method for determining the magnetic force of a magnetic latching relay, comprising the following steps:

Step S100: Obtain relay model information.

The relay model information refers to the parameters and specifications of the relay model. The relay model information is determined by scanning the barcode on each relay with a camera and matching it from a relay database that pre-stores the shape features of each relay model, or by scanning the shape features of each relay with a camera and matching it from a relay database that pre-stores the shape features of each relay model.

Step S101: Determine the spring force value, the core magnetic conductivity, the yoke magnetic conductivity and the armature pressure value according to the relay model information.

The spring force value refers to the force value corresponding to the elastic potential energy generated after the spring 11 is deformed. The spring force value is determined by the model and specification of the spring 11 used in the relay model. The core magnetic conductivity force refers to the magnetizing force generated by the core 3 after the magnetic force of the magnet 6 is applied. The core magnetic conductivity force is determined by the model and specification of the core 3 used in the relay model. The yoke magnetic conductivity force refers to the magnetizing force generated by the yoke after the magnetic force of the magnet 6 is applied. The yoke magnetic conductivity force is determined by the model and specification of the adsorption yoke 4 and the connection yoke 5 used in the relay model.

The armature pressing value is divided into two states: one is the armature pressing value in the instantaneous state, which refers to the force value when the end of the armature 10 is driven to move and begin to contact the iron core 3, and the other is the armature pressing value in the continuous state, which refers to the force value when the armature 10 keeps contacting the iron core 3. It is determined by the model of the armature 10 used by the relay model, the armature pressing value in the instantaneous state, the armature pressing value in the continuous state, and the sum of the elastic force values corresponding to the model of the compression spring 11.

Step S102, calculating the sum of the core magnetic conductivity and the yoke magnetic conductivity, and defining it as the comprehensive magnetic conductivity.

The comprehensive magnetic conductivity force refers to the magnetizing force generated by the iron core 3, the adsorption yoke 4 and the connecting yoke 5 after being subjected to the magnetic force of the magnet 6. The comprehensive magnetic conductivity force is determined by calculating the sum of the magnetizing forces generated by the iron core 3, the adsorption yoke 4 and the connecting yoke 5 after being subjected to the magnetic force of the magnet 6.

Step S103, analyze the compression spring force value and the armature pressure value to calculate the separation magnetic force value of the magnet 6 preset in the separated state of the armature 10; analyze the compression spring force value and the armature pressure value to calculate the attraction magnetic force value of the magnet 6 preset in the attracted state of the armature 10.

The separation state refers to the state where the armature 10 and the iron core 3 are not in contact, and the attraction state refers to the state where the armature 10 and the iron core 3 are in continuous contact. The separation magnetic force value refers to the magnetic force value when the iron core 3 can just actively absorb the armature 10 and move it toward the iron core 3 in the separation state of the armature 10. The separation magnetic force value is determined by calculating the sum of the spring force value and the armature pressure value in the instantaneous state. The attraction magnetic force value refers to the magnetic force value generated by the iron core 3 that can keep the armature 10 in the attraction state. The attraction magnetic force value is determined by calculating the sum of the spring force value and the armature pressure value in the continuous state.

Step S104 , analyzing the separation magnetic force value, the attraction magnetic force value and the comprehensive magnetic conductivity to calculate the magnetic force range of the magnet 6 .

The magnetic force range refers to the range of separation magnetic force value and attraction magnetic force value generated by the magnet 6 on the iron core 3 when the power is off. The maximum value of the magnetic force range is obtained by calculating the separation magnetic force value through the comprehensive magnetic conductivity, and the minimum value of the magnetic force range is obtained by calculating the attraction magnetic force value through the comprehensive magnetic conductivity.

Step S105, determining the target magnet specification based on the magnetic force range.

The target magnet specification refers to the specification of the magnet 6 that satisfies the magnetic force value required for the core 3 to continuously adsorb the armature 10. The magnet specification database pre-stores the specifications of each magnet 6 and the corresponding adsorption area, thickness, magnetization upper limit value, magnetic strength value, quantity and weight. The magnet specification database can be formed by the operator pre-setting each specification of the magnet 6 and storing it, or it can be retrieved by querying the website related to the magnet 6. The specifications of the magnet 6 are retrieved and matched from the magnet specification database through the magnetic force value within the magnetic force range.

