CN116815426A

CN116815426A - Thread clamp, control method thereof, control unit and sewing electric control device

Info

Publication number: CN116815426A
Application number: CN202310786090.0A
Authority: CN
Inventors: 孙胜博; 韩成; 李春晓; 王富民
Original assignee: Suzhou Huichuan Control Technology Co Ltd
Current assignee: Suzhou Huichuan Control Technology Co Ltd
Priority date: 2023-06-29
Filing date: 2023-06-29
Publication date: 2023-09-29

Abstract

The invention discloses a thread clamp and a control method, a control unit and a sewing electric control device thereof, wherein the thread clamp comprises a shell, a driving mechanism, a first thread clamping piece, a pressure sensor and a second thread clamping piece; the driving mechanism is arranged on the shell and comprises a fixing part and a driving part; the first wire clamping piece is connected to the fixing part and provided with a wire clamping side; the pressure sensor is connected to the wire clamping side; the second wire clamping piece is positioned at one side of the pressure sensor, which is opposite to the first wire clamping piece, and is in transmission connection with the driving part; the pressure sensor is used for being electrically connected with the control unit, and the control unit is used for controlling the driving mechanism to work so that the driving part drives the second wire clamping piece to move towards or away from the first wire clamping piece. The technical scheme of the invention provides the wire clamping device capable of automatically adjusting the tightness of the clamping wires so as to meet the requirement of simplicity in operation of a user.

Description

Thread clamp, control method thereof, control unit and sewing electric control device

Technical Field

The invention relates to the technical field of sewing equipment, in particular to a thread clamp, a control method, a control unit and a sewing electric control device thereof.

Background

As is well known, the thread clamp is a key component on the sewing machine, and the main function is to apply a pressure to the sewing thread through the thread clamp so as to ensure smooth thread pulling of the sewing machine when the sewing machine is used for needle setting, but different cloth thicknesses and different needle setting speeds are used, the thread clamping tightness which is often required is different, and the thread clamping tightness is mainly adjusted by manually screwing a knob at present, so that the thread clamp is time-consuming and labor-consuming, has higher requirements on debugging experience of workers, and cannot meet the requirement of simple operation of users.

Disclosure of Invention

The invention provides a wire clamping device, which aims to provide a wire clamping device capable of automatically adjusting the tightness of clamping wires so as to meet the requirement of a user on simplicity in operation.

In order to achieve the above object, the present invention provides a wire clip, comprising:

a housing;

the driving mechanism is arranged on the shell and comprises a fixing part and a driving part;

the first wire clamping piece is connected to the fixing part and provided with a wire clamping side;

a pressure sensor connected to the wire clamping side;

the second wire clamping piece is positioned at one side of the pressure sensor, which is opposite to the first wire clamping piece, and is in transmission connection with the driving part;

the pressure sensor is used for being electrically connected with the control unit, and the control unit is used for controlling the driving mechanism to work so that the driving part drives the second wire clamping piece to move towards or away from the first wire clamping piece.

In an embodiment of the present invention, the fixing portion includes an iron core and a coil, the iron core is connected to the housing, the coil is wound around the iron core, and the first wire clip is connected to the iron core;

the driving part comprises an electromagnet, the electromagnet is sleeved on the iron core and is arranged opposite to the pressure sensor, and the second wire clamping piece is connected to one side, close to the pressure sensor, of the electromagnet;

the control unit is electrically connected to the coil and used for adjusting the magnitude and/or the direction of the current passing through the coil.

In an embodiment of the invention, the first wire clamping piece, the pressure sensor and the second wire clamping piece are all sleeved on the iron core.

In an embodiment of the invention, a limiting block is arranged on one side of the electromagnet, which is far away from the second wire clamping piece, the limiting block is connected to one end of the iron core, which is close to the electromagnet, and an elastic piece is arranged between the limiting block and the electromagnet.

In an embodiment of the invention, the elastic member is a tower-shaped spring, a tower tip of the tower-shaped spring is abutted against the limiting block, and a tower bottom of the tower-shaped spring is abutted against the electromagnet.

In an embodiment of the invention, the outer wall of the iron core near one end of the electromagnet is provided with an adjusting thread, and the limiting block is provided with an internal thread which is matched with the adjusting thread to adjust the distance between the limiting block and the electromagnet.

