CN110983639A - Cloth feeding device, cloth feeding device control method and wrist bending machine - Google Patents
Cloth feeding device, cloth feeding device control method and wrist bending machine Download PDFInfo
- Publication number
- CN110983639A CN110983639A CN201911402986.4A CN201911402986A CN110983639A CN 110983639 A CN110983639 A CN 110983639A CN 201911402986 A CN201911402986 A CN 201911402986A CN 110983639 A CN110983639 A CN 110983639A
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- China
- Prior art keywords
- feeding
- cloth feeding
- feeding device
- cloth
- connecting rod
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/22—Work-feeding means with means for setting length of stitch
Abstract
The invention discloses a cloth feeding device, which comprises a feeding tooth, a feeding tooth rack fixedly connected with the feeding tooth, and a lower shaft in transmission connection with a main shaft motor for driving a needle rod to move, wherein the lower shaft is connected with the feeding tooth rack through a feeding cam component so as to drive the feeding tooth rack to move up and down through the lower shaft, and the cloth feeding device also comprises: the front and back driving mechanism is connected with the feeding tooth rack and is used for driving the feeding tooth rack to move back and forth; and the controller is used for controlling the motion trail output by the front and rear driving mechanisms according to the required needle pitch and the rotating speed of the spindle motor so that the front and rear motion of the feeding tooth rack is matched with the up and down motion of the feeding tooth rack to form the cloth feeding action of the feeding tooth. The cloth feeding device can realize automatic quantitative adjustment of the needle pitch, so that the needle pitch is convenient and accurate to adjust. The invention also discloses a cloth feeding device control method of the cloth feeding device and a wrist bending machine comprising the cloth feeding device.
Description
Technical Field
The invention relates to the technical field of sewing equipment, in particular to a cloth feeding device. In addition, the invention also relates to a control method of the cloth feeding device and a wrist bending machine comprising the cloth feeding device.
Background
It is known that, when sewing, the feed dog frame moves up and down and moves back and forth to cooperate with each other to form the feed motion of the feed dog, and then cooperates with the up and down movement of the needle bar to realize the sewing operation with the preset needle pitch.
In the prior art, power input of up-and-down motion and back-and-forth motion of a feeding tooth rack and up-and-down motion of a needle rod of a wrist bending machine is from a spindle motor, and specifically, when the spindle motor rotates, a crank connecting rod mechanism connected with a spindle is driven to act so as to realize up-and-down motion of the needle rod. Meanwhile, the lower shaft is in transmission connection with the output end of the spindle motor, two feeding cam assemblies with inconsistent eccentric directions are arranged on the lower shaft, and for convenience of description, the two feeding cam assemblies are respectively called as a first feeding cam assembly and a second feeding cam assembly. When the lower shaft rotates under the transmission of the spindle motor, the two feeding cam assemblies are driven to act, the first feeding cam assembly drives the feeding tooth rack to move up and down, and the second feeding cam assembly drives the feeding tooth rack to move back and forth, so that the cloth feeding action of the feeding teeth is realized.
However, when the feeding is performed in this way, the needle pitch needs to be manually adjusted, that is, when the required needle pitch is different, the needle pitch adjusting pin needs to be manually operated to change the eccentricity of the second feeding cam assembly, so that the first feeding cam assembly and the second feeding cam assembly are matched to make the feeding track of the feeding teeth meet the requirement of the needle pitch.
On one hand, manual adjustment of the needle pitch is inconvenient and time-consuming; on the other hand, the stitch length can not be accurately and quantitatively controlled by manually adjusting the stitch length, and the error of the stitch length is large.
In summary, a problem to be solved by those skilled in the art is how to provide a cloth feeding device that is convenient to adjust and can quantitatively adjust the needle pitch.
Disclosure of Invention
In view of the above, the present invention is directed to a cloth feeding apparatus and a control method thereof, which can realize automatic and quantitative adjustment of a needle pitch, and make the adjustment of the needle pitch convenient and accurate.
