CN211471782U - Cloth dragging wheel lifting mechanism of sewing machine - Google Patents
Cloth dragging wheel lifting mechanism of sewing machine Download PDFInfo
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- CN211471782U CN211471782U CN201921469773.9U CN201921469773U CN211471782U CN 211471782 U CN211471782 U CN 211471782U CN 201921469773 U CN201921469773 U CN 201921469773U CN 211471782 U CN211471782 U CN 211471782U
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- sewing machine
- worm gear
- lifting mechanism
- mop
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Abstract
The utility model relates to a sewing machine's mop wheel lifting mechanism, it is including setting up mop wheel mechanism and the pressure adjustment mechanism on the back mop mounting bracket, and mop wheel mechanism is by pressure adjustment mechanism control lifting, and it still includes: the worm gear and worm reduction motor is arranged on the rear-towing mounting frame; the rotating part is provided with a shaft hole positioned on the central position and an eccentric shaft far away from the shaft hole, the shaft hole is connected with an output shaft of the worm gear speed reducing motor, and the eccentric shaft is connected with the pressure adjusting mechanism. The lifting mechanism has the advantages of small noise heating amount, capability of timely and accurately controlling the moving stroke of the pressure adjusting mechanism and locking structure.
Description
Technical Field
The utility model relates to a sewing machine equipment technical field specifically says a cloth dragging wheel lifting mechanism of sewing machine.
Background
The sewing machine is a machine which uses one or more sewing threads to form one or more stitches on a sewing material to enable one or more layers of the sewing material to be interwoven or sewn, the sewing machine can be used for sewing fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastic, paper and the like, and the sewn stitches are neat, beautiful, flat and firm, the sewing speed is high, and the use is simple and convenient.
The back of sewing machine holds in the palm the mounting bracket and is equipped with mop wheel mechanism, and mop wheel mechanism makes the cloth carry out the in-process of sewing and can keep leveling and can steady propelling movement, simultaneously, still installs pressure adjustment mechanism and lifting mechanism on the back support mounting bracket, and pressure adjustment mechanism is connected with mop wheel mechanism and is controlled the lifting by lifting mechanism, and when mop wheel mechanism lifted, can get cloth and put cloth, when the mop wheel was transferred, can push down the cloth and carry out the propelling movement.
In the existing market, an air cylinder device or an electromagnet is usually adopted as a lifting mechanism to control the pressure adjusting mechanism to move and a mop wheel mechanism connected with the pressure adjusting mechanism to rotate, a sensor is arranged to detect the lifting stroke and control the on-off of the air cylinder or the electromagnet, the structure has the defects of excessive noise and heat productivity in the lifting process, the stroke of the pressure adjusting mechanism cannot be controlled, and the self-locking structure is not provided.
SUMMERY OF THE UTILITY MODEL
To above circumstances, for overcoming the defect of above prior art, the utility model aims at providing a noise calorific capacity is little, the stroke that control pressure adjustment mechanism that can be timely accurate removed, and possesses the mop wheel lifting mechanism of the sewing machine of locking structure.
In order to achieve the above object, the technical solution of the present invention is:
1. the utility model provides a sewing machine's mop wheel lifting mechanism, it is including setting up mop wheel mechanism and the pressure adjustment mechanism on the back support mounting bracket, and mop wheel mechanism is by pressure adjustment mechanism control lifting, its characterized in that, it still includes:
the worm gear and worm reduction motor is arranged on the rear support mounting frame;
the rotating part is provided with a shaft hole positioned on the central position and an eccentric shaft far away from the shaft hole, the shaft hole is connected with an output shaft of the worm gear speed reducing motor, and the eccentric shaft is connected with the pressure adjusting mechanism.
Preferably, a connecting plate is mounted on the rear support mounting frame, a cavity is formed between the lower end of the connecting plate and the rear support mounting frame, the pressure adjusting mechanism and the rotating piece are mounted on one side, close to the cavity, of the connecting plate, and the worm gear speed reducing motor is mounted on one side, opposite to the cavity, of the connecting plate.
Preferably, a photoelectric sensor is further inserted on the connecting plate, the photoelectric sensor is positioned on any one side of the rotating member, and the photoelectric sensor can sense the rotating direction of the rotating member.
