CN112899904B - Pattern sewing machine and thread clamping device thereof - Google Patents
Pattern sewing machine and thread clamping device thereof Download PDFInfo
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- CN112899904B CN112899904B CN202110062509.9A CN202110062509A CN112899904B CN 112899904 B CN112899904 B CN 112899904B CN 202110062509 A CN202110062509 A CN 202110062509A CN 112899904 B CN112899904 B CN 112899904B
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- wire clamping
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B47/00—Needle-thread tensioning devices; Applications of tensometers
- D05B47/04—Automatically-controlled tensioning devices
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- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses a pattern machine and a wire clamping device thereof, wherein the wire clamping device comprises a driving motor, a wire clamping and pressing cap, an adjusting screw, a supporting nut and a wire clamping assembly, wherein two ends of the adjusting screw are respectively connected with the driving motor and the wire clamping and pressing cap, the supporting nut is matched with the adjusting screw and fixedly arranged, one end of the wire clamping assembly is fixed, the other end of the wire clamping assembly is elastically propped against the wire clamping and pressing cap, and the wire clamping assembly is sleeved on the adjusting screw. When the driving motor drives the adjusting screw to rotate, the supporting nut is fixedly arranged, the adjusting screw axially slides relative to the supporting nut, the wire clamping pressing cap axially slides synchronously along with the adjusting screw, the wire clamping pressing cap extrudes or releases the wire clamping assembly, the elastic force of the wire clamping assembly changes accordingly, and then the tension of a wire clamped by the wire clamping assembly is accurately adjusted by controlling the rotating angle of the driving motor, so that the sewing quality is improved.
Description
Technical Field
The invention relates to clothing equipment, in particular to a pattern sewing machine and a thread clamping device thereof.
Background
The pattern sewing machine can sew ideal patterns on sewing materials, has the advantages of beautiful stitches, stable operation and the like, and is widely applied to products such as handbags, toys, cases, leather factories and the like. Pattern machines typically utilize a thread clamping device to clamp the suture and maintain the suture at an appropriate tension. In general, the thread clamping device selects an optimum tension according to a sewing template, and the thickness of the sewing material and the sewing conditions of the machine needle also have an influence on the tension of the thread. For example, when the machine needle performs straight sewing, circular sewing, or zigzag sewing, the tension required for the sewing thread is necessarily different. For another example, when a suture encounters a joint in a seam, the thickness of the seam becomes suddenly thicker, and the tension of the suture should be reduced to prevent the suture from breaking. However, the existing thread clamping device can only be adjusted manually, and the tension of the thread is difficult to control accurately, which affects the sewing quality.
Disclosure of Invention
In view of this, the present invention provides a pattern machine and a thread clamping device thereof, in which a driving motor drives an adjusting screw to rotate, and under the support of a supporting nut, the adjusting screw drives a thread clamping and pressing cap to slide synchronously along an axial direction relative to the supporting nut, so that the thread clamping and pressing cap extrudes or releases a thread clamping assembly, and the tension of a parting thread is accurately adjusted by adjusting the elastic force of the thread clamping assembly, thereby facilitating the improvement of sewing quality.
The specific scheme is as follows:
the invention provides a thread clamping device of a pattern sewing machine, which comprises:
a drive motor;
clamping a wire and pressing a cap;
the two ends of the adjusting screw rod are respectively connected with the driving motor and the wire clamping pressing cap;
the supporting nut is matched with the adjusting screw rod and is fixedly arranged;
the wire clamping assembly is fixed at one end, elastically abuts against the wire clamping pressing cap at the other end and is sleeved on the adjusting screw rod; when the driving motor drives the adjusting screw rod to rotate, the adjusting screw rod axially slides relative to the supporting nut to press or release the wire clamping assembly.
Preferably, the method further comprises the following steps:
a controller;
the thickness detection piece is connected with the controller and is used for detecting the thickness of the sewing material; when the thickness detection piece detects that the thickness of the sewing material reaches the preset thickness, the controller controls the driving motor to rotate for a preset angle according to a signal fed back by the thickness detection piece;
a rotation angle detecting member connected to the controller and detecting a rotation angle of the driving motor; when the rotation angle detection piece detects that the driving motor rotates by a preset angle, the controller controls the driving motor to stop rotating according to a signal fed back by the rotation angle detection piece.