Another object of the present invention is to provide a curved wrist machine including the above cloth feeding device, which is convenient and reliable in needle pitch adjustment.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides a cloth feeding device, including the pay-off tooth, with pay-off tooth frame of pay-off tooth fixed connection and the lower axle that is used for being connected with the main shaft motor transmission that drives the needle bar motion, the lower axle pass through pay-off cam subassembly with the pay-off tooth frame links to each other, in order to pass through the lower axle drive pay-off tooth frame up-and-down motion still includes:
the front and back driving mechanism is connected with the feeding tooth rack and is used for driving the feeding tooth rack to move back and forth;
and the controller is used for controlling the motion trail output by the front and rear driving mechanisms according to the required needle pitch and the rotating speed of the spindle motor, so that the front and rear motion of the feeding tooth rack is matched with the up and down motion of the feeding tooth rack to form the cloth feeding action of the feeding tooth.
Preferably, the front and rear driving mechanism comprises a voice coil motor for providing a power source for the front and rear movement of the feed dog.
Preferably, the front and rear driving mechanism further comprises a transmission assembly for connecting the output end of the voice coil motor and the feed dog.
Preferably, the moving direction of the output end of the voice coil motor is the same as the moving direction of the forward and backward movement of the feed dog.
Preferably, the transmission assembly comprises:
the first end of the first connecting rod is hinged with the output end of the voice coil motor;
the first end of the second connecting rod is hinged with the second end of the first connecting rod, and the middle part of the second connecting rod is hinged with the lower section of the shell;
and the feeding sliding block is connected with the feeding tooth rack in a sliding manner along the vertical direction and is hinged with the second end of the second connecting rod.
Preferably, the first connecting rod and the output end of the voice coil motor, the second connecting rod and the first connecting rod, and the second connecting rod and the feeding sliding block are hinged through the cooperation of connecting pins and connecting pin screws, or hinged through shaft position screws.
Preferably, the transmission assembly comprises:
the support is connected with the output end of the voice coil motor;
and the connecting shaft is arranged on the support and is clamped with the feeding tooth rack.
Preferably, the connecting shaft is sleeved with a bearing, and an outer ring of the bearing is clamped with the feeding tooth rack.
A cloth feeding device control method is applied to any one cloth feeding device, and comprises the following steps:
calculating to obtain a theoretical motion track of a feeding tooth rack of the cloth feeding device according to the needle pitch and the rotating speed of a spindle motor for driving a needle rod to move;
and controlling the motion trail output by a front and back driving mechanism of the cloth feeding device so as to enable the feeding tooth rack to move front and back according to the theoretical motion trail.
The utility model provides a bent wrist machine, is including being used for driving the main shaft motor and the work feed device of needle bar motion, the work feed device is above-mentioned any one work feed device, the lower shaft of work feed device with the main shaft motor transmission is connected.
According to the cloth feeding device provided by the invention, the front and back movement tracks of the feeding tooth rack are automatically adjusted through the front and back driving mechanisms, so that the automatic adjustment of the needle pitch of the curved wrist machine applying the cloth feeding device is realized, the adjustment of the needle pitch is more convenient, and the time and the labor are saved. And the controller can adjust the motion trail output by the front and rear driving mechanisms in real time according to the required needle pitch and the rotating speed of the spindle motor, so that the front and rear motion of the feeding tooth frame is matched with the up and down motion of the feeding tooth frame to meet the requirement of the required needle pitch, therefore, the cloth feeding device can realize the quantitative adjustment of the needle pitch of the wrist bending machine applying the cloth feeding device, and the adjustment of the needle pitch is more accurate and reliable.
The control method of the cloth feeding device provided by the invention can automatically and quantitatively adjust the output of the front and back driving mechanism of the cloth feeding device, so that the front and back movement of the feeding tooth frame is matched with the up and down movement of the feeding tooth frame to form the cloth feeding action required by the feeding tooth.
The wrist bending machine provided by the invention comprises the cloth feeding device, and the needle pitch of the cloth feeding device is convenient and reliable to adjust.