In an embodiment of the invention, an installation cavity is formed in the shell, and an installation port communicated with the installation cavity is formed in the shell;

part of the fixing part is positioned in the installation cavity, part of the fixing part extends out of the installation cavity from the installation opening, and the driving part, the first wire clamping piece, the pressure sensor and the second wire clamping piece are all positioned outside the installation cavity.

The invention also provides a control method of the wire clamp, which comprises the following steps:

setting a target pressure value required during sewing according to the thickness of the cloth and the needle setting speed;

acquiring an actual pressure value between the first wire clamping piece and the second wire clamping piece in real time through a pressure sensor, and transmitting the actual pressure value to a control unit;

comparing, by the control unit, the target pressure value with the actual pressure value:

when the actual pressure value is smaller than the target pressure value, the control unit controls the driving part to drive the second wire clamping piece to move towards the first wire clamping piece until the actual pressure value is equal to the target pressure value;

when the actual pressure value is larger than the target pressure value, the control unit controls the driving part to drive the second wire clamping piece to move away from the first wire clamping piece until the actual pressure value is equal to the target pressure value.

In an embodiment of the present invention, when the actual pressure value is smaller than the target pressure value, the control unit increases the current flowing through the coil to increase the attractive force of the coil and the electromagnet, so that the electromagnet drives the second wire clamping piece to move towards the first wire clamping piece until the actual pressure value is equal to the target pressure value;

when the actual pressure value is greater than the target pressure value, the control unit reduces the current flowing through the coil to reduce the attractive force of the coil and the electromagnet, so that the electromagnet drives the second wire clamping piece to move away from the first wire clamping piece until the actual pressure value is equal to the target pressure value.

In an embodiment of the present invention, when the first wire clamping piece and the second wire clamping piece are required to clamp wires, the control unit supplies a current which can generate electromagnetic polarity opposite to that of the electromagnet to the coil;

when the first wire clamping piece and the second wire clamping piece are required to be loosened, the control unit is used for leading current which can generate electromagnetic polarity identical to that of the electromagnet into the coil.

The invention also provides a control unit which adopts the control method of the wire clamp.

The invention also provides a sewing electric control device which comprises a control unit and the thread clamp, wherein the control unit is electrically connected with the pressure sensor of the thread clamp.

According to the wire clamping device, the pressure sensor is arranged between the first wire clamping piece and the second wire clamping piece, so that the actual pressure value between the first wire clamping piece and the second wire clamping piece is acquired in real time through the pressure sensor, and the actual pressure value is transmitted to the control unit, so that the control unit can compare the actual pressure value with the target pressure value.

When the actual pressure value is smaller than the target pressure value, the control unit controls the driving mechanism to work so that the driving part drives the second wire clamping piece to move towards the first wire clamping piece until the actual pressure value is equal to the target pressure value; when the actual pressure value is larger than the target pressure value, the control unit controls the driving mechanism to work, so that the driving part drives the second thread clamping piece to move away from the first thread clamping piece until the actual pressure value is equal to the target pressure value, thus, the real-time collection and adjustment of the pressure value between the first thread clamping piece and the second thread clamping piece can be automatically realized according to different cloth thicknesses and different needle feeding speeds, and the required thread clamping tightness can be automatically adjusted, thereby, in the sewing process, the thread tension can be adjusted to the tension value required by stable sewing in real time and accurately, and the manual knob screwing mode is replaced for adjustment, thereby meeting the requirement of a user for simple operation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a wire gripper according to an embodiment of the present invention;

FIG. 2 is an exploded view of one embodiment of the wire clamp of the present invention;

fig. 3 is a flowchart of an embodiment of a method for controlling a wire clamp according to the present invention.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Wire clamping device	22	Drive unit
10	Casing of machine	221	Electromagnet
				10a	Mounting opening	222	Limiting block
11	Connecting terminal	223	Elastic piece
				20	Driving mechanism	224	Gasket
21	Fixing part	30	First wire clamping piece
				211	Iron core	40	Pressure sensor
2111	Adjusting screw thread	50	Second wire clamping piece
				212	Coil	60	Torsional elastic piece
213	Winding post	200	Control unit

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

The present invention provides a wire clamping device 100, which aims to provide a wire clamping device 100 capable of automatically adjusting the tightness of clamping wires, so as to meet the requirement of simple operation of users.

