CN112760840A - Flat seaming machine vibration and noise reduction device - Google Patents
Flat seaming machine vibration and noise reduction device Download PDFInfo
- Publication number
- CN112760840A CN112760840A CN202011580016.6A CN202011580016A CN112760840A CN 112760840 A CN112760840 A CN 112760840A CN 202011580016 A CN202011580016 A CN 202011580016A CN 112760840 A CN112760840 A CN 112760840A
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- needle bar
- needle
- needle rod
- crank
- hole
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B55/00—Needle holders; Needle bars
- D05B55/14—Needle-bar drives
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention comprises a machine shell, an upper shaft and a needle rod mechanism, wherein the needle rod mechanism comprises a needle rod crank, a needle rod crank pin, a needle rod connecting rod, a needle rod joint, a needle rod sliding block guide rail, a needle rod and a needle prick. The upper shaft is installed on the machine shell and does rotary motion, the needle rod crank is fixed on the upper shaft and does rotary motion together with the upper shaft, the needle rod connecting rod is connected to the needle rod crank through the needle rod crank pin, the needle rod connecting rod is connected with the needle rod through the needle rod joint, so that the needle rod does up-and-down motion in the needle rod hole of the machine shell, the needle rod joint is installed on the needle rod sliding block guide rail through the needle rod sliding block, the needle rod sliding block guide rail is installed on the machine shell and converts the rotary motion of the needle rod crank into the up-and-down linear motion of. The invention greatly reduces the vibration and the sound of the flat seaming machine during high-speed operation, improves the working performance of the flat seaming machine and improves the working environment of operators by changing the motion track of the gravity center of the needle rod mechanism.
Description
Technical Field
The invention discloses a flat seaming machine vibration and noise reduction device, and relates to the technical field of clothing manufacturing equipment.
Background
A flat seaming machine is a machine that uses one or more sewing threads to form one or more stitches in a seam material, thereby interweaving or stitching one or more layers of the seam material. The flat seaming machine can sew fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastic, paper and the like, and the sewed stitches are neat, beautiful, flat and firm, the sewing speed is high, and the use is simple and convenient. However, the flat seaming machine in the prior art has great vibration and sound in the operation process, which affects the performance of the machine, and the excessive sound of the machine is not beneficial to the physical and mental health of operators.
Disclosure of Invention
In order to solve the problems, the invention discloses a flat seaming machine vibration and noise reduction device, which solves the technical problems of high vibration and large sound when the flat seaming machine works at high speed in the prior art; the invention comprises a machine shell, an upper shaft and a needle rod mechanism, wherein the needle rod mechanism comprises a needle rod crank, a needle rod crank pin, a needle rod connecting rod, a needle rod joint, a needle rod sliding block guide rail, a needle rod and a needle prick. The upper shaft is installed on the machine shell and does rotary motion, the needle rod crank is fixed on the upper shaft and does rotary motion together with the upper shaft, the needle rod connecting rod is connected to the needle rod crank through the needle rod crank pin, the needle rod connecting rod is connected with the needle rod through the needle rod joint, so that the needle rod does up-and-down motion in the needle rod hole of the machine shell, the needle rod joint is installed on the needle rod sliding block guide rail through the needle rod sliding block, the needle rod sliding block guide rail is installed on the machine shell and converts the rotary motion of the needle rod crank into the up-and-down linear motion of.
The technical scheme adopted by the invention is as follows:
the invention discloses a flat seaming machine vibration and noise reduction device which comprises a machine shell, an upper shaft and a needle rod mechanism and is characterized in that the needle rod mechanism comprises a needle rod, a needle rod crank, a needle rod connecting rod and a guide rail, wherein the needle rod connecting rod is a strip-shaped connecting piece with a through hole structure at the upper part and the lower part, the through hole at the upper end of the needle rod connecting rod is connected with the needle rod crank, the through hole at the lower end of the needle rod connecting rod is connected with the needle rod and the guide rail.
Furthermore, the upper shaft is an eccentric crankshaft, the left side of the upper shaft is pressed into the front hole of the shell after the bearing is pressed in, the right side of the upper shaft is inserted into the coupler and fixed by screws, and the coupler is pressed onto the bearing and installed in the hole of the shell.
Furthermore, the upper shaft is installed in the machine shell, the needle rod mechanism comprises a needle rod crank, the needle rod crank is of a semicircular multi-directional through hole structure, and the left half side of the upper shaft penetrates through a central connecting hole of the needle rod crank and is fixedly connected with the upper shaft through a screw.
Further, the needle bar crank passes needle bar connecting rod upper end through-hole and is connected with the needle bar connecting rod through the needle bar crank pin that transversely sets up, the needle bar crank pin penetrates needle bar crank connecting hole, forms fixed connection through the screw of arranging with needle bar crank pin looks vertical direction with the needle bar crank.