Preferably, the worm gear speed reduction motor comprises a worm gear reduction box and a motor which are connected with each other, and an output shaft of the worm gear reduction box penetrates through the connecting plate to be connected with the rotating piece.
Preferably, the extending arms are symmetrically arranged on two sides of the shaft hole of the rotating part, and the photoelectric sensor can sense the orientation of the extending arms when the eccentric shaft is in the high position and the low position.
Preferably, the photoelectric sensor is inserted on the connecting plate, a gap is left between the photoelectric sensor and the connecting plate, and the extension arm can be inserted into the gap when the eccentric shaft is in the high position and the low position.
Preferably, a rolling bearing is provided between the pressure adjustment mechanism and the eccentric shaft.
Preferably, the mop wheel mechanism comprises a first synchronous wheel, a second synchronous wheel and a belt pulley which are driven by the transmission belt, the first synchronous wheel is detachably connected with the mop wheel, and the belt pulley is arranged above the transmission belt and is in contact with the upper surface of the transmission belt.
Preferably, the first synchronizing wheel is driven by a stepping motor, and the stepping motor is arranged at a position above the worm gear speed reducing motor arranged on the rear support mounting frame.
Compared with the prior art, the utility model has the advantages of:
(1) add and rotate the piece, be equipped with the eccentric shaft on rotating the piece, pressure adjustment mechanism installs on the eccentric shaft, drives pressure adjustment mechanism through the rotation of rotating the piece and removes and rotate rather than the mop wheel mechanism of being connected, and it is little to generate heat the noise little to see the operation in-process from whole, and the volume is less be convenient for install, goes up and down in a flexible way simultaneously.
(2) The worm and gear speed reducing motor is adopted as a power mechanism and comprises a worm and gear speed reducing box and a motor, the worm and gear speed reducing box is provided with a self-locking structure, and the worm and gear speed reducing motor can be locked in a power-off state.
(3) The photoelectric sensor is used for replacing the existing sensor, the detection mode of the photoelectric sensor is non-contact and has the characteristic of high response speed, even if a detection object moves or rotates at a high speed, the detection object can still respond in time, can sense the rotation position of the rotating part and the extending arm thereof in time and feed the position information back to the microprocessor.
(4) The design structure is reasonable and ingenious, and the method has a wide application prospect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an exploded view of a portion of the present invention;
FIG. 3 is an enlarged schematic view of part A of the present invention;
FIG. 4 is a schematic view of the assembly structure of some components of the present invention;
FIG. 5 is a schematic structural view of the mop wheel mechanism of the present invention;
fig. 6 is a schematic structural diagram of the pressure adjustment mechanism of the present invention.
As shown in the figure:
1 back support mounting bracket, 2 mop wheel mechanisms, 2.1 transmission belt, 2.2 first synchronizing wheel, 2.3 second synchronizing wheel, 2.4 belt pulleys, 2.5 mop wheels, 3 pressure adjusting mechanism, 3.1 connecting rod, 3.2 fixed plate, 3.3 axle sleeve, 4 worm gear reducer motor, 4.1 worm gear reduction box, 4.2 motor, 5 rotation pieces, 5.1 axle hole, 5.2 extension arm, 6 eccentric shaft, 7 photoelectric sensor, 8 connecting plates, 9 rolling bearing, 10 step motor.
Detailed Description
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings or the directions or positional relationships that the products of the present invention are usually placed when used, and are only for the convenience of simplifying the description, but do not indicate or imply that the directions are the specific directions and the specific directions structures and operations that the products of the present invention must have, and therefore, the present invention should not be construed as being limited thereto.
Moreover, the microprocessor is also a component of the sewing machine on the market, the type of the microprocessor is consistent with the type which can meet the working requirement on the market, and meanwhile, the structural relationship of the pressure adjusting mechanism 4 is already disclosed; the specific connection mode of the photoelectric sensor, the microprocessor and the worm and gear speed reducing motor is consistent with the common connection mode in the market, so the specific connection relation is not described.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and fig. 2, a cloth dragging wheel lifting mechanism of a sewing machine, which comprises a cloth dragging wheel mechanism 2 arranged on a rear support mounting frame 1, a pressure adjusting mechanism 3, and a cloth dragging wheel mechanism 2 controlled by the pressure adjusting mechanism 3 to lift, and further comprises: worm gear motor 4, rotate piece 5 and photoelectric sensor 7, worm gear motor 4 installs on back support mounting bracket 1, it has shaft hole 5.1 and the eccentric shaft 6 of keeping away from this shaft hole 5.1 setting to rotate piece 5 to set up on the central point puts, shaft hole 5.1 is connected with worm gear motor 4's output shaft and is driven by it, eccentric shaft 6 is connected with pressure adjustment mechanism 3, eccentric shaft 6 rotates and drives pressure adjustment mechanism 3 removal and the mop wheel mechanism who is connected with it with rotating 5 synchronous rotation 2.