Preferably, the output shaft of the driving motor is connected with the adjusting screw rod through a coupling.
Preferably, the method further comprises the following steps:
the motor support is fixedly connected with the driving motor;
the guide support is fixedly connected with the support nut and is fixedly arranged;
at least one group of guide sleeve and guide pin which are mutually matched and used for guiding the driving motor to slide along with the adjusting screw rod in the axial direction are arranged between the motor support and the guide support.
Preferably, the method further comprises the following steps:
the driving gear is fixedly connected with an output shaft of the driving motor;
the driven gear is meshed with the driving gear and is fixedly connected with the adjusting screw rod;
the fixed support is fixedly arranged and fixedly connected with the driving motor, and the fixed support is provided with a guide chute for guiding the driven gear to slide along with the adjusting screw rod in the axial direction.
Preferably, the method further comprises the following steps:
and the dust cover is fixedly arranged on the fixed support and used for covering the driving gear and the driven gear.
Preferably, the wire clamping assembly comprises:
the wire clamping seat is sleeved on the adjusting screw rod and is fixedly arranged;
the spring support sleeve is fixedly arranged in the wire clamping seat;
the take-up spring is sleeved on the spring support sleeve;
the first wire clamping piece and the second wire clamping piece are oppositely arranged;
the wire clamping piece pressing plate is arranged on one side, away from the first wire clamping piece, of the second wire clamping piece;
the wire clamping spring is abutted between the wire clamping sheet pressing plate and the wire clamping pressing cap.
Preferably, the thread releasing assembly is further comprised, and comprises:
the thread releasing push plate is arranged between the first thread clamping piece and the second thread clamping piece;
the wire releasing driving piece is fixedly arranged and fixedly connected with the wire releasing push plate and used for driving the wire releasing push plate to pull the first wire clamping piece and the second wire clamping piece open;
one end is fixedly arranged, and the other end is connected with the thread loosening push plate and used for assisting the reset elastic part of the thread loosening push plate to reset.
Preferably, an adjusting locking piece used for adjusting the axial matching length of the adjusting screw rod and the wire clamping pressing cap is arranged between the adjusting screw rod and the wire clamping pressing cap.
The pattern sewing machine provided by the invention comprises the thread clamping device.
Compared with the background technology, the thread clamping device of the pattern sewing machine comprises a driving motor, a thread clamping pressing cap, an adjusting screw rod, a supporting nut and a thread clamping assembly, wherein two ends of the adjusting screw rod are respectively connected with the driving motor and the thread clamping pressing cap, the supporting nut is matched with the adjusting screw rod, the thread clamping assembly is sleeved on the adjusting screw rod, one end of the thread clamping assembly is fixed, and the other end of the thread clamping assembly is elastically abutted to the thread clamping pressing cap.
When the driving motor drives the adjusting screw to rotate, the supporting nut is fixedly arranged, the adjusting screw axially slides relative to the supporting nut, the wire clamping pressing cap axially slides synchronously along with the adjusting screw, the wire clamping pressing cap is made to extrude or release the wire clamping assembly, the elastic force of the wire clamping assembly changes along with the elastic force, and then the tension of a thread clamped by the wire clamping assembly is accurately adjusted by controlling the rotating angle of the driving motor, so that the sewing quality is improved.
The pattern sewing machine comprising the thread clamping device has the same beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a structural diagram of a thread clamping device of a pattern sewing machine according to a first embodiment of the invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is an installation view of FIG. 1;
FIG. 4 is a structural diagram of a thread clamping device of a pattern sewing machine according to a second embodiment of the present invention;
fig. 5 is an exploded view of fig. 4.
The reference numbers are as follows:
a housing 01;
the device comprises a driving motor 1, a motor support 2, a guide sleeve 3, a coupler 4, a guide pin 5, a guide support 6, a support nut 7, a nut fixing plate 8, an adjusting screw rod 9, a wire clamping assembly 10, a wire clamping pressing cap 11, a wire loosening assembly 12, an adjusting locking member 13 and a corner detecting member 14;
the thread clamping device comprises a thread clamping seat 101, a spring support sleeve 102, a thread take-up spring 103, a first thread clamping sheet 104, a second thread clamping sheet 105, a thread clamping sheet pressing plate 106, a thread clamping spring 107, a thrust bearing 108 and a protective gasket 109;
a loose wire push plate 121, a loose wire driving member 122 and a return elastic member 123;
the support bush 2 ', the fixed support 3', the driving gear 4 'and the driven gear 5';
a guide runner 31 'and a dust cover 32'.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific examples.