Furthermore, the through hole at the lower end of the needle rod connecting rod is sleeved on the needle rod connector, and the needle rod connector penetrates through the lower end of the needle rod connecting rod and is inserted into the sliding block hole.
Furthermore, the needle rod joint end is of an upper through hole structure and a lower through hole structure, the needle rod is vertically inserted into the needle rod joint end through hole from the upper end and is fixedly connected through a transversely arranged screw, and the needle stick is inserted into the needle rod joint end from the lower end and is installed on the needle rod.
Furthermore, the sliding block forms sliding connection on a guide rail, and the guide rail is fixedly connected with the machine shell through a screw.
The invention has the following technical effects:
the invention changes the motion track of the gravity center of the needle rod mechanism to convert the rotary motion of the crank of the needle rod into the up-and-down linear motion of the needle rod, thereby greatly reducing the vibration and the sound of the flat seaming machine during high-speed operation, improving the working performance of the flat seaming machine and improving the working environment of operators.
Drawings
FIG. 1 is a schematic structural view of a flat seaming machine vibration and noise reduction device;
FIG. 2 is a schematic view of a needle bar mechanism of a vibration and noise reduction device of the flat seaming machine;
FIG. 3 is a cross-sectional view of the needle bar and the needle bar crank of the vibration and noise reduction device of the flat seaming machine;
FIG. 4 is a comparison diagram of the motion locus of the center of gravity of the needle bar mechanism;
FIG. 5 is a graph of noise versus time during operation;
fig. 6 is a graph comparing vibration during operation.
The labels in the figure are: 1-a machine shell; 2, upper shaft; 3-a needle bar mechanism; 4-needle bar crank; 5-a screw; 6-needle bar connecting rod;
7-needle bar crank pin; 8-a screw; 9-needle bar; 10-needle bar guide rail; 11-needle bar slide block; 12-a screw; 13-needle bar joint;
14-a screw; 15-needle prick.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
In the present embodiment, the data used are preferred, but not limiting the present invention.
As shown in fig. 1-3, the embodiment provides a flat seaming machine vibration and noise reduction device, which comprises a machine shell, an upper shaft and a needle rod mechanism, and is characterized in that the needle rod mechanism comprises a needle rod, a needle rod crank, a needle rod connecting rod and a guide rail, the needle rod connecting rod is a strip-shaped connecting piece with a through hole structure at the upper part and the lower part, the through hole at the upper end of the needle rod connecting rod is connected with the needle rod crank, the through hole at the lower end of the needle rod connecting rod is connected with the needle rod and. Preferably, the motion track of the gravity center of the needle rod mechanism is changed through the structure, vibration and sound of the flat seaming machine during high-speed operation are greatly reduced, the working performance of the flat seaming machine is improved, meanwhile, the working efficiency is improved through the improvement of the working performance of the flat seaming machine, the useless work of the flat seaming machine is avoided, and the service life of the flat seaming machine is prolonged.
In this embodiment, the upper shaft is an eccentric crankshaft, the left side of the upper shaft is pressed into the front hole of the housing after the bearing is pressed in, the right side of the upper shaft is inserted into the coupler and fixed by the screw, and the coupler is pressed onto the bearing and installed in the hole of the housing. Preferably, the shaft is tightly matched with the bearing inner ring, the bearing outer ring is tightly matched with the machine shell hole, and when the shaft rotates at a high speed, only balls in the bearing move between the bearing inner ring and the bearing outer ring, so that friction force is reduced, and heating sound is reduced.
In this embodiment, the upper shaft is installed in the casing, and the needle bar mechanism includes the needle bar crank, and the needle bar crank is the multidirectional through-hole structure of semicircle, the upper shaft left half axle penetrates needle bar crank center connecting hole, forms fixed connection through screw and upper shaft. In the present embodiment, as shown in fig. 3, the aperture of the central connecting hole of the crank of the needle bar is preferably 27 mm.
In this embodiment, the needle bar crank passes needle bar connecting rod upper end through-hole and needle bar connecting rod through the needle bar crank pin that transversely sets up and is connected, the needle bar crank pin penetrates needle bar crank connecting hole, forms fixed connection through the screw and the needle bar crank that arrange with needle bar crank pin looks vertical direction.
In this embodiment, the through hole at the lower end of the needle rod connecting rod is sleeved on the needle rod joint, and the needle rod joint penetrates through the lower end of the needle rod connecting rod and is inserted into the slider hole.