In step S105 shown in FIG. 3 , in order to further ensure the rationality of the target magnet specifications, it is necessary to perform further separate analysis and calculation on the target magnet specifications, which is specifically described in detail through the steps shown in FIG. 4 .

4, the method for verifying the target magnet specification includes the following steps:

Step S200, determining the upper limit of magnetization under unit thickness according to the target adsorption area value.

The target magnet specification includes the target magnetic strength value and the target adsorption area value of the magnet 6. The target magnetic strength value refers to the magnetic strength value required for the core 3 to continuously adsorb the armature 10, and the target magnetic strength value is obtained by matching the target magnet specification from the magnet specification database.

The target adsorption area value refers to the area value of the magnet and the adsorption yoke 4 required for the iron core 3 to continuously adsorb the armature 10. The adsorption area of the magnet 6 is obtained by matching from the magnet specification database through the target magnet specification. The upper limit value of magnetization refers to the magnetization amount of the volume corresponding to the unit thickness of the adsorption area value of the magnet 6 and the adsorption yoke 4 under the magnetic saturation state. The upper limit value of magnetization is obtained by matching from the magnet specification database through the target magnet specification, thereby selecting the corresponding magnet 6 specification.

Step S201, matching a target thickness value from a preset magnet specification database according to a magnetization upper limit value, a target magnetic strength value and a target adsorption area value.

The target thickness value is the thickness value of the magnet required for the core 3 to continuously adsorb the armature 10. The target thickness value is matched from the magnet specification database through the target area value, the magnetization upper limit value and the target magnetic strength value, so as to select the corresponding specifications of the magnet 6.

Step S202 , determining whether the target thickness value is greater than a preset reference thickness value between the spacer 7 and the adsorption yoke 4 .

The reference thickness value refers to the installation space reserved for the magnet 6 when the spacer 7 and the adsorption yoke 4 are fixedly installed. By judging whether the target thickness value is greater than the reference thickness value, it is judged whether the specification of the magnet 6 corresponding to the target thickness value can be installed between the spacer 7 and the adsorption yoke 4.

Step S203: If it is not greater than, the target thickness value is used as the thickness of the magnet 6, and the target quantity value of the magnet 6 corresponding to the target thickness value is obtained.

The target quantity value refers to the number of magnets 6 of different specifications that are required for the iron core 3 to continuously adsorb the armature 10. The number of magnets 6 is matched from the magnet specification database through the target magnetic strength value. When the target thickness value is not greater than the reference thickness value, the target thickness value is set to the thickness of the magnet 6. At the same time, the target quantity value of the magnet 6 that needs to be installed corresponding to the thickness of the magnet 6 is obtained, thereby selecting the corresponding specification of the magnet 6.

Step S204, determining whether the target quantity value is less than a preset reference quantity value.

The reference quantity value refers to the minimum value of the target magnet specification quantity obtained from the magnet specification database. The minimum value of the target magnet specification quantity is used to check whether the warehouse has enough target magnet specifications. By judging whether the target quantity value is less than the preset reference quantity value, it is judged whether the warehouse has enough target magnet specifications to reach the target magnetic strength value, and then the quantity of the corresponding magnet 6 specifications is selected.

Step S205: If it is less than, an alarm is issued and it is determined whether the target quantity value is less than one.

When the target quantity value is less than the preset reference quantity value, an alarm is issued to remind the warehouse to replenish the target magnet specification quantity. By judging whether the target quantity value is less than one, it is judged whether there is a magnet 6 specification that meets the magnetic force value required for the iron core 3 to continuously adsorb the armature 10.

Step S206, if it is not less than 1, then the magnet 6 corresponding to the target thickness value is selected and magnetized with the target magnetic strength value to complete the verification.

When the target quantity value is not less than one, it indicates that the required magnet 6 specification can be selected, and the calibration is completed by selecting the magnet 6 corresponding to the target thickness value from the magnet specification database and magnetizing it with the magnetic force value required for the core 3 to continuously adsorb the armature 10.

After step S205 shown in FIG. 4 , in order to further ensure the rationality of the target quantity value, it is necessary to perform further separate analysis and calculation on the target quantity value, which is specifically described in detail through the steps shown in FIG. 5 .