Referring to fig. 1 to 3, fig. 1 is a structural diagram of a thread clamping device of a pattern sewing machine according to a first embodiment of the present invention; FIG. 2 is an exploded view of FIG. 1; fig. 3 is an installation view of fig. 1.
The embodiment of the invention discloses a thread clamping device of a pattern sewing machine, which has the key improvement that the elastic force of a thread clamping component 10 is accurately adjusted by a lead screw nut pair, so that the sewing quality is effectively improved.
The thread clamping device of the pattern sewing machine comprises a driving motor 1, a thread clamping and pressing cap 11, an adjusting screw rod 9, a supporting nut 7 and a thread clamping assembly 10, wherein the driving motor 1 is connected with the adjusting screw rod 9, and the driving motor and the adjusting screw rod 9 can be directly connected, and the first specific embodiment is specifically referred. Of course, the drive motor 1 and the adjusting screw 9 may also be indirectly connected, with particular reference to the second embodiment.
The drive motor 1 may be a servomotor in particular, for driving the adjusting screw 9 in rotation. Of course, the drive motor 1 can also be replaced by an electromagnet or another type of drive member.
The wire clamping pressing cap 11 is fixed at one end, far away from the driving motor 1, of the adjusting screw rod 9, a threaded hole is formed in the side face of the wire clamping pressing cap 11, and a fastening screw penetrating through the wire clamping pressing cap 11 in the radial direction abuts against the axial face of the adjusting screw rod 9, so that the wire clamping pressing cap 11 is fixed on the adjusting screw rod 9. Of course, the wire clamping pressing cap 11 and the adjusting screw 9 can be connected by screw threads.
The supporting nut 7 is matched with the adjusting screw rod 9, and the supporting nut 7 is fixed on the machine shell 01, so that the adjusting screw rod 9 can move linearly relative to the supporting nut 7 along the axial direction under the driving of the driving motor 1.
The wire clamping assembly 10 is sleeved on the adjusting screw rod 9, one end of the wire clamping assembly 10 is fixed on the machine shell 01, and the other end of the wire clamping assembly 10 is elastically abutted to the wire clamping pressing cap 11.
When the driving motor 1 drives the adjusting screw rod 9 to rotate anticlockwise, the adjusting screw rod 9 slides forwards relative to the supporting nut 7 along the axial direction, the wire clamping pressing cap 11 slides synchronously and axially along with the adjusting screw rod 9, so that the wire clamping pressing cap 11 extrudes the wire clamping assembly 10, the elastic force of the wire clamping assembly 10 is increased, and the tension of a suture is increased; when the driving motor 1 drives the adjusting screw rod 9 to rotate clockwise, the adjusting screw rod 9 slides reversely relative to the supporting nut 7 along the axial direction, the wire clamping pressing cap 11 slides axially along with the adjusting screw rod 9 synchronously, so that the wire clamping pressing cap 11 releases the wire clamping assembly 10, the elastic force of the wire clamping assembly 10 is reduced, and the tension of a suture is reduced. Therefore, the thread clamping device of the pattern sewing machine can utilize the lead screw nut pair to accurately adjust the elastic force of the thread clamping assembly 10 according to requirements, and further realize accurate adjustment of the tension of the thread clamped by the clamping assembly by controlling the rotation angle of the driving motor 1, so that the tension of the thread is matched with the thickness of a sewing material, and the sewing quality is favorably improved.