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 schematic diagram of a control of a cloth feeding apparatus according to an embodiment of the present invention;
FIG. 2 is an exploded view of a cloth feeding apparatus according to an embodiment of the present invention;
FIG. 3 is an assembled view of the cloth feeding apparatus shown in FIG. 2;
fig. 4 is a schematic structural view of a cloth feeding apparatus according to a second embodiment of the present invention;
fig. 5 is a schematic structural view of a cloth feeding apparatus according to a third embodiment of the present invention;
fig. 6 is a flowchart of a cloth feeding apparatus control method according to an embodiment of the present invention.
The reference numerals in fig. 1 to 5 are as follows:
the device comprises a feeding tooth 1, a first screw 11, a feeding tooth rack 2, a tooth rack slide block 21, a feeding eccentric pin 22, a feeding eccentric wheel 23, a feeding crank 24, a crank pin 25, a crank pin screw 26, a lower shaft 3, a front and rear driving mechanism 4, a voice coil motor 41, a second screw 411, a first connecting rod 42, a second hinged seat 421, a fourth screw 422, a second connecting rod 43, a first hinged seat 431, a third screw 432, a feeding slide block 44, a slide block pin 441, a connecting rod pin 451, a connecting pin 452, a connecting pin screw 46, a support seat 47, a connecting shaft 48, a bearing 49, a front and rear driving mechanism driver 49, a main shaft motor 5, a main shaft motor driver 51, a machine shell lower section 6, a main control system 7 and a control panel 8.
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.
The core of the invention is to provide a cloth feeding device and a control method thereof, which can realize automatic quantitative adjustment of the needle pitch and ensure that the needle pitch is convenient and accurate to adjust. The other core of the invention is to provide the curved wrist machine comprising the cloth feeding device, and the needle pitch of the curved wrist machine is convenient and reliable to adjust.
Referring to fig. 1-5, fig. 1 is a schematic control diagram of a cloth feeding device according to an embodiment of the present invention; FIG. 2 is an exploded view of a cloth feeding apparatus according to an embodiment of the present invention; FIG. 3 is an assembled view of the cloth feeding apparatus shown in FIG. 2; fig. 4 is a schematic structural view of a cloth feeding apparatus according to a second embodiment of the present invention; fig. 5 is a schematic structural diagram of a cloth feeding apparatus according to a third embodiment of the present invention.
Wherein, the directions indicated by the arrows in fig. 1 are the motion directions output by the spindle motor 5 and the front-back driving mechanism 4, respectively.
The invention provides a cloth feeding device, which is mainly used for a wrist bending machine and mainly comprises a feeding tooth 1, a feeding tooth rack 2, a feeding cam component, a lower shaft 3, a front and rear driving mechanism 4, a controller and the like.
Specifically, the feeding tooth 1 is fixedly connected with the feeding tooth rack 2, and preferably, the feeding tooth 1 is connected with the feeding tooth rack 2 through a first screw 11, so that the feeding tooth rack 2 drives the feeding tooth 1 to move when the feeding tooth rack 2 moves.
The feeding tooth rack 2 is connected with a lower shaft 3 through a feeding cam component, the lower shaft 3 is in transmission connection with a main shaft motor 5 which drives a needle rod to move, so that when the main shaft motor 5 rotates, the lower shaft 3 is driven to rotate synchronously, the lower shaft 3 drives the feeding cam component to act, and finally the feeding cam component drives the feeding tooth rack 2 to move up and down.
Preferably, the feeding cam assembly comprises a feeding eccentric wheel 23 and a feeding crank 24, the feeding eccentric wheel 23 is fixedly arranged on the lower shaft 3, an eccentric part of the feeding eccentric wheel 23 is rotatably sleeved with the feeding crank 24, and the feeding crank 24 is hinged and fixed with the feeding tooth rack 2 through a combination of a crank pin 25 and a crank pin screw 26.
