CN108642746B - Sewing embroidery machine rotating shuttle containing wear-resistant ceramic parts and preparation method thereof - Google Patents
Sewing embroidery machine rotating shuttle containing wear-resistant ceramic parts and preparation method thereof Download PDFInfo
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- CN108642746B CN108642746B CN201810510463.0A CN201810510463A CN108642746B CN 108642746 B CN108642746 B CN 108642746B CN 201810510463 A CN201810510463 A CN 201810510463A CN 108642746 B CN108642746 B CN 108642746B
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05C—EMBROIDERING; TUFTING
- D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
- D05C11/18—Shuttles ; Shuttle holders; Shuttle driving arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/107—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing organic material comprising solvents, e.g. for slip casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
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Abstract
The invention relates to the field of sewing embroidery machine equipment, and discloses a sewing embroidery machine rotating shuttle containing a wear-resistant ceramic part and a preparation method thereof.
Description
Technical Field
The invention relates to the field of sewing embroidery machine equipment, in particular to a sewing embroidery machine rotating shuttle containing a wear-resistant ceramic part and a preparation method thereof.
Background
The rotating shuttle is a key component of the sewing embroidery machine and is in a rotating friction state when in work. At present, the rotating shuttle on the sewing embroidery machine is made of metal materials, and although the metal materials have good toughness and are easy to process and form, the metal materials also have the following defects:
1. when the embroidery machine is used, specific lubricating oil is added to the rotating shuttle regularly, otherwise, the service life of the product is greatly shortened, and the service life can be ensured only on the basis of the lubricating oil.
2. Under the condition of normal use, the wear resistance of the metal material is relatively poor, and the service life is short.
3. The metal rotating shuttle can generate heat when rotating at a high speed, so that the rotating shuttle can generate heat, and the rotating shuttle rotates at a high speed when the working state is stopped constantly, so that the rotating shuttle is fatigue-damaged and metal defects are thermal fatigue; when the temperature changes, the dimensional stability of the metal is poor.
4. The metal material has poor corrosion resistance, is easy to oxidize at high temperature, has poor corrosion resistance to acid, alkali and salt, greatly influences the service life, and the ceramic has good chemical characteristics, is difficult to oxidize and resist corrosion;
5. the metal material has high thermal conductivity, and the temperature of the metal material tends to be too high at high-speed rotation.
Therefore, there is a need to develop a new rotating shuttle to solve the above technical problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides a rotary shuttle of a sewing embroidery machine containing a wear-resistant ceramic part and a preparation method thereof, wherein the easily-worn part on the rotary shuttle is changed into a ceramic material, so that the rotary shuttle can normally work in an oil-free state, and the ceramic material has good wear resistance, higher hardness, good thermal stability, lower thermal conductivity and strong corrosion resistance, so that the mechanical property of the rotary shuttle is better, the size stability is good, the service life can be prolonged by more than 2 times, meanwhile, the rotary shuttle capable of working without oil can reduce the labor intensity of staff, improve the working efficiency, has no pollution to cloth, and improve the economic benefit.
The specific technical scheme of the invention is as follows:
the first scheme is as follows: a rotary shuttle of sewing embroidery machine containing wear-resistant ceramic parts comprises a shuttle bed, a shuttle frame, a moon ring and a shuttle skin. The shuttle rack is arranged in the shuttle bed, the lower end of the bulge is positioned above the upper end of the guide rail, the moon ring is wrapped outside the shuttle bed, the lower end of the flange is positioned above the upper end of the bulge, and the bobbin leather bag is arranged outside the moon ring; the bulges, the guide rails and the flanges are provided with a plurality of circular holes in the vertical direction, and ceramic cylinders in interference fit with the circular holes are arranged in the circular holes.
The ceramic cylinder is embedded in the part of the rotating shuttle, which is subjected to relative friction among the shuttle frame, the shuttle bed and the moon ring, and has the function that when the three parts are subjected to relative displacement (the shuttle frame is not moved, the shuttle bed and the moon ring rotate during working, and the three parts rotate without interference), the upper end and the lower end of the ceramic cylinder are used as friction surfaces (friction occurs among the bulges, the guide rails and the flanges). The ceramic has good wear resistance, low thermal conductivity and lower linear expansion coefficient than metal, when the temperature changes, the ceramic has good dimensional stability, meanwhile, the ceramic material has good thermal stability (the melting point is mostly more than 2000 ℃), and in addition, the ceramic also has good chemical properties, is not easy to oxidize and resists corrosion; in conclusion, the ceramic material can overcome the technical problems of poor wear resistance, overhigh heat conductivity, poor dimensional stability, non-corrosion resistance and the like of metal materials.