As shown in fig. 2 and 4, further, a connecting plate 8 is installed on the rear support mounting bracket 1, a cavity is formed between the lower end of the connecting plate 8 and the rear support mounting bracket 1, the opening of the cavity faces the lower end of the rear support mounting bracket 1, the rotating member 5 and the pressure adjusting mechanism 3 are both installed on one side of the connecting plate 8 close to the cavity, the worm gear reducer motor 4 is installed on one side of the connecting plate 8 opposite to the cavity, and the output shaft of the worm gear reducer motor 4 penetrates through the connecting plate 8 and is connected with the rotating member 5 on the opposite side.
As shown in fig. 2 and 4, further, the photoelectric sensor 7 is installed on any side of the rotating member 5, the photoelectric sensor 7 is further inserted on the connecting plate 8, the photoelectric sensor 7 is located on any side of the rotating member 5, the detection mode of the photoelectric sensor 7 is non-contact and has the characteristic of high response speed, even if the detection object moves at high speed or rotates, the detection object can still respond, the photoelectric sensor 7 in the design can sense according to the rotating direction of the rotating member, and can feed back information to the microprocessor according to different rotating directions of the rotating member 5, and the operation of the worm gear motor 4 is controlled by the microprocessor.
As shown in fig. 1, further, the worm and gear reduction motor 4 comprises a worm and gear reduction box 4.1 and a motor 4.2 which are connected with each other, an output shaft of the worm and gear reduction box 4.1 penetrates through a connecting plate 8 to be connected with the rotating member 5, the worm and gear reduction box 4.1 is provided with a self-locking structure, when a lead angle of a worm is smaller than an equivalent friction angle between meshing wheel teeth, the self-locking property is self-locking in a reverse direction, that is, the worm can only drive the worm to rotate but cannot drive the worm to rotate, the rotating member 5 rotates to drive the pressure adjusting mechanism 3 to move and drive the cloth dragging wheel mechanism 2 connected with the pressure adjusting mechanism to rotate, the photoelectric sensor 7 can feed back the direction information of the rotating member 5 to the microprocessor and control the worm and gear reduction motor 4 to be powered off through the microprocessor, and the worm and gear reduction box 4.
It should be mentioned that the motor 4.2 in the worm gear reduction motor 4 is generally a direct current motor and is the same as the worm gear reduction box 4.1 as the motor 4.2 and the worm gear reduction box 4.1 which are common in the market, can meet the above working requirements and can be matched with each other.
As shown in fig. 6, the pressure adjusting mechanism 3 as described above generally includes a connecting rod 3.1, a fixing plate 3.2 and a shaft sleeve 3.3 are respectively installed at two ends of the connecting rod 3.1, the fixing plate 3.2 is connected with an eccentric shaft 6, the shaft sleeve 3.3 is fixed on the mop wheel mechanism 2, a worm gear accelerating motor 4 controls the connecting rod 3.1 to move, and when the connecting rod 3.1 moves, the connecting rod 3.1 can drive the mop wheel mechanism 2 connected with the connecting rod through the shaft sleeve 3.3 to rotate.
As shown in fig. 2 and 6, further, extending arms 5.2 are symmetrically arranged on both sides of the shaft hole 5.1 of the rotating member 5, the rotating member 5 rotates to make the extending arms 5.2 perform synchronous circular motion, and the photoelectric sensor 7 can sense the orientation of the extending arms 5.2 when the eccentric shaft 6 is at the high position and the low position.
