CN218969525U - Sewing machine cloth thickness detection device - Google Patents
Sewing machine cloth thickness detection device Download PDFInfo
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- CN218969525U CN218969525U CN202222864796.8U CN202222864796U CN218969525U CN 218969525 U CN218969525 U CN 218969525U CN 202222864796 U CN202222864796 U CN 202222864796U CN 218969525 U CN218969525 U CN 218969525U
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- sewing machine
- detection device
- presser foot
- thickness detection
- cloth thickness
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Abstract
The utility model relates to a cloth thickness detection device of a sewing machine, and belongs to the technical field of cloth thickness detection. The utility model comprises a presser foot and a roller arranged in the feeding direction of the presser foot, wherein the roller is connected with a rotating shaft through a rotating rod, and an angle sensor for detecting the rotating angle of the rotating shaft or the rotating rod is arranged on the rotating shaft. Through being equipped with the gyro wheel in presser foot feed direction, thereby the gyro wheel is rotated by cloth jack-up emergence lifting drive dwang and axis of rotation, thereby detects rotation angle and obtains cloth thickness, not only can detect in advance, for traditional through electronic sensor direct detection thickness, it is more accurate and the reliability is higher to measure, and it is more convenient to repair.
Description
Technical Field
The utility model belongs to the technical field of cloth thickness detection, and particularly relates to a cloth thickness detection device of a sewing machine.
Background
In the production of clothing, the sewing machine can meet fabrics with different thicknesses in the sewing process, or the thickness of the fabrics can be changed in the sewing process. For fabrics with different thicknesses, the sewing speed needs to be limited in the sewing process so as to prevent the occurrence of broken needles; at the interface of thickness variation (thin, thick and thin), the force variation of cloth feeding can cause the stitch and needle pitch to change. Therefore, it is necessary to detect the thickness of the cloth and change the control method of the sewing machine.
The existing direct detection is carried out through a sensor, and hysteresis exists in detection: when the magnetic flux induced by the sensor changes, the interface of the cloth thickness change reaches the lower part of the presser foot and the needle. The control system then responds to this signal by adjusting, changing, and retarding the control method. And the linearity of the thickness variation detection signal is poor, and the thickness variation detection range is small: the moving distance of the magnet relative to the Hall sensor has poor linearity with the change of magnetic flux; and the signal will disappear once the magnet moves out of the sensing range.
Through searching, chinese patent utility model: the utility model provides an automatic sewing machine's seam material thickness detection device (filing date is 2017.08.10, filing number is CN 207109310U), this application is including the platen that is used for placing the seam material, be located platen top side and the installation body that can reciprocate, fix at the quilt of installation body lower extreme and install the thickness detection sensor on the platen, by the quilt with thickness detection sensor up and down just setting up, and thickness detection sensor's upper end has the response face of response quilt, this response face flushes with the up end of platen, or is less than the up end of platen. The thickness of the sewing material on the platen can be accurately detected through the mutual matching of the thickness detection sensor and the sensed piece. However, the disadvantage of this application is that the thickness detection sensor is inaccurate or malfunctioning in long-term use, and the maintenance and replacement are complicated.
Disclosure of Invention
1. Technical problem to be solved by the utility model
The utility model aims to solve the problems that the existing thickness detection sensor directly detects cloth, inaccurate or malfunctioning exists in long-term use, and the maintenance and replacement are complicated.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:
the utility model relates to a cloth thickness detection device of a sewing machine, which comprises a presser foot and a roller arranged in the feeding direction of the presser foot, wherein the roller is connected with a rotating shaft through a rotating rod, and an angle sensor for detecting the rotating angle of the rotating shaft or the rotating rod is arranged on the rotating shaft.
Preferably, the presser foot is connected with the machine body through a cutting assembly, a groove is formed in the cutting assembly, a protruding block is arranged in the middle section of the rotating rod, and the protruding block is embedded into the groove and moves freely along the groove.
Preferably, the side edge of the machine body extends outwards to form a connecting block, and the connecting block is rotationally connected with the rotating shaft.
Preferably, the weight of the roller is adjustable and specifically configured such that the roller is in line with the pressure of the presser foot against the same cloth.
Preferably, the groove is provided with a damping device in a side close to the lifting direction of the rotating rod, and the damping device is configured to enable the roller and the presser foot to have the same cloth pressure.
Preferably, the roller is arranged on an extension line of a slotting central axis of the presser foot.
Preferably, the sewing machine further comprises a controller and a speed adjusting assembly, wherein the controller is electrically connected with the angle sensor and the speed adjusting assembly, the controller receives detection data of the angle sensor and calculates and sends corresponding control signals to the speed adjusting assembly, and the speed adjusting assembly adjusts the sewing speed of the sewing needle according to the control signals.
Preferably, the cutting assembly is connected with the machine body through a first connecting rod, the machine body is connected with the sewing needle through a second connecting rod, one end, far away from the sewing needle, of the second connecting rod is connected with a driving mechanism, and the second connecting rod is movably connected with the machine body.