The specific structure of the wire holder 100 of the present invention will be described below:

referring to fig. 1 and 2 in combination, in an embodiment of the present invention, the wire clip 100 includes a housing 10, a driving mechanism 20, a first wire clip 30, a pressure sensor 40, and a second wire clip 50; the driving mechanism 20 is arranged on the casing 10 and comprises a fixing part 21 and a driving part 22; the first wire clamping piece 30 is connected to the fixing portion 21 and has a wire clamping side; the pressure sensor 40 is connected to the wire clamping side; the second wire clamping piece 50 is positioned at one side of the pressure sensor 40, which is opposite to the first wire clamping piece 30, and is in transmission connection with the driving part 22;

the pressure sensor 40 is electrically connected to the control unit 200, and the control unit 200 is used for controlling the driving mechanism 20 to operate, so that the driving portion 22 drives the second wire clamping piece 50 to move towards or away from the first wire clamping piece 30.

It can be understood that in the wire clamping device 100 according to the present invention, the pressure sensor 40 is disposed between the first wire clamping piece 30 and the second wire clamping piece 50, so as to collect the actual pressure value between the first wire clamping piece 30 and the second wire clamping piece 50 in real time through the pressure sensor 40, and transmit the actual pressure value to the control unit 200, so as to compare the actual pressure value with the target pressure value through the control unit 200.

When the actual pressure value is smaller than the target pressure value, the control unit 200 controls the driving mechanism 20 to work, so that the driving part 22 drives the second wire clamping piece 50 to move towards the first wire clamping piece 30 until the actual pressure value is equal to the target pressure value; when the actual pressure value is greater than the target pressure value, the control unit 200 controls the driving mechanism 20 to operate, so that the driving portion 22 drives the second thread clamping piece 50 to move away from the first thread clamping piece 30 until the actual pressure value is equal to the target pressure value, thus, the real-time collection and adjustment of the pressure value between the first thread clamping piece 30 and the second thread clamping piece 50 can be automatically realized according to different cloth thicknesses and different needle feeding speeds, and the required thread clamping tightness can be automatically adjusted, so that the thread tension can be adjusted to the tension value required for stable sewing in real time and accurately in the sewing process, and the manual knob screwing mode is replaced for adjustment, thereby meeting the simple operation requirement of a user.

In some embodiments, the pressure sensor 40 may be a film pressure sensor 40, and the film pressure sensor 40 not only occupies a smaller space, but also has a high-precision detection effect, so that the precision of the wire clamping tightness required by automatic adjustment can be effectively improved.

In some embodiments, the control unit 200 may be electronically controlled for sewing.

In some embodiments, the outside of the cabinet 10 may be provided with a connection terminal 11 for electrical connection with the control unit 200 through the connection terminal 11.

In the practical application process, the driving mechanism 20 may be a structure in which a motor is matched with a transmission structure, specifically, the control unit 200 may control the motor to work, so as to drive the transmission structure to move through the motor, and further drive the second wire clamping piece 50 to move towards or away from the first wire clamping piece 30 under the action of the transmission structure; alternatively, the driving mechanism 20 may also include a structure that the coil 212 cooperates with the electromagnet 221, specifically, the control unit 200 may control the magnitude and/or the current direction of the current passing through the coil 212, that is, the electromagnet 221 may drive the second wire clamping piece 50 to move towards or away from the first wire clamping piece 30.

In the practical application process, the driving mechanism 20, the first wire clamping piece 30, the pressure wound sensor and the second wire clamping piece 50 may be all installed inside the casing 10, may be partially located inside the casing 10 and partially located outside the casing 10, may also be all installed outside the casing 10, and may be specific according to the actual use situation, and are not limited herein.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the present invention, the fixing portion 21 includes an iron core 211 and a coil 212, the iron core 211 is connected to the housing 10, the coil 212 is wound around the iron core 211, and the first wire clip 30 is connected to the iron core 211; the driving part 22 comprises an electromagnet 221, the electromagnet 221 is sleeved on the iron core 211 and is arranged opposite to the pressure sensor 40, and the second wire clamping piece 50 is connected to one side of the electromagnet 221, which is close to the pressure sensor 40; the control unit 200 is electrically connected to the coil 212 for adjusting the magnitude and/or direction of the current through the coil 212.