5 , when the target quantity value is less than one, the calibration method for magnetizing the magnet 6 comprises the following steps:

Step S300, if the target quantity value is less than one, it is determined whether the magnetization upper limit value of the target magnet specification is less than a preset reference magnetization value.

The reference magnetization value refers to the minimum magnetization value of the magnet 6 in the magnet specification database after magnetization. When the target quantity value is less than one, by judging whether the magnetization upper limit value of the target magnet specification is less than the preset reference magnetization value, it is judged whether to select a magnet 6 in the magnet specification database to magnetize with the magnetization upper limit value of the target magnet specification so that the magnet 6 reaches the target magnetic strength value.

Step S301, if it is less than, then select the thinnest magnet 6 according to the preset magnet specification database and magnetize it with the target magnetic strength value to complete the verification.

When the magnetization upper limit value of the target magnet specification is less than the preset reference magnetization value, it means that a thinnest magnet 6 that meets the requirements can be directly selected from the magnet specification database to magnetize at the magnetization upper limit value, so as to reach the target magnetic strength value and complete the calibration.

Step S302: if it is not less than, at least two magnets 6 are matched according to the magnetization upper limit value corresponding to the target thickness value and the preset magnet specification database, and are longitudinally attracted and superimposed on each other.

Longitudinal attraction refers to superimposed attraction along the thickness direction of the magnet 6. When the upper limit value of the magnetization of the target magnet specification is not less than the preset reference magnetization value, it means that at least two magnets 6 with the same adsorption area need to be selected from the magnet specification database for longitudinal adsorption and superposition, so that the magnetic force value of the superimposed magnet 6 reaches the target magnetic force strength value.

Step S303, analyzing the superimposed magnets and a preset magnetic loss database to determine the superimposed magnetic loss value of the superimposed magnets.

A superimposed magnet refers to at least two magnets 6 that are longitudinally attracted to each other and superimposed on each other. The superimposed magnets are determined by selecting from a magnet specification database. A superimposed magnetic loss value refers to the loss value of the magnetic force after a number of magnets 6 are superimposed. The magnetic loss database pre-stores the magnetic loss values corresponding to the specifications of each magnet 6 under different installation conditions and installation positions. The magnetic loss database can be formed by the operator pre-setting the magnetic loss data and storing it, or it can be retrieved by querying a website related to the magnet 6. The superimposed magnetic loss value is determined by matching the loss value in the magnetic loss database by the number of superimposed magnets 6, so that the magnetic force value of the magnet 6 after superposition can more accurately reach the target magnetic strength value.

Step S304, determining whether the stacking thickness value of the stacked magnets is greater than the reference thickness value.

The stacking thickness value refers to the total thickness of the magnet after stacking. By judging whether the stacking thickness value of the stacked magnet is greater than the reference thickness value, it is possible to judge whether the stacked magnet can be within the installation space reserved for the magnet 6 when the spacer 7 and the adsorption yoke 4 are fixedly installed.

Step S305: if it is not greater than, the two magnets 6 are magnetized respectively according to the magnetization value corresponding to the superimposed thickness value to complete the verification.

When the stacking thickness of the stacked magnets is not greater than the reference thickness, it means that the stacked magnets can be installed. By analyzing the thickness of the stacked magnets, when the thickness of the stacked magnets is the same, it means that the stacked magnets 6 can be magnetized equally to reach the target magnetic strength value. When the thickness of the stacked magnets is different, it means that the stacked magnets can be magnetized separately to reach the target magnetic strength value.

After step S304 shown in FIG. 5 , in order to further ensure the rationality of the stacking thickness value, it is necessary to perform further separate analysis and calculation on the stacking thickness value, which is specifically described in detail through the steps shown in FIG. 6 .

6 , when the stacked thickness value is greater than the reference thickness value, the magnetization calibration method of the magnet 6 includes the following steps:

Step S400 , if the stacked thickness value is greater than the reference thickness value, the quotient of the reference adsorption area value and the target adsorption area value is calculated, and the quotient is defined as the maximum number of magnets 6 .

The reference adsorption area value refers to the area on the adsorption yoke 4 that can be used to mount and adsorb the magnet 6 , and the reference adsorption area value is determined by the yoke model. The maximum number of magnets refers to the maximum number of magnets 6 that can be mounted on the adsorption yoke 4 .