The invention also comprises a controller and a thickness detection piece, wherein the controller is electrically connected with the thickness detection piece, the thickness detection piece is used for detecting the thickness of the sewing material, and the thickness detection piece can be specifically a thickness detection sensor. When the thickness that detects the seam material when predetermineeing thickness, thickness detection spare feedback signal to controller, controller control driving motor 1 rotation preset angle makes adjusting screw 9 along the predetermined length of axial displacement, and then adjusts the elastic force of thread clamping component 10, realizes the elastic force of automatic adjustment thread clamping component 10, makes the automatic thickness that matches the seam material of elastic force of thread clamping component 10, and then realizes the tension of accurate adjustment suture, further ensures the sewing quality. The preset thickness refers to the actual current thickness of the sewing material, the preset angle refers to the optimal angle of the driving motor 1 required to rotate when the sewing material reaches the preset thickness, and the one-to-one correspondence relation among the preset thickness, the preset angle and the preset length can be input into the controller in advance, so that the controller can automatically adjust the preset angle and the preset length matched with the preset angle according to the thickness of the sewing material.
Further, the present invention further includes a rotation angle detecting member 14 electrically connected to the controller, the rotation angle detecting member 14 is used for detecting the rotation angle of the driving motor 1, and the rotation angle detecting member 14 may be a rotary encoder, but is not limited thereto. When the rotation angle detection piece 14 detects that the driving motor 1 rotates by a preset angle, the rotation angle detection piece 14 feeds back a signal to the controller, and the controller controls the driving motor 1 to stop rotating, so that the misoperation of the adjusting screw rod 9 is prevented, and the tension of the suture is ensured to be reliable. The rotation angle detecting member 14 may be provided to the drive motor 1.
In the first embodiment, the output shaft of the driving motor 1 and the adjusting screw 9 are directly connected through the coupling 4, and when the driving motor 1 drives the adjusting screw 9 to rotate, the adjusting screw 9 drives the driving motor 1 to move synchronously relative to the supporting nut 7 along the axial direction.
In the first embodiment, the present invention further includes a motor support 2 and a guide support 6, wherein the motor support 2 is fixedly connected to the driving motor 1 for supporting the driving motor 1. The motor support 2 is provided with a avoiding hole for avoiding the output shaft of the driving motor 1, and the avoiding hole and the output shaft are coaxially arranged. When the driving motor 1 moves synchronously and axially along with the adjusting screw 9, the motor support 2 moves synchronously and axially along with the driving motor 1. The motor support 2 is specifically a square block, and the motor support 2 is detachably connected with the shell of the driving motor 1 through a connecting bolt. The guide support 6 is fixedly arranged, the guide support 6 is fixedly connected with the support nut 7, and the guide support 6 is specifically fixed on the machine shell 01.
At least one group of guide sleeves 3 and guide pins 5 which are matched with each other are arranged between the motor support 2 and the guide support 6 and used for guiding the driving motor 1 to axially slide along with the adjusting screw 9. Specifically, the motor support 2 and the guide support 6 are provided with four groups of guide sleeves 3 and guide pins 5, the four groups of guide sleeves 3 and the guide pins 5 are uniformly distributed, the guide sleeves 3 are specifically circular sleeves fixedly arranged on the motor support 2, and the guide pins 5 are specifically cylindrical pins fixedly arranged on the guide support 6. Of course, interchanging the arrangement positions of the guide sleeve 3 and the guide pin 5 does not affect the achievement of the object of the present invention. In addition, the contact surfaces of the guide pin 5 and the guide sleeve 3 can be coated with ink wear-resistant materials, so that the service lives of the guide pin and the guide sleeve can be prolonged.
In addition, the invention also comprises a nut fixing plate 8 for fixing the supporting nut 7, the nut fixing plate 8 is provided with a waist-shaped hole, the outer side surface of the supporting nut 7 is correspondingly waist-shaped, so that the nut fixing plate 8 is in shaft fit with the hole of the supporting nut 7, the supporting nut 7 and the adjusting screw rod 9 are ensured to be coaxial, the coaxiality of the supporting nut and the adjusting screw rod is favorably improved, the risk of radial swinging of the adjusting screw rod 9 is reduced, and the tension of a suture is ensured to be accurate and reliable. And two sides of the nut fixing plate 8 are respectively provided with a connecting lug in an integrated manner, and the connecting lugs are fixed on the shell 01 by fastening screws.