In this embodiment, the needle bar joint end is upper and lower through-hole structure, and the needle bar forms fixed connection through the screw that transversely sets up from the upper end perpendicular insertion needle bar joint end through-hole, and the needle bar connecting rod passes through the needle bar joint and connects the needle bar, makes the needle bar do the up-and-down motion in the casing needle bar hole, and the needle prick is installed on the needle bar from the lower extreme insertion needle bar joint end, the needle prick pipe diameter is less than the needle bar pipe diameter, installs and assists the needle bar to do linear motion from top to.
In the present embodiment, as shown in fig. 3, the needle shaft is preferably a hollow cylindrical rod member having an inner diameter
Set up the screw round hole in the needle bar lower part, the screw passes the horizontal round hole of coincident needle bar joint and the screw round hole that the needle bar lower part set up, and hollow cylinder and internal diameter 3.4mm design have guaranteed optimally that needle bar and needle bar articulate wholeness and wholeness, make the upper and lower linear motion of needle bar more stable, satisfy the aperture that the lower extreme needle pricked and inserted in the needle bar simultaneously, guarantee the stability of needle prick and needle bar connection. The length L of the needle rod is 130mm, one third of the height of the needle rod is fixed on the needle rod joint, the length design of 130mm is preferably adopted to meet the requirement that the lower part of the needle rod has enough space when the needle rod works up and down, and meanwhile, the length L of the needle rod is 130mm, so that the needle rod can move up and down to the maximum extent when the needle rod works, and the occurrence of transverse deviation is avoided.
In the embodiment, the sliding block forms sliding connection on the guide rail, and the guide rail is fixedly connected with the shell through a screw; in the embodiment, the needle rod joint is arranged on the needle rod slide block guide rail through the needle rod slide block, and the needle rod slide block guide rail is arranged on the machine shell to convert the rotary motion of the needle rod crank into the up-and-down linear motion of the needle rod.
The following comparative experimental data were obtained with reference to the background art and FIGS. 4-6:
in the test, the sound pressure level of the noise is measured by adopting a common sound level meter, the length unit mum is adopted as a vibration measurement unit, the test measurement point is positioned at the position parallel to the water surface of the device, the process of running the flat seaming machine at the rotating speed of 1000-5000 is measured, the two groups of test measurement conditions are consistent, the environment is kept the same,
the first group of tests adopt a flat seaming machine device in the prior art in the background technology to measure the rotating motion track of the needle rod crank mechanism; in the second group of tests, the vibration and noise reduction device of the flat seaming machine is adopted to measure that the needle rod crank mechanism is jointed in the X-axis direction and has a linear motion track;
the rotating speed is 1000-: the sound pressure levels of the first and second sets of tests are in a rising trend at the same time, but the sound pressure level measured by the first set of tests is in the range of 65-70 db; the second set of tests measured sound pressure levels in the range of 58-64 db.
The vibration values measured by the first group of tests and the second group of tests are in a descending trend at the same time, but the vibration values measured by the first group of tests are in the range of 150-; the second set of tests measured vibration values in the range of 90-300 μm.
Rotation speed 2000-3000 r/min: the sound pressure levels of the first group and the second group of tests are in ascending trend at the same time, and the sound pressure level measured by the first group of tests is in the range of 70-75 db; the second set of tests measured sound pressure levels in the range of 64-70db, during which the second set of tests measured sound pressure levels momentarily exceeded the first set of measured noise.
The first group of tests show that the vibration is in an ascending trend, and the measured vibration value is in the range of 150-; the second set of tests measured vibration values in the range 90-100 μm, with a minimum vibration value of 75 μm in this interval.
Rotating speed 3000-: the sound pressure levels of the first group and the second group of tests are in ascending trend at the same time, and the sound pressure level measured by the first group of tests is in the range of 75-82 db; the second set of tests measured sound pressure levels in the range of 70-78 db.
The first group of tests show that the vibration is in an ascending trend, the vibration value is in the range of 300-; the second group of tests measured that the vibration value is within the range of 100-.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (7)
1. The utility model provides a device of making an uproar falls in flat seaming machine damping, includes casing (1), upper shaft (2) and needle bar mechanism (3), its characterized in that, needle bar mechanism (3) are including needle bar (9), needle bar crank (4), needle bar connecting rod (6) and guide rail (10), needle bar connecting rod (6) are the bar connecting piece of through-hole structure from top to bottom, and needle bar crank (4) is connected to needle bar connecting rod (6) upper end through-hole, and needle bar (9) and guide rail (10) are connected to needle bar connecting rod (6) lower extreme through-hole, and upper and lower both ends combined action makes linear motion.