It can be understood that when the lower shaft 3 rotates under the driving of the spindle motor 5, the lower shaft 3 drives the feeding eccentric wheel 23 fixed thereon to rotate, so that the feeding eccentric wheel 23 drives the feeding crank 24 to move up and down, and since the feeding crank 24 and the feeding tooth rack 2 are hinged and fixed together by the crank pin 25 and the crank pin screw 26, the up and down movement of the feeding crank 24 drives the feeding tooth rack 2 to move up and down.
Further, the feeding tooth rack 2 is connected with a front and back driving mechanism 4, and the front and back driving mechanism 4 is used for driving the feeding tooth rack 2 to move back and forth.
The specific structure of the front-back driving mechanism 4 and the driving principle thereof are not limited in this embodiment, as long as the front-back driving mechanism can drive the feed dog frame 2 to move forward and backward, and those skilled in the art can refer to the conventional driving device in the prior art.
The front and rear driving mechanism 4 is connected to a controller, and the controller is configured to control a motion trajectory output by the front and rear driving mechanism 4 according to a required needle pitch and a rotation speed of the spindle motor 5, so that the front and rear motion of the feed dog frame 2 is matched with the up and down motion of the feed dog frame to form a cloth feeding motion of the feed dog 1.
That is, the invention automatically adjusts the back-and-forth movement track of the feeding tooth rack 2 through the back-and-forth driving mechanism 4, thereby realizing the automatic adjustment of the needle pitch of the curved wrist machine applying the cloth feeding device, leading the adjustment of the needle pitch to be more convenient, time-saving and labor-saving. And because the controller can adjust the motion trail output by the front and rear driving mechanism 4 in real time according to the required needle pitch and the rotating speed of the spindle motor 5, the front and rear motion of the feeding tooth rack 2 is matched with the up and down motion of the feeding tooth rack to meet the requirement of the required needle pitch, the cloth feeding device can realize the quantitative adjustment of the needle pitch of the wrist bending machine using the cloth feeding device, and the adjustment of the needle pitch is more accurate and reliable.
It can be understood that, when being installed, the cloth feeding device is installed on the lower section 6 of the shell of the wrist bending machine, and the lower section 6 of the shell plays a role in fixing and supporting the cloth feeding device.
Preferably, the feeding tooth rack 2 is connected with the lower section 6 of the machine shell through a tooth rack slide block 21 and a feeding eccentric pin 22. The feeding tooth rack 2 is provided with a waist-shaped hole which is used for being in sliding connection with the tooth rack sliding block 21, the eccentric part of the feeding eccentric pin 22 penetrates through the mounting hole of the tooth rack sliding block 21, and the feeding eccentric pin 22 is fixedly connected with the lower section 6 of the machine shell in a rotatable mode so as to adjust the upper position and the lower position of the feeding tooth rack 2 during mounting.
Further, the lower shaft 3 is rotatably mounted to the housing lower section 6.
The front and rear driving mechanism 4 is fixedly arranged on the lower section 6 of the machine shell, and the specific fixing position of the front and rear driving mechanism 4 is not limited by the invention.
In addition, the specific manner of acquiring the required needle pitch and the rotation speed of the spindle motor 5 by the controller is not limited in the present invention, for example, the required needle pitch may be stored in the controller in advance, or the controller may acquire the input required needle pitch from the control panel 8 connected thereto.
The rotating speed of the spindle motor 5 can be transmitted to the controller through the communication module by the main control system 7 of the wrist bending machine, or the encoder pulse signal of the spindle motor 5 can be directly transmitted to the controller, so that the controller calculates the actual rotating speed of the spindle motor 5 according to the rotating angle corresponding to the single pulse signal.
When the cloth feeding device is applied to the curved wrist machine, the controller of the cloth feeding device and the main control system 7 of the curved wrist machine may be independent control modules.