The thread clamping assembly 10 comprises a thread clamping seat 101, a spring support 102, a thread take-up spring 103, a first thread clamping sheet 104, a second thread clamping sheet 105, a thread clamping sheet pressing plate 106 and a thread clamping spring 107. The wire clamping seat 101 is sleeved on the adjusting screw 9, the wire clamping seat 101 is fixed on the machine shell 01, the wire clamping seat 101 is cylindrical, the center of the wire clamping seat is hollow, and an installation space is provided for the wire take-up spring 103. The specific structure of the wire holder 101 can refer to the prior art. The spring support 102 is sleeved on the adjusting screw 9, the spring support 102 is fixed in the wire clamping seat 101, and the take-up spring 103 is supported by the spring support 102. The thread take-up spring 103 is mounted on the spring support 102, a thread take-up arm extending in the radial direction is provided at an end of the thread take-up spring 103, and a main body of the thread take-up spring 103 is cylindrical. The first thread clamping piece 104 and the second thread clamping piece 105 are sleeved on the adjusting screw rod 9, and the convex ends of the first thread clamping piece and the second thread clamping piece are opposite to each other so as to clamp the suture thread by using the convex ends of the first thread clamping piece and the second thread clamping piece. The wire clamping piece pressing disc 106 is sleeved on the adjusting screw rod 9 and located on one side, away from the first wire clamping piece 104, of the second wire clamping piece 105, the wire clamping piece pressing disc 106 applies elastic force applied by the wire clamping spring 107 to the second wire clamping piece 105, and it is guaranteed that the second wire clamping piece 105 presses towards the first wire clamping piece 104. The wire clamping spring 107 is sleeved on the adjusting screw 9, and two ends of the wire clamping spring 107 are respectively abutted against the wire clamping sheet pressing disc 106 and the wire clamping pressing cap 11. The clamp spring 107 is conical in shape. A thrust bearing 108 is further arranged between the wire clamping spring 107 and the wire clamping pressing cap 11, the thrust bearing 108 is sleeved on the adjusting screw rod 9, and the thrust bearing 108 can ensure that the axial force and the radial force transmitted by the wire clamping spring 107 can not generate adverse effects on the wire clamping assembly 10. In order to prevent the wire clamping spring 107 from scratching the thrust bearing 108, a protective gasket 109 is arranged between the wire clamping spring 107 and the thrust bearing 108, and the protective gasket 109 is sleeved on the adjusting screw 9, so that the service life of the thrust bearing 108 is prolonged.
In addition, adjust and be equipped with between lead screw 9 and the clamp wire pressure cap 11 and adjust retaining member 13, adjust retaining member 13 and pass the screw hole that the cap 11 tip was pressed to the clamp wire and establish to link to each other with adjusting lead screw 9 axial, thereby adjust the screw in degree of depth of retaining member 13 through the adjustment, realize adjusting the axial fit length between lead screw 9 and the clamp wire pressure cap 11, and then realize adjusting the elastic force of clamp wire subassembly 10. The adjusting locking 13 is embodied as a fastening screw.
Besides using the driving motor 1 to adjust the elastic force of the wire clamping assembly 10, when the driving motor 1 stops rotating, the wire clamping pressing cap 11 can be directly and manually adjusted, so that the elastic force of the wire clamping assembly 10 can be manually adjusted. Knurling is arranged on the outer side face of the wire clamping pressing cap 11, and the knurling can increase friction force between fingers and the wire clamping pressing cap 11.