As shown in fig. 2 and 6, further, the photoelectric sensor 7 is inserted into the connecting plate 8 at one side of the extending arm 5.2 of the rotating member, a gap is left between the photoelectric sensor 7 and the connecting plate 8, the extending arm 5.2 can be inserted into the gap when the eccentric shaft 6 is at the high position and the low position, at this time, the photoelectric sensor 7 can sense the position of the extending arm 5.2 and the rotating member 5, and the photoelectric sensor 7 can feed back the position information of the extending arm 5.2 and the rotating member 5 to the microprocessor.
As shown in fig. 3, a rolling bearing 9 is further provided between the pressure adjusting mechanism 3 and the eccentric shaft 6, and the rolling bearing 9 can support the rotating eccentric shaft 6, maintain a normal working position and rotation accuracy, and have good starting performance.
As shown in fig. 5, further, the mop wheel mechanism comprises: the first synchronizing wheel 2.2, the second synchronizing wheel 2.3 and the belt pulley 2.4 are driven by the transmission belt 2.1 and are sequentially arranged, the first synchronizing wheel 2.2 is detachably connected with the mop wheel 2.5, and the belt pulley 2.4 is arranged above the transmission belt 2.1 and is in contact with the upper surface of the transmission belt 2.1 under the general condition.
It should be mentioned that the choice of the mop wheel 2.5 may be the same as the mop wheel 2.5 commonly available on the market and capable of meeting the above-mentioned working requirements, and at the same time, the size of the mop wheel 2.5 may be changed according to the needs of the user, so as to meet the needs of different users.
As shown in fig. 1, further, the first synchronizing wheel 2.2 is driven by a stepping motor 10, the stepping motor 10 is installed above the worm gear and worm speed reduction motor 4 of the rear support mounting frame 1, the stepping motor 10 drives the first synchronizing wheel 2.2 to rotate, the first synchronizing wheel 2.2 drives the transmission belt 2.1 to drive the second synchronizing wheel 2.3 and the belt pulley 2.4, and the second synchronizing wheel 2.2 drives the mop wheel 2.5 to rotate.
It should be mentioned that the stepping motor 10 is generally a dc motor, which is the same as the type and model of the stepping motor that is commonly available on the market and can meet the above-mentioned working requirements.
With reference to fig. 1 to 6 and the above description, the working process of the sewing machine lifting mechanism is described, after the sewing machine is started, the stepping motor 10 operates, and the mop wheel 2.5 is driven to rotate by the mutual cooperation of the transmission belt 2.1, the first synchronous wheel 2.2, the second synchronous wheel 2.3 and the belt pulley 2.4, when an operator takes cloth, the motor 4.2 of the worm and gear speed reduction motor 4 drives the rotating member to rotate, the extension arm 5.2 of the rotating member 5 rotates to a position parallel to the horizontal plane and is inserted into the gap between the photoelectric sensor 7 and the connecting plate 8, the photoelectric sensor 7 senses the position of the extension arm 5.2 and feeds back the sensed orientation information of the extension arm 5.2 to the microprocessor, the microprocessor controls the current of the motor 4.2 of the worm and gear motor 4 to stop operating, the pressure adjusting mechanism 3 can be prevented from moving continuously after power failure due to the self-locking function of the worm and gear speed reduction box 4.1, when the pressure adjusting mechanism 3 drives the mop wheel mechanism 2 to lift, the cloth can be put, and when the pressure adjusting mechanism 3 drives the mop wheel mechanism 2 to put down, the cloth can be pressed by the mop wheel 2.5 to feed.
This design adopts worm gear motor 4 to drive and rotates 5 rotations, worm gear motor 4 possesses foretell self-locking function, make worm gear motor 4 realize the locking under the outage state, and simultaneously, it is equipped with eccentric shaft 6 on 5 to rotate, pressure adjustment mechanism 3 is direct to be connected with eccentric shaft 6, it can drive pressure adjustment mechanism 3 removal and rotate rather than the mop wheel mechanism 2 who is connected to rotate 5 along with worm gear motor 4 rotation, photoelectric sensor 7's detection mode is non-contact and has the fast characteristics of response speed, even the detection object high-speed removal or rotate still can in time make the response, the perception that can be timely rotates 5 and extension arm 5.2 rotates the position and with position information feedback to microprocessor.
The foregoing embodiments and description have been provided to illustrate the principles and preferred embodiments of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed.