Of course, in view of the simplicity of the structure, it is preferable that the function of the controller of the cloth feeding device is integrated in the main control system 7, that is, the controller of the cloth feeding device is embodied as the main control system 7 of the wrist bending machine, the front and rear driving mechanisms 4 are connected to the main control system 7, and at this time, the main control system 7 calculates the theoretical movement track of the front and rear driving mechanisms 4 according to the required needle pitch and the rotation speed of the spindle motor 5, and controls the front and rear driving mechanisms 4 to output the corresponding movement tracks. That is, the active system controls the movement trajectories of the spindle motor 5 and the front-rear driving mechanism 4 by inputting pulse control signals to the spindle motor driver 51 and the drivers of the front-rear driving mechanism 4, respectively.
In view of the realization of the specific structure of the front-rear driving mechanism 4, on the basis of the above-described embodiment, the front-rear driving mechanism 4 includes the voice coil motor 41 for providing a power source for the front-rear movement of the feed dog 2.
That is to say, in the embodiment, the voice coil motor 41 is used as the power input of the feeding rack 2, since the voice coil motor 41 can directly output the linear motion after being electrified, the direction of the output motion of the voice coil motor 41 can be changed by changing the direction of the current applied to the voice coil motor 41, so that the voice coil motor 41 can output the linear reciprocating motion, and the feeding rack has the advantages of simple structure, small volume, high response speed and many advantages.
It should be noted that the output end of the voice coil motor 41 may be directly connected to the feeding rack 2, or may be indirectly connected to the feeding rack 2 through a transmission assembly.
In consideration of the convenience of the conversion or connection of the movement ratio, as a preferable solution, on the basis of the above embodiment, the front and rear driving mechanism 4 further includes a transmission assembly for connecting the output end of the voice coil motor 41 and the feed dog 2.
That is, the voice coil motor 41 in this embodiment is indirectly connected to the feed dog 2 through the transmission assembly.
The present embodiment does not limit the specific structure of the transmission assembly, as long as the output motion of the voice coil motor 41 can be transmitted to the feed dog 2.
In order to avoid the reversal of the transmission assembly during the transmission of motion, etc., on the basis of the above-described embodiment, the direction of motion of the output end of the voice coil motor 41 is the same as the direction of motion of the forward and backward motion of the feed dog 2.
That is, the present embodiment defines the fixing direction of the voice coil motor 41, that is, when the voice coil motor 41 is installed, it is required to ensure that the moving direction of the output end of the voice coil motor 41 is consistent with the moving direction of the forward and backward movement of the feed dog 2.
The specific fixing position of the voice coil motor 41 is not limited in this embodiment, for example, when the voice coil motor 41 is fixed on the lower section 6 of the chassis, the voice coil motor 41 may be fixed at the bottom of the lower section 6 of the chassis, or may be fixed at the side of the lower section 6 of the chassis, and the mounting position of the voice coil motor 41 may be specifically set according to the actual mounting requirement, regardless of the mounting position of the voice coil motor 41, as long as the moving direction of the output end of the voice coil motor 41 is ensured to be the same as the moving direction of the forward and backward movement of the feed dog frame 2.
As shown in fig. 3, the voice coil motor 41 is fixed at the bottom of the lower section 6 of the housing; as shown in fig. 4 and 5, the voice coil motor 41 is fixed to the side of the lower section 6 of the housing.
Preferably, the fixing portion of the voice coil motor 41 is fixedly connected to the lower section 6 of the casing by a second screw 411.
In view of the realization of the specific structure of the transmission assembly, on the basis of the above embodiment, the transmission assembly includes a first connecting rod 42, a second connecting rod 43 and a feeding slide block 44, a first end of the first connecting rod 42 is hinged to the output end of the voice coil motor 41, a second end of the first connecting rod 42 is hinged to a first end of the second connecting rod 43, a second end of the second connecting rod 43 is hinged to the feeding slide block 44, a middle portion of the second connecting rod 43 is used for being hinged to the lower section 6 of the housing, and the feeding slide block 44 is connected to the feeding dental frame 2 in a sliding manner in the up-down direction.