The invention further comprises a thread loosening assembly 12, wherein the thread loosening assembly 12 is used for axially shifting the first thread clamping piece 104 and the second thread clamping piece 105 to realize thread loosening. The thread releasing assembly 12 comprises a thread releasing pushing plate 121, a thread releasing driving member 122 and a reset elastic member 123, wherein the thread releasing pushing plate 121 is arranged between the first thread clamping piece 104 and the second thread clamping piece 105 and is used for axially shifting the first thread clamping piece 104 and the second thread clamping piece 105. Specifically, the thread releasing pushing plate 121 is provided with a shifting tooth extending along the axial direction, the first thread clamping piece 104 is provided with a notch, and the notch is arranged to enable the shifting tooth to avoid the first thread clamping piece 104, so that the shifting tooth can only shift the second thread clamping piece 105. Of course, the second clip 105 may be provided with a notch. The wire releasing driving member 122 is fixedly disposed on the housing 01, the wire releasing driving member 122 is fixedly connected to the wire releasing pushing plate 121, and the wire releasing driving member 122 drives the wire releasing pushing plate 121 to move axially to provide power for the wire releasing pushing plate 121 to pull the first wire clamping piece 104 and the second wire clamping piece 105 apart. The loose wire driving member 122 may be a cylinder, and the cylinder extends and retracts in the axial direction to move the loose wire pushing plate 121 in the axial direction. Of course, the type of the loose wire drive 122 is not limited thereto. One end of the elastic resetting member 123 is fixedly arranged, and the other end is connected with the thread releasing push plate 121 and extends and retracts along the radial direction. When the loose wire driving member 122 is extended to push the loose wire pushing plate 121, the restoring elastic member 123 is stretched. When the thread releasing pushing plate 121 is pulled back by the thread releasing driving member 122, the restoring elastic member 123 restores elastic deformation to assist the thread releasing pushing plate 121 to restore rapidly. Specifically, the elastic return element 123 is a common cylindrical spring, one end of which is hooked to a screw provided on the inner wall of the housing 01, and the other end of which is hooked to a screw provided on the side surface of the thread releasing push plate 121. Of course, the fixing manner of the return elastic member 123 is not limited thereto.
Referring to fig. 4 and 5, fig. 4 is a structural diagram of a thread clamping device of a pattern sewing machine according to a second embodiment of the present invention; fig. 5 is an exploded view of fig. 4.
Different from the first embodiment, the second embodiment changes the connection mode of the driving motor 1 and the adjusting screw 9, and the other structures are kept unchanged.
In a second specific embodiment, the invention further comprises a driving gear 4 ', a driven gear 5 ' and a fixed support 3 ', wherein the driving gear 4 ' is fixedly connected with an output shaft of the driving motor 1, the driven gear 5 ' is fixedly connected with the adjusting screw 9, and the driving gear 4 ' is meshed with the driven gear 5 ', so that the driving motor 1 transmits torque to the adjusting screw 9 through gear transmission. The fixed support 3 'is fixed on the casing 01, and the fixed support 3' is connected with the driving motor 1 and is used for supporting the driving motor 1. The fixed support 3 ' is provided with a guide sliding chute 31 ', when the driving motor 1 drives the adjusting screw 9 to rotate, the adjusting screw 9 drives the driven gear 5 ' to synchronously slide along the axial direction, the driven gear 5 ' slides relative to the driving gear 4 ' along the axial direction, and at the moment, the guide sliding chute 31 ' guides the driven gear 5 ' to axially slide along with the adjusting screw 9. The driven gear 5 'is long, so that the driven gear 5' is always meshed with the driving gear 4 'in the sliding process relative to the driving gear 4'. The guide chute 31' is a semi-arc chute. Specifically, fixing support 3 ' is the echelonment, including the vertical section and the horizontal segment that the integration links to each other perpendicularly, and vertical section is equipped with the fixed orifices, and the fixed orifices is equipped with support bush 2 ', and support bush 2 ' closely cooperates with driving motor 1's output shaft, guarantees that fixing support 3 ' and driving motor 1 reliably link to each other. The guide runner 31 'is provided on the horizontal section, the guide runner 31' extending in the axial direction.
In order to ensure the reliable operation of the driving gear 4 'and the driven gear 5', the dust cover assembly further comprises a dust cover 32 ', the dust cover 32' is fixed on the fixed support 3 'through a fixing screw, the dust cover 32' covers the driving gear 4 'and the driven gear 5', the driving gear 4 'and the driven gear 5' are prevented from being clamped due to external foreign matters, and the dust cover assembly is reliable in operation.
The pattern sewing machine provided by the invention comprises the thread clamping device and has the same beneficial effects.