When the stacking thickness value is greater than the reference thickness value, it means that the target magnetic strength value cannot be achieved by stacking magnets. The maximum number of blocks is determined by calculating the quotient of the adsorption area value of the magnet 6 installed on the adsorption yoke 4 and the target adsorption area value.

Step S401, determining from the magnet specification database the magnets 6 whose number is greater than or equal to the maximum number of magnets 6, and defining them as a spliced magnet group, wherein the spliced magnet group has a splicing thickness, and arranging the spliced magnet group in reverse order according to the splicing thickness.

The spliced magnet group refers to a magnet group formed by splicing magnets 6 with the same area as the target adsorption area value and a number greater than or equal to the maximum number of magnets that can be installed on the adsorption yoke 4, which are retrieved from the magnet specification database. The individual magnets in the spliced magnet group are arranged by horizontal adsorption from bottom to top along the height of the adsorption yoke, and the spliced magnet groups with different thickness values are retrieved from the magnet specification database and arranged from thin to thick.

Step S402: determining a virtual magnetic strength value according to a target magnetic strength value and a preset loss magnetic strength value.

The loss magnetic force value refers to the magnetic force value of the spliced magnet group loss. The loss magnetic force value matches the loss magnetic force value from the magnetic loss database at different installation positions of the spliced magnet group. The virtual magnetic force strength value refers to the total magnetic force strength value generated by the spliced magnet group arranged in a horizontal adsorption manner. The virtual magnetic force strength value is determined by calculating the sum of the total magnetic force values generated by the spliced magnet group.

Step S403, calculating the quotient of the virtual magnetic strength value and the maximum number of blocks, and defining it as the used magnetic strength value.

The magnetic strength value used refers to the magnetic strength value corresponding to any one magnet 6 in the spliced magnet group, and the magnetic strength value used is determined by the quotient of the total magnetic strength value of the spliced magnet group and the maximum number of magnets.

Step S404, matching the virtual magnetic strength value with the magnet specification database to determine the virtual thickness.

Virtual thickness refers to the thickness of the magnets arranged in a transverse adsorption manner that meets the target magnetic strength value. The virtual thickness is determined by calculating the total magnetic value of the magnets 6 arranged in a transverse splicing manner and the quotient of the maximum number of magnets, and then retrieving the obtained quotient from the magnet specification database to determine the thickness of the magnets 6.

Step S405, selecting magnets with a thickness greater than or equal to the virtual thickness from the splicing thickness, arranging the selected magnets 6 in reverse order, and defining the magnet 6 with the thinnest thickness as the used magnet.

Using magnets means selecting and using magnets 6 arranged transversely on the adsorption yoke. The magnets to be used are determined by selecting the thinnest splicing magnet group with a thickness greater than or equal to the virtual thickness from the splicing magnet groups with different thickness values and arranging them transversely from bottom to top.

Step S406, magnetizing the magnet according to the magnetic strength value.

The selected magnet is magnetized by using the magnetic strength value, so that the magnetic strength value of the magnet reaches the target magnetic strength value.

After step S404 shown in FIG. 6 , in order to further ensure the rationality of the splicing thickness, it is necessary to perform further separate analysis and calculation on the splicing thickness, which is specifically described in detail through the steps shown in FIG. 7 .

7 , when the splicing thickness is greater than the virtual thickness, the calibration method of the magnet 6 includes the following steps:

Step S500, selecting the thinnest magnet 6 from the spliced thickness according to the virtual thickness and defining it as a spliced magnet group, wherein the spliced magnet group includes the spliced thickness.

The patchwork magnet group refers to the thinnest magnet group in the patchwork magnet group whose thickness is greater than the virtual thickness, and the patchwork thickness refers to the thickness value of the patchwork magnet group. The patchwork magnet group is retrieved from different patchwork magnet groups with thickness values ranging from thin to thick to find the thinnest patchwork magnet group greater than the virtual thickness and use it as the patchwork magnet group. The patchwork thickness is determined after selecting the patchwork magnet group.

Step S501, determining a saturated splicing magnetic value according to the splicing thickness.

The saturated patchwork magnetic force value refers to the magnetic force value of any magnet in the patchwork magnet group under the saturated magnetization state. The corresponding upper limit of magnetization is queried from the magnet database through the patchwork thickness and the area of the patchwork magnet group and used as the saturated patchwork magnetic force value.