2. The flat seaming machine vibration damping and noise reducing device according to claim 1, wherein the upper shaft (2) is an eccentric crankshaft, the left side of the upper shaft is pressed into a bearing and then inserted into a front hole of the machine shell, the right side of the upper shaft is inserted into a coupler and fixed by a screw, the coupler presses the bearing and is installed into a hole of the machine shell, and the upper shaft rotates.
3. The flat seaming machine vibration damping and noise reducing device according to claim 2, wherein the upper shaft (2) is installed in the machine shell (1), the needle rod mechanism (3) comprises a needle rod crank (4), the needle rod crank (4) is of an eccentric semicircular multidirectional through hole structure, and the left half side of the upper shaft (2) penetrates through a central connecting hole of the needle rod crank (4) and is fixedly connected with the upper shaft (2) through a screw (5).
4. The flat seaming machine vibration and noise reduction device according to claim 3, wherein the needle bar crank (4) penetrates through a through hole at the upper end of the needle bar connecting rod (6) through a transversely arranged needle bar crank pin (7) to be connected with the needle bar connecting rod (6), the needle bar crank pin (7) penetrates through a connecting hole of the needle bar crank (4), and the needle bar crank (4) is fixedly connected with the needle bar crank (4) through a screw (8) which is arranged in a direction perpendicular to the needle bar crank pin (7).
5. A flat seaming machine vibration damping and noise reducing device according to claim 4, characterized in that the through hole at the lower end of the needle bar connecting rod (6) is sleeved on the needle bar joint (13), and the needle bar joint (13) penetrates through the lower end of the needle bar connecting rod (6) and is inserted into the hole of the sliding block (11).
6. A flat seaming machine vibration damping and noise reducing device according to claim 5, characterized in that the end of the needle bar joint (13) is of an upper and lower through hole structure, the needle bar (9) is vertically inserted into the through hole of the end of the needle bar joint (13) from the upper end and forms a fixed connection through a transversely arranged screw (14), and a needle stick is inserted into the end of the needle bar joint (13) from the lower end and is installed on the needle bar (9).
7. A flat seaming machine vibration damping and noise reducing device according to claim 5, characterized in that the sliding block (11) forms a sliding connection on the guide rail (10), and the guide rail (10) is fixedly connected with the machine shell (1) through a screw (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011580016.6A CN112760840A (en) | 2020-12-25 | 2020-12-25 | Flat seaming machine vibration and noise reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011580016.6A CN112760840A (en) | 2020-12-25 | 2020-12-25 | Flat seaming machine vibration and noise reduction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112760840A true CN112760840A (en) | 2021-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011580016.6A Pending CN112760840A (en) | 2020-12-25 | 2020-12-25 | Flat seaming machine vibration and noise reduction device |
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| CN (1) | CN112760840A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009142610A (en) * | 2007-12-18 | 2009-07-02 | Juki Corp | Sewing machine |
| CN101649530A (en) * | 2009-09-18 | 2010-02-17 | 浙江青本缝纫机有限公司 | Transmission mechanism for needle bar of straight-type flat seaming machine |
| CN201495386U (en) * | 2009-08-10 | 2010-06-02 | 浙江宝石缝纫机股份有限公司 | Flat seaming machine needle bar stroke adjustable mechanism |
| CN206553738U (en) * | 2017-03-16 | 2017-10-13 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN206799921U (en) * | 2017-03-16 | 2017-12-26 | 杰克缝纫机股份有限公司 | The drive mechanism and sewing machine of a kind of use in sewing machine |
| JP2018149020A (en) * | 2017-03-10 | 2018-09-27 | ペガサスミシン製造株式会社 | Double chain stitch sewing machine |
-
2020
- 2020-12-25 CN CN202011580016.6A patent/CN112760840A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009142610A (en) * | 2007-12-18 | 2009-07-02 | Juki Corp | Sewing machine |
| CN201495386U (en) * | 2009-08-10 | 2010-06-02 | 浙江宝石缝纫机股份有限公司 | Flat seaming machine needle bar stroke adjustable mechanism |
| CN101649530A (en) * | 2009-09-18 | 2010-02-17 | 浙江青本缝纫机有限公司 | Transmission mechanism for needle bar of straight-type flat seaming machine |
| JP2018149020A (en) * | 2017-03-10 | 2018-09-27 | ペガサスミシン製造株式会社 | Double chain stitch sewing machine |
| CN206553738U (en) * | 2017-03-16 | 2017-10-13 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN206799921U (en) * | 2017-03-16 | 2017-12-26 | 杰克缝纫机股份有限公司 | The drive mechanism and sewing machine of a kind of use in sewing machine |
Non-Patent Citations (1)
| Title |
|---|
| 王文博: "《绷缝机和链缝机使用维修技术》", 31 March 2016 * |
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Application publication date: 20210507 |