Claims (9)
1. The utility model provides a sewing machine's mop wheel lifting mechanism, it is including setting up mop wheel mechanism (2) and pressure adjustment mechanism (3) on the back support mounting bracket (1), mop wheel mechanism (2) by pressure adjustment mechanism (3) control lifting, its characterized in that, it still includes:
the worm gear and worm reduction motor (4) is arranged on the rear support mounting rack (1);
the rotating part (5) is provided with a shaft hole (5.1) positioned on the central position and an eccentric shaft (6) far away from the shaft hole (5.1), the shaft hole (5.1) is connected with an output shaft of the worm gear speed reducing motor (4), and the eccentric shaft (6) is connected with the pressure adjusting mechanism (3).
2. The mop wheel lifting mechanism of the sewing machine as claimed in claim 1, wherein a connecting plate (8) is mounted on the rear support mounting frame (1), a cavity is formed between the lower end of the connecting plate (8) and the rear support mounting frame (1), the pressure adjusting mechanism (3) and the rotating member (5) are both mounted on one side of the connecting plate (8) close to the cavity, and the worm gear speed reduction motor (4) is mounted on one side of the connecting plate (8) opposite to the cavity.
3. The cloth-dragging wheel lifting mechanism of sewing machine according to claim 2, characterized in that a photoelectric sensor (7) is inserted on the connecting plate (8), and the photoelectric sensor is positioned on any side of the rotating member (5), and the photoelectric sensor (7) can sense the rotating direction of the rotating member (5).
4. The mop wheel lifting mechanism of the sewing machine as claimed in claim 3, characterized in that the worm gear reduction motor (4) comprises a worm gear reduction box (4.1) and a motor (4.2) which are connected with each other, and an output shaft of the worm gear reduction box (4.1) passes through the connecting plate (8) to be connected with the rotating piece (5).
5. The cloth dragging wheel lifting mechanism of the sewing machine as claimed in claim 4, wherein the shaft hole (5.1) of the rotating member (5) is symmetrically provided with extending arms (5.2) at both sides, and the photoelectric sensor (7) can sense the orientation of the extending arms (5.2) when the eccentric shaft (6) is at the high position and the low position.
6. Lifting mechanism according to claim 5, characterized in that said photoelectric sensor (7) is inserted on said connection plate (8) with a gap between said photoelectric sensor (7) and said connection plate (8), said spreading arm (5.2) being insertable in said gap when said eccentric shaft (6) is in the high position and in the low position.
7. The lifting mechanism of the mop wheel of the sewing machine according to claim 1, characterized in that a rolling bearing (9) is arranged between the pressure adjusting mechanism (3) and the eccentric shaft (6).
8. Lifting mechanism of a mop wheel of a sewing machine according to claim 1, characterized in that the mop wheel mechanism (2) comprises a first synchronizing wheel (2.2) driven by a conveyor belt (2.1), a second synchronizing wheel (2.3) and a belt pulley (2.4), the first synchronizing wheel (2.2) being detachably connected with a mop wheel (2.5), the belt pulley (2.4) being mounted above the conveyor belt (2.1) and in contact with the upper surface thereof.
9. The cloth dragging wheel lifting mechanism of sewing machine according to claim 8, characterized in that the first synchronizing wheel (2.2) is driven by a stepping motor (10), the stepping motor (10) is mounted on the rear bracket mounting frame (1) at a position above the worm gear reduction motor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921469773.9U CN211471782U (en) | 2019-09-05 | 2019-09-05 | Cloth dragging wheel lifting mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921469773.9U CN211471782U (en) | 2019-09-05 | 2019-09-05 | Cloth dragging wheel lifting mechanism of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211471782U true CN211471782U (en) | 2020-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921469773.9U Active CN211471782U (en) | 2019-09-05 | 2019-09-05 | Cloth dragging wheel lifting mechanism of sewing machine |
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| Country | Link |
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| CN (1) | CN211471782U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114481462A (en) * | 2020-11-12 | 2022-05-13 | 杰克科技股份有限公司 | Rear tug device of sewing machine |
-
2019
- 2019-09-05 CN CN201921469773.9U patent/CN211471782U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114481462A (en) * | 2020-11-12 | 2022-05-13 | 杰克科技股份有限公司 | Rear tug device of sewing machine |
| CN114481462B (en) * | 2020-11-12 | 2023-06-27 | 杰克科技股份有限公司 | Rear tug device of sewing machine |
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