Preferably, the ceramic cylinder is not arranged in the partial round hole, and the ceramic cylinder is used as a heat dissipation hole to improve the heat dissipation performance of the rotating shuttle.
Preferably, the upper and lower ends of the ceramic cylinder are flush with the upper and lower ends of the circular hole.
Preferably, the method for preparing the sewing embroidery machine rotating shuttle containing the wear-resistant ceramic component comprises the following steps:
1) preparing materials: mixing metal powder with high molecular polymer to obtain the metal injection molding raw material.
2) And (3) injection: and heating and uniformly filling the metal injection molding raw materials into a mold cavity by using an injection machine, and cooling to obtain an injection blank with a circular hole shuttle bed, a shuttle frame, a crescent and a shuttle skin.
3) Degreasing: the injection blank is degreased to remove the bulk binder in the injection blank, and the remaining matrix binder is used to maintain the shape.
4) The ceramic cylinder is placed in the circular hole.
5) And (3) sintering: sintering in vacuum furnace or atmosphere furnace, removing skeleton binder, densifying metal to obtain complete metal body, and cooling to obtain sintered part.
6) Machining: the complex shape structure is formed by MIM technology, and the subsequent matching dimension is finished by subsequent numerical control machine processing.
7) Polishing: the appearance of the product is finished by rough polishing and fine polishing.
8) And (6) assembling.
Although ceramic materials have some advantages in properties over metallic materials, ceramic materials also have certain disadvantages, such as the hardness of the ceramic material being too high, when it is brittle and difficult to machine.
In the first scheme, the difficulty in processing is how to perform interference fit between the ceramic cylinder and the circular hole (the diameter of the ceramic cylinder is slightly larger than that of the circular hole). Because of the good dimensional stability of the ceramic, if a hard plugging method is adopted, the ceramic body is easy to crack. Therefore, after long-term research, the team of the invention decides to put the ceramic cylinder into the round holes of the shuttle bed, the shuttle frame and the moon ring before sintering, then sintering, and purposefully blending the formula of the metal injection molding raw materials to ensure that the size of the ceramic cylinder can be scaled down according to the proportion of 0.75-0.9 after sintering, so that the ceramic cylinder can be tightly wrapped after the size of the round hole is reduced, and interference fit is realized. And before sintering, the ceramic cylinder is placed into the round hole, and clearance fit is performed at the moment, so that the ceramic cylinder cannot be damaged.
Preferably, the formula of the metal injection molding raw material comprises the following raw materials: 75-85wt% of iron powder, 3.5-4wt% of polyethylene, 3.5-4wt% of paraffin, 3-3.5 wt% of ABS, 0.8-1 wt% of antioxidant, 3.2-3.5 wt% of EVA, 2.5-3 wt% of palm wax and 2-2.5 wt% of stearic acid.
The present group has found that by strictly limiting the formulation to the above range, a scale of 0.75-0.9 can be achieved.
Schemes two to four: a sewing embroidery machine rotating shuttle containing wear-resistant ceramic components comprises a shuttle bed, a shuttle frame, a moon ring and a shuttle skin; the shuttle rack is arranged in the shuttle bed, the lower end of the ceramic convex ring is positioned above the upper end of the ceramic guide rail, the moon ring bag is arranged outside the shuttle bed, the lower end of the ceramic convex ring is positioned above the upper end of the ceramic convex ring, and the shuttle leather bag is arranged outside the moon ring.
Scheme II: the ceramic convex ring, the ceramic guide rail and the ceramic flange are fixed on the shuttle frame, the shuttle bed and the lunar ring respectively in a welding mode.
The preparation method of the rotating shuttle of the sewing embroidery machine in the second scheme comprises the following steps:
1) preparing materials: mixing metal powder with high molecular polymer to obtain the metal injection molding raw material.
2) And (3) injection: and heating the metal injection molding raw materials by using an injection machine, uniformly filling the metal injection molding raw materials into a mold cavity, and cooling to obtain injection blanks of the shuttle bed, the shuttle frame, the moon ring and the shuttle skin.
3) Degreasing: the injection blank is degreased to remove the bulk binder in the injection blank, and the remaining matrix binder is used to maintain the shape.
4) And (3) sintering: sintering at 1200-1300 ℃ in a vacuum furnace or an atmosphere furnace, removing the skeleton binder, compacting the metal into a complete metal body, and cooling to obtain a sintered part.