So set up, compare in adopting motor and transmission structure complex structure, through actuating mechanism 20 including coil 212 and electro-magnet 221 complex structure, can have higher adjustment accuracy. Specifically, when the actual pressure value is smaller than the target pressure value, the control unit 200 increases the current flowing through the coil 212 to increase the attractive force between the coil 212 and the electromagnet 221, i.e. the electromagnet 221 drives the second wire clamping sheet 50 to move towards the first wire clamping sheet 30 until the actual pressure value is equal to the target pressure value; when the actual pressure value is greater than the target pressure value, the control unit 200 decreases the current flowing through the coil 212 to decrease the attractive force between the coil 212 and the electromagnet 221, so that the electromagnet 221 drives the second wire clamping plate 50 to move away from the first wire clamping plate 30 until the actual pressure value is equal to the target pressure value.

When the first wire clamping piece 30 and the second wire clamping piece 50 are required to clamp a wire, the control unit 200 supplies current with electromagnetic polarity opposite to that of the electromagnet 221 to the coil 212, and at this time, the electromagnet 221 drives the second wire clamping piece 50 to face the first wire clamping piece 30 according to the principle of mutual attraction of opposite magnetic poles so as to clamp the wire; when the first wire clamping piece 30 and the second wire clamping piece 50 are required to be loosened, the control unit 200 supplies current with the same electromagnetic polarity as that of the electromagnet 221 to the coil 212, and at this time, the electromagnet 221 can drive the second wire clamping piece 50 to be far away from the first wire clamping piece 30 according to the principle that like magnetic poles repel each other, so as to achieve the purpose of loosening the wire.

In some embodiments, in order to ensure accuracy of data collected by the pressure sensor 40, a mounting platform may be convexly disposed on the wire clamping side of the first wire clamping piece 30, so that the pressure sensor 40 is mounted on the mounting platform of the first wire clamping piece 30, and specifically, the pressure sensor 40 may be fixedly connected to the first wire clamping piece 30 by adopting a bonding, welding or other manner.

In some embodiments, in order to ensure the connection stability between the electromagnet 221 and the second wire clamping piece 50, a mounting groove may be concavely formed on a side of the second wire clamping piece 50 facing away from the first wire clamping piece 30, so that the electromagnet 221 may be mounted in the mounting groove, and specifically, the electromagnet 221 may be fixedly connected to the second wire clamping piece 50 by adopting a bonding, welding or other manner.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the invention, the first wire clamping piece 30, the pressure sensor 40 and the second wire clamping piece 50 are all sleeved on the iron core 211.

So set up, through all overlapping first clamp 30, pressure sensor 40 and second clamp 50 on iron core 211, can guarantee that second clamp 50 keeps relatively steady state for when first clamp 30 moves to realize more accurate adjustment required clamp elasticity, can guarantee the installation stability of first clamp 30, pressure sensor 40 and second clamp 50 simultaneously.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the invention, a stopper 222 is disposed on a side of the electromagnet 221 away from the second wire clamping piece 50, the stopper 222 is connected to an end of the iron core 211 near the electromagnet 221, and an elastic member 223 is disposed between the stopper 222 and the electromagnet 221.

So set up, in the assembly process, the first clamp 30 is overlapped on the iron core 211 after being combined with the pressure sensor 40, and is fixed on the iron core 211, the second clamp 50 is overlapped on the iron core 211 after being combined with the electromagnet 221, the elastic piece 223 is overlapped on the iron core 211, and finally the limiting block 222 is connected to one end of the iron core 211 close to the electromagnet 221, namely the combination of the second clamp and the electromagnet 221 can be pressed on the combination of the first clamp 30 and the pressure sensor 40 through the elastic piece 223, and meanwhile, the initial pressure can be applied to the first clamp 30 and the second clamp 50.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the invention, the elastic member 223 is a tower-shaped spring, a tower tip of the tower-shaped spring abuts against the stopper 222, and a bottom of the tower-shaped spring abuts against the electromagnet 221.

Because the area of the electromagnet 221 is larger, and the area of the limiting block 222 is smaller, in this way, the tower tip of the tower-shaped spring is abutted against the limiting block 222, and the tower bottom of the tower-shaped spring is abutted against the electromagnet 221, so that the installation stability of the elastic piece 223 can be ensured, and meanwhile, more stable elastic force can be applied to the electromagnet 221 through the elastic piece 223.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the present invention, an outer wall of an end of the iron core 211 near the electromagnet 221 is disposed on the adjusting screw 2111, and the stopper 222 has an internal thread, and the internal thread cooperates with the adjusting screw 2111 to adjust a distance between the stopper 222 and the electromagnet 221.