Step S502, calculating the quotient of the target magnetic strength value and the saturated splicing magnetic strength value, and determining the minimum number of splicing blocks according to the obtained quotient value.

The minimum number of splicing blocks refers to the number of magnets required to assemble a magnet group to achieve a target magnetic strength value, which is determined by calculating the quotient of the target magnetic strength value and the saturated splicing magnetic strength value.

Step S503, analyzing the minimum number of splicing blocks and the preset placement database according to the preset placement rule to calculate the magnetic force consumption value.

The placement rule refers to the arrangement of the magnet 6 in the adsorption yoke, and the consumed magnetic force value refers to the magnetic force value consumed by the assembled magnet group under the preset placement rule. The placement rule is retrieved from a placement database that pre-stores the placement rule. In this embodiment, the placement rule is to place the magnet 6 in a bottom-up and lateral absorption arrangement. When the magnet 6 needs to be reduced, it is reduced from the top. The consumed magnetic force value is determined by retrieving the magnetic force value from the magnetic loss database by the arrangement of the assembled magnet group from bottom to top and lateral absorption.

Step S504, calculating the sum of the target magnetic strength value and the consumed magnetic strength value, and defining the obtained sum as the assembled magnetic strength value.

The assembled magnetic force value refers to the total magnetic force value of the assembled magnet group, which is determined by calculating the sum of the target magnetic force value and the consumed magnetic force value.

Step S505, magnetizing the assembled magnet group according to the assembled magnetic force value.

The assembled magnet group is magnetized by the assembled magnetic force value to achieve the target magnetic force strength value.

In step S505 shown in FIG. 7 , in order to further ensure the rationality of the assembled magnet group, it is necessary to perform further separate analysis and calculation on the assembled magnet group, which is specifically described in detail through the steps shown in FIG. 8 .

8, after magnetizing the assembled magnet group, the calibration method of the magnet 6 includes the following steps:

Step S600, obtaining weight detection information of the magnet 6.

The magnetized magnet 6 is subsequently inspected and installed through a preset conveying device, which may be a conveyor belt. The weight detection information refers to the weight value corresponding to the magnetized magnet 6, which is detected and obtained by a weight detection device arranged on the conveying device. The weight detection device may be a mass sensor preset on each area on the conveyor belt for placing the magnet 6.

Step S601, determining whether the weight detection information of the magnet 6 is consistent with the preset magnet weight specification.

The magnet weight specification refers to the weight corresponding to the target magnet specification, and the magnet weight specification is determined by obtaining the target magnet specification from the magnet specification database. By judging whether the weight detection information of the magnet 6 is consistent with the preset magnet weight specification, it is judged whether the magnet 6 consistent with the preset magnet weight specification can be selected, thereby ensuring that the magnetic force of the magnet 6 remains unchanged.

Step S602, if they are inconsistent, determine the suction value according to the weight value of the magnet 6 after magnetization, and control the preset suction cup to adsorb the magnet 6 according to the suction value, and transport it to the waste area.

The suction cup is preset above the conveying device and is used to transport the unqualified magnet 6 to the waste area. The suction value refers to the force value required to control the suction cup to adsorb the magnet 6 and transport it to the waste area. The suction value is determined by the weight value of the magnet 6. When the weight detection information of the magnet 6 is inconsistent with the preset magnet weight specification, it means that the weight of the magnet 6 is unqualified and cannot be used. The weight of the magnet 6 is detected by the weight detection device, and the suction value corresponding to the transportation of the magnet 6 is analyzed and determined. The suction value is then transmitted to the suction cup, and the suction cup is controlled to adsorb the unqualified magnet 6 and transport it to the waste area, thereby screening out the magnet 6 with qualified weight.

Step S603: if they are consistent, the image detection information of the magnet 6 is obtained.

The image detection information refers to the surface image of the magnet 6 that has passed the weight detection. The image detection information is determined by obtaining the image detection device preset above the conveying device. The image detection information can be detected and obtained by the camera preset above each area on the conveyor belt for placing the magnet 6. When the weight detection information of the magnet 6 is consistent with the preset magnet weight specification, it means that the weight of the magnet 6 is qualified. At this time, the surface image of the magnet 6 is obtained by the image detection device.