During operation, the front-back linear motion of the voice coil motor 41 is transmitted to the second connecting rod 43 through the first connecting rod 42, and since the middle part of the second connecting rod 43 is hinged and fixed with the lower section 6 of the housing, the front-back linear motion of the voice coil motor 41 is converted into the reciprocating swing of the second connecting rod 43 around the hinged part of the middle part, so that the second end of the second connecting rod 43 drives the feeding slide block 44 to move up and down and back and forth, and the feeding slide block 44 drives the feeding tooth frame 2 to move back and forth.
It can be understood that, since the feeding slide block 44 is slidably connected to the feeding rack 2 in the up-down direction, the feeding rack 2 can give way to the up-down movement of the feeding slide block 44.
Further, as can be seen from fig. 2, the length of the first link 42 is smaller than that of the second link 43, and the first link 42 is used for compensating the up-and-down movement of the second link 43 during the back-and-forth swing.
Considering the specific structure of the feeding slide block 44 and the feeding tooth rack 2 in the up-down direction, as a preferred scheme, the feeding tooth rack 2 is provided with a U-shaped groove, and the feeding slide block 44 is in sliding fit with the U-shaped groove. At this time, the feeding slider 44 is supported in the U-shaped groove by the second link 43.
In consideration of the implementation of the specific hinge structures between the first link 42 and the output end of the voice coil motor 41, between the second link 43 and the first link 42, and between the second link 43 and the feeding slider 44, on the basis of the above embodiments, the hinges between the first link 42 and the output end of the voice coil motor 41, between the second link 43 and the first link 42, and between the second link 43 and the feeding slider 44 are implemented by the connection pins and the connection pin screws 452, or by the shaft position screws.
As shown in fig. 2 and 3, the feeding slider 44 is provided with a pin hole, the second end of the second connecting rod 43 is provided with a top hole, the slider pin 441 is rotatably inserted into the pin hole of the feeding slider 44 and the top hole of the second connecting rod 43 in sequence, and the slider pin 441 is fixedly connected with the connecting pin screw 452, so as to realize the hinge joint of the feeding slider 44 and the second connecting rod 43 and prevent the feeding slider 44 and the second connecting rod 43 from being separated.
The middle portion of the second connecting rod 43 is provided with a middle hole, the lower casing section 6 is fixedly provided with a first hinge base 431, preferably, the first hinge base 431 is fixedly connected with the lower casing section 6 through a third screw 432, the first hinge base 431 is provided with a first connecting hole, and a connecting pin is sequentially arranged through the middle hole of the second connecting rod 43 and the first connecting hole of the first hinge base 431 and then is matched and connected with a connecting pin screw 452, so that the second connecting rod 43 is hinged with the lower casing section 6.
The first end of second connecting rod 43 is equipped with the bottom hole, and the second end of first connecting rod 42 is equipped with the second connecting hole, and another connecting pin wears to locate the bottom hole of second connecting rod 43 and the second connecting hole of first connecting rod 42 in proper order after, is connected with connecting pin screw 452 cooperation, realizes the articulated of second connecting rod 43 and first connecting rod 42.
The first end of first connecting rod 42 is equipped with the third connecting hole, the output of voice coil motor 41 is equipped with the articulated seat 421 of second, preferably, the articulated seat 421 of second passes through fourth screw 422 and the output fixed connection of voice coil motor 41, the articulated seat 421 of second is equipped with the fourth connecting hole, another connecting pin wears to locate behind the third connecting hole of first connecting rod 42 and the fourth connecting hole of the articulated seat 421 of second in proper order, with connecting pin screw 452 cooperation connection, realize the articulated of first connecting rod 42 and the output of voice coil motor 41.
In view of another implementation structure of the driving assembly, on the basis of the above embodiment, the driving assembly includes a support 46 connected to the output end of the voice coil motor 41 and a connecting shaft 47 disposed on the support 46, and the connecting shaft 47 is clamped with the feed dog 2.
In view of the convenience of installation, on the basis of the above embodiment, the bearing 48 is sleeved on the connecting shaft 47, and the outer ring of the bearing 48 is clamped with the feed dog 2.