Preferably, the angle sensor detects an initial angle a 1 The vertical height from the roller corresponding to the initial angle to the rotating shaft is h 1 The method comprises the steps of carrying out a first treatment on the surface of the The real-time angle of the angle sensor in the detection working state is a 2 The method comprises the steps of carrying out a first treatment on the surface of the Cloth thickness corresponding to real-time angle
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:
the utility model relates to a cloth thickness detection device of a sewing machine, which comprises a presser foot and a roller arranged in the feeding direction of the presser foot, wherein the roller is connected with a rotating shaft through a rotating rod, and an angle sensor for detecting the rotating angle of the rotating shaft or the rotating rod is arranged on the rotating shaft. Through being equipped with the gyro wheel in presser foot feed direction, thereby the gyro wheel is rotated by cloth jack-up emergence lifting drive dwang and axis of rotation, thereby detects rotation angle and obtains cloth thickness, not only can detect in advance, for traditional through electronic sensor direct detection thickness, it is more accurate and the reliability is higher to measure, and it is more convenient to repair.
Drawings
Fig. 1 is a schematic diagram of the whole structure of a cloth thickness detecting device of a sewing machine according to the present utility model.
Reference numerals in the schematic drawings illustrate:
110. a body; 111. a connecting block; 112. a first connecting rod; 113. a second connecting rod; 120. a rotating shaft; 130. an angle sensor; 140. a rotating lever; 141. a roller; 142. a bump; 150. a fitting assembly; 151. a rotation shaft; 152. a groove; 160. a presser foot; 170. a sewing needle.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
Referring to fig. 1, a cloth thickness detecting device of a sewing machine according to the present embodiment includes a presser foot 160 and a roller 141 disposed in a feeding direction of the presser foot 160, the roller 141 is connected with a rotation shaft 120 through a rotation rod 140, and an angle sensor 130 for detecting a rotation angle of the rotation shaft 120 or the rotation rod 140 is disposed on the rotation shaft 120. According to the utility model, the roller 141 is arranged in the feeding direction of the presser foot 160, the roller 141 is jacked by cloth to lift so as to drive the rotating rod 140 and the rotating shaft 120 to rotate, and the rotating angle is detected so as to obtain the thickness of the cloth, so that the thickness can be detected in advance, and compared with the traditional method of directly detecting the thickness through an electronic sensor, the thickness measuring device is more accurate and more reliable, and is more convenient to maintain.
The presser foot 160 is connected with the machine body 110 through the engaging component 150, a groove 152 is provided on the engaging component 150, a protruding block 142 is provided at the middle section of the rotating rod 140, and the protruding block 142 is embedded into the groove 152 and moves freely along the groove 152. The shape of the groove 152 is a crescent arc, and the radian is adapted to the radian of the moving arc track of the protruding block 142, so that the protruding block 142 is not subject to resistance in the moving process, and the protruding block 142 is effectively prevented from falling off from the groove 152.
The lateral side of the body 110 extends outwards to form a connection block 111, and the connection block 111 is rotatably connected with the rotation shaft 120. The weight of the roller 141 is adjustable and specifically configured such that the roller 141 and the presser foot 160 are in line with the pressure of the same cloth. The measuring error caused by different pressures of the same cloth at the roller 141 and the presser foot 160 can be reduced, and the accuracy of thickness detection is further ensured. And the roller 141 can pre-press the cloth to be pressed by the presser foot 160, so that the cloth can be in better contact with the presser foot 160 later.
The roller 141 is disposed on an extension line of the center axis of the slot of the presser foot 160. Not only can the cloth area contacted by the roller 141 and the presser foot 160 be ensured to be the same, but also the roller 141 can pre-press the cloth which is pressed by the presser foot 160, so that the cloth can be contacted with the presser foot 160 better.
The rollers 141 may be further provided with 2 rollers symmetrically disposed on an extension line of the center axis of the slot of the presser foot 160. The distance between the 2 rollers 141 is 2-4 times the grooving width of the presser foot 160, and the two rollers 141 are respectively disposed on opposite sides of the rotating lever 140.
The outer side of the roller 141 is provided with an elastic circular ring with the diameter of 10-20% of the thickness of the roller 141, the outer side of the elastic circular ring is provided with a friction layer, and the surface of the friction layer is provided with particle bulges or grains. When 2 rollers 141 are provided, the diameters of the two rollers 141 differ by 5 to 10%. The spread gap caused by the fact that the cloth is not paved can be effectively avoided, and the detection accuracy is further improved.
The sewing machine further comprises a controller and a speed adjusting component, wherein the controller is electrically connected with the angle sensor 130 and the speed adjusting component, the controller receives detection data of the angle sensor 130 and calculates and sends corresponding control signals to the speed adjusting component, and the speed adjusting component adjusts the sewing speed of the sewing needle 170 according to the control signals. When the thickness is changed, the sewing speed of the sewing needle 170 is also changed, so that the occurrence of broken needles can be effectively prevented; and the change of stitch and needle pitch caused by the change of the force of cloth feeding at the interface (thin, thick and thin) of thickness change is avoided.