5) And (6) machining.
6) And (6) polishing.
7) Assembling: and respectively welding the ceramic convex ring, the ceramic guide rail and the ceramic flange on the shuttle frame, the shuttle bed and the lunar ring by using a third medium to finally form a finished product.
Wherein. The welding mode can adopt brazing, laser welding or fusion welding. The brazing medium is Ag-Cu-Ti or Ag-Cu-Ti-Mo; the heat source for fusion welding is an arc, a laser beam or an electron beam.
The third scheme is as follows: the groove of the shuttle frame, the top of the inner circumferential surface of the shuttle bed and the top of the inner circumferential surface of the moon ring are respectively provided with a threaded hole, and the ceramic convex ring, the ceramic guide rail and the ceramic flange are respectively fixed on the shuttle frame, the shuttle bed and the moon ring through a stud arranged in the threaded hole.
Preferably, the ceramic guide rail is divided into an upper layer and a lower layer.
The preparation method of the rotating shuttle of the sewing embroidery machine in the third scheme comprises the following steps:
1) preparing materials: mixing metal powder or ceramic powder with high molecular polymer to obtain metal injection molding material and ceramic injection molding material.
2) And (3) injection: and heating the metal injection molding raw materials by using an injection machine, uniformly filling the metal injection molding raw materials into a mold cavity, and cooling to obtain injection blanks of the shuttle bed, the shuttle frame, the moon ring and the shuttle skin.
Heating the ceramic injection molding raw material by using an injection machine and uniformly filling the raw material into a mold cavity, wherein the mold cavity is internally provided with a stud, cooling to obtain an injection blank with a ceramic convex ring, a ceramic guide rail and a ceramic flange of the stud, and rotating the stud to obtain the injection blank with a threaded hole.
3) Degreasing: the injection blank is degreased to remove the bulk binder in the injection blank, and the remaining matrix binder is used to maintain the shape.
4) And (3) sintering: sintering in vacuum furnace or atmosphere furnace to remove skeleton binder, densifying metal or ceramic into integral metal body or ceramic body, and cooling to obtain sintered part.
5) And (6) machining.
6) And (6) polishing.
7) Assembling: and fixing the ceramic convex ring, the ceramic guide rail and the ceramic flange on the shuttle frame, the shuttle bed and the lunar ring through studs respectively to form a finished product finally.
The third difficulty lies in that the threaded hole is processed on the ceramic, and the ceramic has high hardness and is fragile, so the third difficulty cannot be realized according to the prior art. Therefore, after long-term research, the team of the invention decides to process the threaded hole in the mold, places the stud in the mold in an embedding manner, performs injection molding, takes out the product together with the stud after molding, rotates the stud out of the product after taking out, and simultaneously places the spare stud in the mold for injection molding, so that the production efficiency can be greatly improved, and screws out the stud of the previous product when the next product is injected, thereby solving the problem that the ceramic cannot process the threaded hole.
And the scheme is as follows: the shuttle race, the shuttle frame and the moon ring are made of ceramic materials, and the ceramic convex ring, the ceramic guide rail and the ceramic flange are respectively and integrally formed with the shuttle race, the shuttle frame and the moon ring; the periphery of the shuttle race is provided with a metal taper thread sleeve, and the moon ring is wrapped outside the shuttle race through a fixing screw arranged in the metal taper thread sleeve.
The preparation method of the sewing embroidery machine rotating shuttle of the fourth scheme comprises the following steps:
1) the shuttle race with the ceramic convex ring, the shuttle frame with the ceramic guide rail and the moon ring with the ceramic flange are respectively made of ceramic materials, wherein the peripheral side of the shuttle race is provided with a taper hole.
2) And embedding the metal taper thread sleeve on the taper hole.
3) And (6) machining.
4) And (5) grinding.
5) Assembling: and (4) wrapping the moon ring outside the shuttle race through a fixing screw, and then completing the assembly of the rest parts.
6) Grinding: grinding media are added around the surface of the ceramic guide rail for grinding.
7) Finally, cleaning and applying anti-rust oil.
Similar to the third scheme, the fourth scheme has the difficulty that the taper threaded hole cannot be directly machined in the ceramic by means of the existing technology. After long-term research, the team of the invention decides to process a taper hole without threads on the shuttle race, then inlays a metal taper thread sleeve in the taper hole, and finally realizes the combination of the shuttle race and the lunar ring through a fixing screw.