The pattern sewing machine and the thread clamping device thereof provided by the invention are described in detail, a specific example is applied in the description to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (7)
1. A thread clamping device of a pattern sewing machine is characterized by comprising:
a drive motor (1);
a wire clamping and pressing cap (11);
the two ends of the adjusting screw rod (9) are respectively connected with the driving motor (1) and the wire clamping pressing cap (11);
the supporting nut (7) is matched with the adjusting screw rod (9) and is fixedly arranged;
the wire clamping assembly (10) is fixed at one end, elastically props against the wire clamping pressing cap (11) at the other end and is sleeved on the adjusting screw rod (9); when the driving motor (1) drives the adjusting screw rod (9) to rotate, the adjusting screw rod (9) axially slides relative to the supporting nut (7) to press or release the wire clamping assembly (10);
further comprising:
the output shaft of the driving motor (1) is connected with the adjusting screw rod (9) through a coupler (4);
the motor support (2) is fixedly connected with the driving motor (1);
the guide support (6) is fixedly connected with the support nut (7) and is fixedly arranged;
at least one group of guide sleeve (3) and guide pin (5) which are mutually matched and used for guiding the driving motor (1) to axially slide along with the adjusting screw rod (9) are arranged between the motor support (2) and the guide support (6);
or further comprising:
a driving gear (4') fixedly connected with an output shaft of the driving motor (1);
a driven gear (5 ') which is meshed with the driving gear (4') and is fixedly connected with the adjusting screw rod (9);
and the fixed support (3 ') is fixedly arranged and is fixedly connected with the driving motor (1), and the fixed support (3') is provided with a guide chute (31 ') used for guiding the driven gear (5') to axially slide along with the adjusting screw rod (9).
2. The thread clamping device of a pattern sewing machine according to claim 1, characterized by further comprising:
a controller;
the thickness detection piece is connected with the controller and is used for detecting the thickness of the sewing material; when the thickness detection piece detects that the thickness of the sewing material reaches a preset thickness, the controller controls the driving motor (1) to rotate by a preset angle according to a signal fed back by the thickness detection piece;
a rotation angle detecting member (14) connected to the controller for detecting a rotation angle of the drive motor (1); when the rotation angle detection piece (14) detects that the driving motor (1) rotates by the preset angle, the controller controls the driving motor (1) to stop rotating according to a signal fed back by the rotation angle detection piece (14).
3. The thread clamping device of a pattern sewing machine according to claim 1, characterized by further comprising:
and a dust cover (32 ') fixedly arranged on the fixed support (3') and used for covering the driving gear (4 ') and the driven gear (5').
4. Thread gripping device of a pattern sewing machine according to any of claims 1 to 3, characterized in that the thread gripping assembly (10) comprises:
the wire clamping seat (101) is sleeved on the adjusting screw rod (9) and is fixedly arranged;
a spring support sleeve (102) fixedly arranged in the wire clamping seat (101);
a thread take-up spring (103) sleeved on the spring support sleeve (102);
the first wire clamping piece (104) and the second wire clamping piece (105) are oppositely arranged;
the wire clamping piece pressing plate (106) is arranged on one side, away from the first wire clamping piece (104), of the second wire clamping piece (105);
and the wire clamping spring (107) is abutted between the wire clamping sheet pressing plate (106) and the wire clamping pressing cap (11).
5. Thread gripping device of a pattern sewing machine according to claim 4, characterized in that it further comprises a thread release assembly (12), the thread release assembly (12) comprising:
the thread loosening push plate (121) is arranged between the first thread clamping piece (104) and the second thread clamping piece (105);
the wire releasing driving piece (122) is fixedly arranged, fixedly connected with the wire releasing push plate (121) and used for driving the wire releasing push plate (121) to pull the first wire clamping piece (104) and the second wire clamping piece (105) apart;
one end of the elastic resetting piece (123) is fixedly arranged, the other end of the elastic resetting piece is connected with the thread releasing push plate (121) and is used for assisting the thread releasing push plate (121) to reset.
6. The thread clamping device of the pattern sewing machine according to any one of claims 1 to 3, characterized in that an adjusting locking piece (13) for adjusting the axial matching length of the adjusting screw rod (9) and the thread clamping pressing cap (11) is arranged between the adjusting screw rod and the thread clamping pressing cap.
7. A pattern machine, characterized by comprising the thread gripping means of the pattern machine of any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110062509.9A CN112899904B (en) | 2021-01-18 | 2021-01-18 | Pattern sewing machine and thread clamping device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110062509.9A CN112899904B (en) | 2021-01-18 | 2021-01-18 | Pattern sewing machine and thread clamping device thereof |
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| CN112899904A CN112899904A (en) | 2021-06-04 |
| CN112899904B true CN112899904B (en) | 2022-07-12 |
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