As shown in fig. 4 and 5, the output end of the voice coil motor 41 is provided with two supports 46, a connecting shaft 47 is arranged between the two supports 46, a bearing 48 is arranged on the connecting shaft 47, and the feeding rack 2 is provided with a clamping groove which is in contact clamping connection with the outer side of the outer ring of the bearing 48.
As shown in fig. 4, the voice coil motor 41 and the support 46 are located on the same side of the output end; as shown in fig. 5, the voice coil motor 41 and the support 46 are located on different sides of the output terminal.
Fig. 6 is a flowchart illustrating a control method of a cloth feeding apparatus according to an embodiment of the present invention.
In addition to the above-described cloth feeding apparatus, the present invention also provides a cloth feeding apparatus control method for realizing the cloth feeding apparatus disclosed in the above-described embodiment, which is applied to a controller of the cloth feeding apparatus, the cloth feeding apparatus control method including steps S1 and S2.
S1: and calculating to obtain the theoretical motion trail of the feed dental articulator 2 of the cloth feeding device according to the needle pitch and the rotating speed of the spindle motor 5 for driving the needle rod to move.
S2: the motion trail output by the front and back driving mechanism 4 of the cloth feeding device is controlled, so that the feeding tooth rack 2 moves back and forth according to the theoretical motion trail.
It can be understood that the theoretical movement track of the feeding tooth rack 2 mainly refers to the forward and backward movement track required by the feeding tooth rack 2, and the forward and backward movement of the feeding tooth rack 2 can be matched with the up and down movement of the feeding tooth rack according to the theoretical movement track of the feeding tooth rack 2 calculated by the needle pitch and the rotating speed of the spindle motor 5, so that the cloth feeding action of the feeding tooth 1 is matched with the up and down movement of the needle rod.
That is, the control method of the cloth feeding device can automatically and quantitatively adjust the output of the front and back driving mechanism 4 of the cloth feeding device, so that the front and back movement of the feeding tooth frame 2 is matched with the up and down movement of the feeding tooth frame to form the cloth feeding action required by the feeding tooth 1.
On the basis of the above embodiment, before calculating the theoretical movement track of the feed dog 2 of the cloth feeding device according to the needle pitch and the rotation speed of the spindle motor 5, the method further includes:
s3: and acquiring the required needle pitch size.
S4: the rotation speed of the spindle motor 5 is acquired.
It should be noted that the embodiment is not particularly limited to a specific manner of obtaining the required needle pitch and a specific manner of obtaining the rotation speed of the spindle motor 5.
For example, the required needle pitch can be input through the control panel 8 of the wrist bending machine, and the rotating speed of the spindle motor 5 can be obtained through a pulse signal sent to the spindle motor driver 51 by the main control system 7 of the wrist bending machine.
Besides the cloth feeding device, the invention also provides a curved wrist machine comprising the cloth feeding device disclosed in the embodiment, the curved wrist machine further comprises a spindle motor 5 for driving the needle bar to move, and the lower shaft 3 of the cloth feeding device is in transmission connection with the spindle motor 5.
It should be noted that, please refer to the prior art for the transmission connection between the lower shaft 3 and the spindle motor 5 and the structure of other parts of the wrist bending machine, which are not described herein again.
The main improvement of the embodiment is that the conventional cloth feeding mechanism in the prior art is changed into the cloth feeding device disclosed by any one of the embodiments, so that the beneficial effects are achieved, and the needle pitch is convenient and reliable to adjust.
As a preferred scheme, the implementation function of the controller of the cloth feeding device is integrated in the main control system 7 of the wrist bending machine, and the active system respectively implements the motion trajectory control of the spindle motor 5 and the front and rear driving mechanisms 4 (e.g., the voice coil motor 41) by inputting pulse control signals to the spindle motor driver 51 and the drivers of the front and rear driving mechanisms 4 (e.g., the voice coil motor 41).