And a fifth scheme: a rotary shuttle of sewing embroidery machine containing wear-resistant ceramic parts comprises a shuttle bed, a shuttle frame, a moon ring and a shuttle skin. A circle of groove is formed in the peripheral surface of the shuttle frame, a ceramic convex ring is fixed on the groove, a taper groove is formed in the side wall of the shuttle race, a taper ceramic guide rail is embedded in the taper groove, and a threaded hole is formed in the side wall of the shuttle race; the moon ring is made of ceramic, a circle of ceramic flange is arranged at the top of the inner circumferential surface of the moon ring, the moon ring and the shuttle shell are wrapped outside the shuttle race through a stud and tightly press the tapered ceramic guide rail in the tapered groove; the shuttle frame is arranged in the shuttle bed, the lower end of the ceramic convex ring is positioned above the upper end of the tapered ceramic guide rail, and the upper end of the ceramic convex ring is positioned below the lower end of the ceramic flange.
The preparation method of the rotating shuttle of the sewing embroidery machine in the fifth scheme comprises the following steps:
1) preparing materials: mixing metal powder with high molecular polymer to obtain the metal injection molding raw material.
2) And (3) injection: and heating the metal injection molding raw materials by using an injection machine, uniformly filling the metal injection molding raw materials into a mold cavity, and cooling to obtain an injection blank of the shuttle bed, the shuttle frame and the shuttle skin.
3) Degreasing: the injection blank is degreased to remove the bulk binder in the injection blank, and the remaining matrix binder is used to maintain the shape.
4) And (3) sintering: sintering in vacuum furnace or atmosphere furnace, removing skeleton binder, densifying metal to obtain complete metal body, and cooling to obtain sintered part.
5) And (6) machining.
6) And (6) polishing.
7) Assembling: the ceramic convex ring is fixed on the shuttle frame, the tapered ceramic guide rail is embedded in the tapered groove, the shuttle frame is placed in the shuttle race, and the moon ring and the shuttle skin made of ceramic materials are fixed on the side wall of the shuttle race.
Scheme six: a rotating shuttle of a sewing embroidery machine comprises a shuttle bed, a shuttle frame, a moon ring and a shuttle skin. The shuttle race comprises a shuttle race base and a ceramic guide rail, wherein a threaded hole is formed in the top of the shuttle race base, a fixed seat is arranged at the bottom of the ceramic guide rail, and the ceramic guide rail is fixed to the top of the shuttle race base through a stud; the moon ring is made of ceramic materials, a circle of ceramic flange is arranged at the top of the inner circumferential surface of the moon ring, and the moon ring and the shuttle race are wrapped outside the shuttle race through the studs; the shuttle frame is arranged in the shuttle bed, the lower end of the ceramic convex ring is positioned above the upper end of the ceramic guide rail, and the upper end of the ceramic convex ring is positioned below the lower end of the ceramic flange.
The preparation method of the rotary shuttle of the sewing embroidery machine in the sixth scheme comprises the following steps:
1) preparing materials: mixing metal powder or ceramic powder with high molecular polymer to obtain metal injection molding material and ceramic injection molding material.
2) And (3) injection: and heating the metal injection molding raw material by using an injection machine, uniformly filling the metal injection molding raw material into a mold cavity, and cooling to obtain an injection blank of the shuttle bed base, the shuttle frame and the shuttle skin.
Heating and uniformly filling the ceramic injection molding raw material into a mold cavity by using an injection machine, wherein a stud is arranged in the mold cavity of the ceramic guide rail, cooling to obtain a ceramic guide rail with the stud and an injection blank of a ceramic convex ring and a moon ring, and rotating out the stud to form a threaded hole on the injection blank of the ceramic guide rail.
3) Degreasing: the injection blank is degreased to remove the bulk binder in the injection blank, and the remaining matrix binder is used to maintain the shape.
4) And (3) sintering: sintering in vacuum furnace or atmosphere furnace to remove skeleton binder, densifying metal or ceramic into integral metal body or ceramic body, and cooling to obtain sintered part.
5) And (6) machining.
6) And (6) polishing.
7) Assembling: the method comprises the steps of fixing a ceramic convex ring on a shuttle frame, fixing a ceramic guide rail on a shuttle race base through a stud, placing the shuttle frame in the shuttle race, and fixing a moon ring and a shuttle skin made of ceramic on the side wall of the shuttle race.