The cutting assembly 150 is connected with the machine body 110 through a first connecting rod 112, the machine body 110 is connected with the sewing needle 170 through a second connecting rod 113, one end of the second connecting rod 113 away from the sewing needle 170 is connected with a driving mechanism, and the second connecting rod 113 is movably connected with the machine body 110.
The angle sensor 130 detects an initial angle a 1 The vertical height from the roller 141 corresponding to the initial angle to the rotation shaft 120 is h 1 The method comprises the steps of carrying out a first treatment on the surface of the The angle sensor 130 detects that the real-time angle in the working state is a 2 The method comprises the steps of carrying out a first treatment on the surface of the Cloth thickness corresponding to real-time angle
Example 2
The general structure of this embodiment is the same as that of embodiment 1, except that the groove 152 is provided with a damping device in a side close to the lifting direction of the rotating lever 140, and the damping device is configured such that the pressure of the roller 141 and the presser foot 160 against the same cloth is uniform. The measuring error caused by different pressures of the same cloth at the roller 141 and the presser foot 160 can be reduced, and the accuracy of thickness detection is further ensured. The damping device is an elastic damping structure.
The foregoing examples merely illustrate certain embodiments of the utility model and are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that it is possible for a person skilled in the art to make several variants and modifications without departing from the concept of the utility model, all of which fall within the scope of protection of the utility model; accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (9)
1. A sewing machine cloth thickness detection device, its characterized in that: including presser foot (160) and set up in gyro wheel (141) on presser foot (160) feeding direction, gyro wheel (141) are connected with axis of rotation (120) through dwang (140), be equipped with on axis of rotation (120) and be used for detecting axis of rotation (120) or dwang (140) turned angle's angle sensor (130).
2. The sewing machine cloth thickness detection device according to claim 1, wherein: the presser foot (160) is connected with the machine body (110) through the cutting assembly (150), a groove (152) is formed in the cutting assembly (150), a protruding block (142) is arranged in the middle section of the rotating rod (140), and the protruding block (142) is embedded into the groove (152) and moves freely along the groove (152).
3. The sewing machine cloth thickness detection device according to claim 2, wherein: the side edge of the machine body (110) extends outwards to form a connecting block (111), and the connecting block (111) is rotationally connected with the rotating shaft (120).
4. The sewing machine cloth thickness detection device according to claim 2, wherein: the weight of the roller (141) is adjustable and specifically configured such that the roller (141) and the presser foot (160) are in line with the pressure of the same cloth.
5. The sewing machine cloth thickness detection device according to claim 2, wherein: the groove (152) is provided with a damping device in one side close to the lifting direction of the rotating rod (140), and the damping device is configured to enable the roller (141) and the presser foot (160) to have consistent pressure on the same cloth.
6. The sewing machine cloth thickness detection device according to claim 1, wherein: the roller (141) is arranged on an extension line of a slotting central axis of the presser foot (160).
7. The sewing machine cloth thickness detection device according to claim 1, wherein: the sewing machine further comprises a controller and a speed adjusting assembly, the controller is electrically connected with the angle sensor (130) and the speed adjusting assembly, the controller receives detection data of the angle sensor (130) and calculates and sends corresponding control signals to the speed adjusting assembly, and the speed adjusting assembly adjusts the sewing speed of the sewing needle (170) according to the control signals.
8. The sewing machine cloth thickness detection device according to claim 2, wherein: the cutting assembly (150) is connected with the machine body (110) through a first connecting rod (112), the machine body (110) is connected with the sewing needle (170) through a second connecting rod (113), one end, away from the sewing needle (170), of the second connecting rod (113) is connected with a driving mechanism, and the second connecting rod (113) is movably connected with the machine body (110).
9. The sewing machine cloth thickness detection device according to claim 7, wherein: the angle sensor (130) detects an initial angle a 1 The vertical height from the roller (141) corresponding to the initial angle to the rotation shaft (120) is h 1 The method comprises the steps of carrying out a first treatment on the surface of the The real-time angle of the angle sensor (130) in the detection working state is a 2 The method comprises the steps of carrying out a first treatment on the surface of the Cloth thickness corresponding to real-time angle
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222864796.8U CN218969525U (en) | 2022-10-29 | 2022-10-29 | Sewing machine cloth thickness detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222864796.8U CN218969525U (en) | 2022-10-29 | 2022-10-29 | Sewing machine cloth thickness detection device |
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| CN218969525U true CN218969525U (en) | 2023-05-05 |
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| CN202222864796.8U Active CN218969525U (en) | 2022-10-29 | 2022-10-29 | Sewing machine cloth thickness detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506084A (en) * | 2022-10-29 | 2022-12-23 | 上海瑞仓电子科技有限公司 | Control system and method for reducing damage of sewing machine needle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506084A (en) * | 2022-10-29 | 2022-12-23 | 上海瑞仓电子科技有限公司 | Control system and method for reducing damage of sewing machine needle |
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