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The cloth feeding device, the cloth feeding device control method, and the wrist bending machine according to the present invention have been described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a cloth feeding device, including pay-off tooth (1), with pay-off tooth frame (2) of pay-off tooth (1) fixed connection and be used for lower axle (3) of being connected with the main shaft motor (5) transmission of drive needle bar motion, lower axle (3) through pay-off cam subassembly with pay-off tooth frame (2) link to each other, in order to pass through lower axle (3) drive pay-off tooth frame (2) up-and-down motion, its characterized in that still includes:
the front and back driving mechanism (4) is connected with the feeding tooth rack (2) and is used for driving the feeding tooth rack (2) to move back and forth;
and the controller is connected with the front and rear driving mechanisms (4) and is used for controlling the motion trail output by the front and rear driving mechanisms (4) according to the required needle pitch and the rotating speed of the spindle motor (5) so as to enable the front and rear motion of the feeding tooth rack (2) to be matched with the up and down motion of the feeding tooth rack to form the cloth feeding action of the feeding tooth (1).
2. The cloth feeding device according to claim 1, wherein the forward and backward driving mechanism (4) comprises a voice coil motor (41) for providing a power source for the forward and backward movement of the feed dog (2).
3. The cloth feeding device according to claim 2, characterized in that the front and rear driving mechanism (4) further comprises a transmission assembly for connecting the output end of the voice coil motor (41) and the feed dog (2).
4. The cloth feeding device according to claim 3, characterized in that the output end of the voice coil motor (41) moves in the same direction as the forward and backward movement of the feed dog (2).
5. The cloth feed apparatus of claim 4, wherein the drive assembly comprises:
a first connecting rod (42), wherein a first end of the first connecting rod (42) is hinged with an output end of the voice coil motor (41);
a second connecting rod (43), wherein a first end of the second connecting rod (43) is hinged with a second end of the first connecting rod (42), and a middle part of the second connecting rod (43) is used for being hinged with a lower section (6) of the machine shell;
and the feeding sliding block (44) is connected with the feeding tooth rack (2) in a sliding manner along the up-down direction, and the feeding sliding block (44) is hinged with the second end of the second connecting rod (43).
6. The cloth feeding device according to claim 5, wherein the first connecting rod (42) and the output end of the voice coil motor (41), the second connecting rod (43) and the first connecting rod (42), and the second connecting rod (43) and the feeding sliding block (44) are hinged through connecting pins and connecting pin screws (452) in a matched mode, or hinged through shaft position screws.
7. The cloth feed apparatus of claim 4, wherein the drive assembly comprises:
a support (46) connected with the output end of the voice coil motor (41);
locate connecting axle (47) of support (46), connecting axle (47) with pay-off dental articulator (2) joint.
8. The cloth feeding device according to claim 7, characterized in that a bearing (48) is sleeved on the connecting shaft (47), and the outer ring of the bearing (48) is clamped with the feed dog frame (2).
9. A cloth feeding apparatus control method applied to the cloth feeding apparatus according to any one of claims 1 to 8, comprising:
calculating to obtain a theoretical motion track of a feeding tooth rack of the cloth feeding device according to the needle pitch and the rotating speed of a spindle motor for driving a needle rod to move;
and controlling the motion trail output by a front and back driving mechanism of the cloth feeding device so as to enable the feeding tooth rack to move front and back according to the theoretical motion trail.
10. A crank machine, comprising a spindle motor (5) for driving a needle bar to move and a cloth feeding device, characterized in that the cloth feeding device is the cloth feeding device according to any one of claims 1 to 8, and a lower shaft (3) of the cloth feeding device is in transmission connection with the spindle motor (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911402986.4A CN110983639A (en) | 2019-12-30 | 2019-12-30 | Cloth feeding device, cloth feeding device control method and wrist bending machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911402986.4A CN110983639A (en) | 2019-12-30 | 2019-12-30 | Cloth feeding device, cloth feeding device control method and wrist bending machine |
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| CN110983639A true CN110983639A (en) | 2020-04-10 |
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Cited By (1)
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Application publication date: 20200410 |