So set up, in the assembly process, after establishing elastic component 223 cover on iron core 211, stopper 222 can compress tightly elastic component 223 through rotating along adjusting screw 2111 under the cooperation of self internal thread and adjusting screw 2111 to apply initial pressure to first clamp 30 and second clamp 50, can also adjust the distance between stopper 222 and electro-magnet 221 simultaneously, can adjust the initial pressure that elastic component 223 applyed to first clamp 30 and second clamp 50 as required.

In some embodiments, a spacer 224 may be disposed on a side of the stopper 222 near the elastic member 223, so that a side of the elastic member 223 far from the electromagnet 221 is connected to the spacer 224, so that friction between the stopper 222 and the elastic member 223 may be reduced during rotation of the stopper 222, so as to reduce abrasion of the elastic member 223.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the invention, the fixing portion 21 further includes a winding post 213, the winding post 213 is sleeved on the core 211, and the coil 212 is wound around the winding post 213.

In this way, during the assembly process, the coil 212 can be wound on the winding post 213, and then the winding post 213 wound with the coil 212 is sleeved on the iron core 211, so that the coil 212 can be more stably wound on the periphery of the iron core 211 through the winding post 213.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the present invention, the thread clamp 100 further includes a torsion elastic member 60, one end of the torsion elastic member 60 is connected to the casing 10, and the other end of the torsion elastic member 60 protrudes to the outside of the casing 10 for winding the upper thread to provide a pre-tightening tension to the upper thread.

So set up, in the assembly process, can pass between first clamp piece 30 and the second clamp piece 50 again after twining at least one round with the upper thread on torsion elastic component 60, like this, the upper thread can provide pretension to the upper thread through torsion elastic component 60 when the needle is down to guarantee the stability of needle down.

In practical applications, the torsion elastic member 60 may be a torsion spring, a torsion spring plate, or the like, which is not limited herein.

Further, referring to fig. 2 in combination, in an embodiment of the present invention, a mounting cavity is formed in the housing 10, and the housing 10 is provided with a mounting port 10a communicating with the mounting cavity; the part of the fixing portion 21 is located in the installation cavity, and the part of the fixing portion 21 extends out of the installation cavity from the installation opening 10a, and the driving portion 22, the first wire clamping piece 30, the pressure sensor 40 and the second wire clamping piece 50 are located outside the installation cavity.

So configured, by installing the partial fixing portion 21 of the driving mechanism 20 in the installation cavity of the casing 10, the partial fixing portion 21 can be protected, for example, the coil 212 can be protected, so as to prolong the service life of the wire clamp 100; in addition, by installing the part fixing portion 21, the driving portion 22, the first wire clamping piece 30, the pressure sensor 40, and the second wire clamping piece 50 outside the casing 10, the wire clamping can be facilitated, and the installation and maintenance of the part structure can be facilitated.

Referring to fig. 3 in combination, the present invention further provides a control method of the wire clip 100, where the control method includes:

s10, setting a target pressure value required during sewing according to the thickness of the cloth and the needle setting speed;

specifically, the target pressure value required for the current needle setting may be automatically calculated by the control unit 200 (sewing electric control) based on the non-thickness and the needle setting speed.

S20, acquiring an actual pressure value between the first wire clamping piece 30 and the second wire clamping piece 50 in real time through the pressure sensor 40, and transmitting the actual pressure value to the control unit 200;

after the pressure sensor 40 collects the actual pressure value between the first wire clamping piece 30 and the second wire clamping piece 50 in real time, the actual pressure value can be transmitted to the control unit 200 in a Bluetooth transmission mode.

S30, comparing the target pressure value with the actual pressure value by the control unit 200:

wherein, when the actual pressure value is smaller than the target pressure value, the control unit 200 controls the driving part 22 to drive the second wire clamping piece 50 to move towards the first wire clamping piece 30 until the actual pressure value is equal to the target pressure value;

when the actual pressure value is greater than the target pressure value, the control unit 200 controls the driving part 22 to drive the second clip 50 to move away from the first clip 30 until the actual pressure value is equal to the target pressure value.

So set up, just can realize automatically that the first presss from both sides the real-time collection and the adjustment of pressure value between line piece 30 and the second presss from both sides line piece 50 according to the cloth thickness of difference and the needle speed of difference, can the required clamp line elasticity of automatic adjustment to in sewing process, can adjust line tension to stable required tension value of sewing in real time and accurately, consequently, replaced the mode of turning the knob through manual and adjusted, thereby satisfied user easy operation's demand.