Step S604, determining whether the image detection information of the magnet is consistent with the preset magnet image.

The magnet image refers to a magnet image that does not affect the target magnetic strength value. The magnet image is determined by the presence of scratches and other factors that do not affect the magnetic value corresponding to the target magnet specification. By judging whether the image detection information of the magnet 6 is consistent with the preset magnet image, it is judged whether the magnet 6 has defects, thereby ensuring the quality of the qualified magnet 6.

Step S605, if they are inconsistent, determine the suction value according to the weight value of the magnet 6 after magnetization, and control the preset suction cup to adsorb the magnet 6 according to the suction value, and transport it to the waste area.

When the image detection information of the magnet 6 is inconsistent with the preset magnet image, it means that the magnet 6 is unqualified. The weight of the magnet 6 is detected by the weight detection device, and the suction value corresponding to the transportation of the magnet 6 is analyzed and determined. The suction value is then transmitted to the suction cup, and the suction cup is controlled to adsorb the unqualified magnet 6 and transport it to the waste area, so as to further screen out the magnet 6 with a qualified image.

Step S606: If they are consistent, the verification is completed.

When the image detection information of the magnet 6 is consistent with the preset magnet image, the magnet 6 that has passed the appearance detection device can be directly installed and used after passing through the conveyor belt to complete the verification.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims (8)