Further, in an embodiment of the present invention, when the actual pressure value is smaller than the target pressure value, the control unit 200 increases the current flowing through the coil 212 to increase the attraction force between the coil 212 and the electromagnet 221, so that the electromagnet 221 drives the second wire clamping plate 50 to move towards the first wire clamping plate 30 until the actual pressure value is equal to the target pressure value;

when the actual pressure value is greater than the target pressure value, the control unit 200 decreases the current flowing through the coil 212 to decrease the attractive force of the coil 212 and the electromagnet 221, so that the electromagnet 221 drives the second wire clamping sheet 50 to move away from the first wire clamping sheet 30 until the actual pressure value is equal to the target pressure value.

So set up, compare in adopting motor and transmission structure complex structure, including coil 212 and electro-magnet 221 complex structure through actuating mechanism 20 to adjust the pressure value between first clamp 30 and the second clamp 50 through the mode of control current size, can have higher adjustment accuracy.

Further, in an embodiment of the present invention, when the first clip 30 and the second clip 50 are required to clip, the control unit 200 supplies a current having an electromagnetic polarity opposite to that of the electromagnet 221 to the coil 212;

when the first and second grip tabs 30 and 50 are required to be loosened, the control unit 200 supplies a current having the same electromagnetic polarity as that of the electromagnet 221 to the coil 212.

By this arrangement, the object of pinching and loosening can be stably achieved by controlling the current of different electromagnetic polarities to be supplied to the coil 212.

The present invention further proposes a control unit 200, where the control unit 200 adopts the control method of the wire clip 100 as described above, and specific steps of the control method of the wire clip 100 refer to the above embodiments, and since the control unit 200 adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are provided, and will not be described in detail herein.

The invention also provides a sewing electric control device, which comprises a control unit 200 and the thread clamp 100, wherein the specific structure of the thread clamp 100 refers to the embodiment, and the sewing electric control device at least has all the beneficial effects brought by the technical schemes of the embodiment because the sewing electric control device adopts all the technical schemes of the embodiment, and the detailed description is omitted. Wherein, the control unit is electrically connected to the pressure sensor of the wire clamp.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims

1. A wire clamp, comprising:

a housing;

a pressure sensor connected to the wire clamping side;

2. The wire holder of claim 1, wherein the fixing portion includes an iron core and a coil, the iron core being connected to the housing, the coil being wound around the iron core, the first wire clamping piece being connected to the iron core;

3. The wire clamp of claim 2, wherein the first wire clamp, the pressure sensor, and the second wire clamp are all sleeved on the core.

4. The wire clamping device according to claim 2, wherein a limiting block is arranged on one side, away from the second wire clamping piece, of the electromagnet, the limiting block is connected to one end, close to the electromagnet, of the iron core, and an elastic piece is arranged between the limiting block and the electromagnet.

5. The wire clamp of claim 4, wherein the elastic piece is a tower-shaped spring, a tower tip of the tower-shaped spring is abutted with the limiting block, and a tower bottom of the tower-shaped spring is abutted with the electromagnet;

and/or, the outer wall of the iron core, which is close to one end of the electromagnet, is provided with an adjusting thread, and the limiting block is provided with an internal thread which is matched with the adjusting thread so as to adjust the distance between the limiting block and the electromagnet.

6. The wire clip of any one of claims 1 to 5, wherein a mounting cavity is formed in the housing, the housing being provided with a mounting port communicating with the mounting cavity;

7. A method of controlling a wire clamp, the method comprising:

8. The control method of the wire gripper according to claim 7, wherein when the actual pressure value is smaller than the target pressure value, the control unit increases a current flowing through a coil to increase an attractive force of the coil and an electromagnet to cause the electromagnet to drive the second wire gripper to move toward the first wire gripper until the actual pressure value is equal to the target pressure value;

9. The control method of the wire holder according to claim 8, wherein when the first wire holder and the second wire holder are required to clamp the wire, the control unit supplies a current to the coil that can generate an electromagnetic polarity opposite to an electromagnetic polarity of the electromagnet;

10. A control unit, characterized in that the control unit employs the control method of the wire holder according to any one of claims 7 to 9.

11. An electronic control device for sewing, characterized by comprising a control unit and a thread clamp according to any one of claims 1 to 6, wherein the control unit is electrically connected to a pressure sensor of the thread clamp.