1. A magnetic latching relay, comprising a base (1), a coil support (2) arranged on the base (1), and an iron core (3) inside the coil support (2), characterized in that: it also includes an adsorption yoke (4) and a connecting yoke (5) arranged on the base (1), the adsorption yoke (4) and the connecting yoke (5) are arranged in one piece, a magnet (6) and a spacer (7) are arranged on the adsorption yoke (4), the spacer (7) is installed between the coil support (2) and the magnet (6), the magnet (6) is located on the side of the adsorption yoke (4) close to the coil support (2), and the magnet (6) causes the connecting yoke (5) and the iron core (3) to generate magnetic force; The spacer (7) is used to separate the coil (9) on the coil support (2) and the magnet (6); a fixing device for the magnet (6) is provided on the spacer (7); the spacer (7) is fixedly engaged with the adsorption yoke (4); and the magnet (6), the spacer (7) and the adsorption yoke (4) are in close contact with each other; A method for determining the magnetic force of a magnetic latching relay, comprising: Get relay model information; Determine the spring force value, core magnetic conductivity, yoke magnetic conductivity and armature pressure value according to the relay model information; Calculate the sum of the core magnetic conductivity and the yoke magnetic conductivity and define it as the comprehensive magnetic conductivity; An analysis is performed based on the spring force value of the compression spring and the armature downward pressure value to calculate the separation magnetic force value of the magnet (6) preset when the armature (10) is in a separation state; an analysis is performed based on the spring force value of the compression spring and the armature downward pressure value to calculate the attraction magnetic force value of the magnet (6) preset when the armature (10) is in an attraction state; The magnetic force range of the magnet is calculated by analyzing the separation magnetic force value, the attraction magnetic force value and the comprehensive magnetic conductivity; Determine target magnet specifications based on magnetic force range; The target magnet specification includes the target magnetic strength value and the target adsorption area value of the magnet (6). The calibration method of the target magnet specification is as follows: Determine the upper limit of magnetization under unit thickness according to the target adsorption area value; According to the magnetization upper limit value, the target magnetic strength value and the target adsorption area value, the target thickness value is matched from the preset magnet specification database; Determining whether the target thickness value is greater than a reference thickness value between a preset spacer (7) and an adsorption yoke (4); If it is not greater than, the target thickness value is used as the thickness of the magnet (6), and the target number value of the magnet corresponding to the target thickness value is obtained; Determine whether the target quantity value is less than the preset reference quantity value; If it is less than, an alarm is issued, and it is determined whether the target quantity value is less than one; If it is not less than one, a magnet (6) corresponding to the target thickness value is selected and magnetized with the target magnetic strength value to complete the calibration. 2. The magnetic holding relay according to claim 1 is characterized in that a clamping column (12) is provided on the side of the iron core (3) close to the base (1), and the connecting yoke (5) is provided with a clamping groove (13) for clamping the clamping column (12). 3. The magnetic holding relay according to claim 1 is characterized in that a fixing column (14) is provided on one side of the spacer (7) close to the adsorption yoke (4), and the adsorption yoke (4) is provided with a fixing groove (15) for the fixing column (14) to be inserted and fixed. 4. The magnetic holding relay according to claim 1, characterized in that the fixing device comprises at least two mounting plates (8) for clamping and fixing the magnet (6) from top to bottom. 5. The magnetic latching relay according to claim 1, characterized in that when the target quantity value is less than one, the magnet magnetization verification method is: If the target quantity value is less than one, it is determined whether the magnetization upper limit value of the target magnet specification is less than a preset reference magnetization value; If it is less than, the thinnest magnet (6) is selected according to the preset magnet specification database and magnetized with the target magnetic strength value to complete the calibration; If it is not less than, at least two magnets (6) are matched according to the magnetization amount corresponding to the target thickness value and a preset magnet specification database, and the two magnets are longitudinally attracted and superimposed on each other; Definition: at least two magnets (6) that are matched and longitudinally attracted to each other and superimposed are called superimposed magnets, and the total thickness of the superimposed magnets is the superimposed thickness value; Analyzing the superimposed magnets and a preset magnetic loss database to determine the superimposed magnetic loss value of the superimposed magnets; Determine whether the stacking thickness value of the stacked magnets is greater than the reference thickness value; If it is not greater than, the two magnets (6) are magnetized respectively according to the magnetization value corresponding to the superimposed thickness value to complete the calibration. 6. The magnetic latching relay according to claim 5, characterized in that when the stacked thickness value is greater than the reference thickness value, the magnet magnetization verification method is: If the stacked thickness value is greater than the reference thickness value, the quotient of the reference adsorption area value and the target adsorption area value is calculated, and the quotient is defined as the maximum number of magnets (6); Determine from the magnet specification database the magnets (6) whose number is greater than or equal to the maximum number of magnets (6), and define them as a spliced magnet group, wherein the spliced magnet group has a splicing thickness, and arrange the spliced magnet group in reverse order according to the splicing thickness; Determine a virtual magnetic force intensity value according to a target magnetic force intensity value and a preset loss magnetic force value; Calculate the quotient of the virtual magnetic strength value and the maximum number of blocks, and define it as using the magnetic strength value; The virtual thickness is determined by matching the virtual magnetic strength value with the magnet specification database; Selecting magnets (6) greater than or equal to the virtual thickness from the splicing thickness, arranging the selected magnets (6) in reverse order, and defining the magnet (6) with the thinnest thickness as the used magnet; The magnet to be used is magnetized according to the magnetic strength value to be used. 7. The magnetic latching relay according to claim 6, characterized in that when the splicing thickness is greater than the virtual thickness, the calibration method of the magnet (6) is: Select the thinnest magnet from the splicing thickness according to the virtual thickness and define it as a splicing magnet group, where the splicing magnet group includes the splicing thickness; Determine the saturated patchwork magnetic force value based on the patchwork thickness; Calculate the quotient of the target magnetic intensity value and the saturated patchwork magnetic intensity value, and determine the minimum number of patchwork blocks based on the obtained quotient value; According to the preset placement rules, the minimum number of splicing blocks is analyzed with the preset placement database to calculate the magnetic force consumption value; Calculate the sum of the target magnetic strength value and the consumed magnetic strength value, and define the obtained sum value as the patchwork magnetic strength value; The assembled magnet group is magnetized according to the assembled magnetic force value. 8. The magnetic latching relay according to claim 7, characterized in that after magnetizing the assembled magnet group, the magnet (6) is calibrated by: Obtaining weight detection information of the magnet (6); Determining whether the weight detection information of the magnet (6) is consistent with the preset magnet weight specification; If they are inconsistent, the suction value is determined according to the weight value of the magnet (6) after magnetization, and the preset suction cup is controlled to adsorb the magnet according to the suction value, and transported to the waste area; If they are consistent, image detection information of the magnet (6) is obtained; Determining whether the image detection information of the magnet (6) is consistent with a preset magnet image; If they are inconsistent, the suction value is determined according to the weight value of the magnet (6) after magnetization, and the preset suction cup is controlled to adsorb the magnet (6) according to the suction value, and transported to the waste area; If they are consistent, the verification is completed.