Compared with the prior art, the invention has the beneficial effects that:
the invention changes the easy-wearing parts on the rotating shuttle into ceramic materials, so that the rotating shuttle can normally work in an oil-free state, and the ceramic materials have good wear resistance, higher hardness, good thermal stability, lower thermal conductivity and strong anti-corrosion capability, so that the mechanical property of the rotating shuttle is better, the dimensional stability is good, the service life can be prolonged by more than 2 times, meanwhile, the rotating shuttle capable of working without oil can reduce the labor intensity of staff, improve the working efficiency, has no pollution to cloth, and improve the economic benefit.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural diagram of the present invention;
FIG. 3 is a schematic structural diagram of the present invention;
FIG. 4 is a schematic structural diagram of the present invention;
FIG. 5 is a schematic structural view of the present invention;
FIG. 6 is a schematic structural view of the present invention;
FIG. 7 is a schematic structural view of the present invention;
FIG. 8 is a schematic structural view of the present invention;
FIG. 9 is a schematic structural view of the present invention;
FIG. 10 is a schematic structural view of the present invention;
FIG. 11 is a schematic structural view of the present invention;
FIG. 12 is a schematic structural view of the present invention;
FIG. 13 is a schematic structural view of the present invention;
FIG. 14 is a schematic structural view of the present invention;
FIG. 15 is a schematic structural view of the present invention;
FIG. 16 is a schematic diagram of an embodiment of the present invention.
The reference signs are: the shuttle race comprises a shuttle race 1, a shuttle frame 2, a moon ring 3, a shuttle race 4, a protrusion 5, a guide rail 6, a flange 7, a round hole 8, a ceramic cylinder 9, a groove 10, a ceramic convex ring 11, a ceramic guide rail 12, a ceramic flange 13, a threaded hole 14, a stud 15, a metal taper thread bush 21, a fixing screw 16, a taper groove 17, a taper ceramic guide rail 18, a shuttle race base 19 and a fixing seat 20.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
As shown in fig. 1 and 2, a rotary shuttle of a sewing and embroidering machine containing a wear-resistant ceramic component comprises a shuttle bed 1, a shuttle frame 2, a moon ring 3 and a bobbin case 4. The shuttle rack is characterized in that a circle of protrusions 5 are arranged on the outer peripheral surface of the shuttle rack, a circle of guide rails 6 are arranged on the inner peripheral surface of the shuttle race, a circle of flanges 7 are arranged on the top of the inner peripheral surface of the moon ring, the shuttle rack is arranged in the shuttle race, the lower ends of the protrusions are located above the upper ends of the guide rails, the moon ring is wrapped on the outer side of the shuttle race, the lower ends of the flanges are located above the upper ends of the protrusions, and.
As shown in fig. 3-5, a plurality of vertical round holes 8 are arranged on the protrusions, the guide rails and the flanges, ceramic cylinders 9 (a plurality of round holes can be left as required to facilitate heat dissipation) which are in interference fit with the round holes are arranged in the round holes, and the upper and lower ends of the ceramic cylinders are flush with the round holes.
The preparation method of the sewing embroidery machine rotating shuttle containing the wear-resistant ceramic component comprises the following steps:
1) preparing materials: mixing metal powder and high molecular polymer, wherein the formula is as follows: 80wt% of iron powder, 3.75wt% of polyethylene, 3.75wt% of paraffin, 3.25wt% of ABS, 0.9wt% of antioxidant, 3.35wt% of EVA, 2.75wt% of palm wax and 2.25wt% of stearic acid. Preparing the metal injection molding raw material. The shrinkage rate of the circular hole after sintering is about 0.8.
2) And (3) injection: and heating and uniformly filling the metal injection molding raw materials into a mold cavity by using an injection machine, and cooling to obtain an injection blank with a circular hole shuttle bed, a shuttle frame, a crescent and a shuttle skin.
3) Degreasing: the injection blank is degreased to remove the bulk binder in the injection blank, and the remaining matrix binder is used to maintain the shape.
4) The ceramic cylinder is placed in the circular hole.
5) And (3) sintering: sintering in a vacuum furnace at 1250 ℃, removing the skeleton binder, compacting the metal into a complete metal body, and cooling to obtain a sintered part. The shrinkage rate of the circular hole after sintering is about 0.8.
6) And (6) machining.
7) And (6) polishing.
8) And (6) assembling.
Example 2
The present embodiment is different from embodiment 1 in that:
1. in this example, the formulation of the metal injection molding raw material is 78.5wt% of iron powder, 4wt% of polyethylene, 4wt% of paraffin, 3.5wt% of ABS, 1 wt% of antioxidant, 3.5wt% of EVA, 3 wt% of palm wax, and 2.5 wt% of stearic acid.
2. The sintering temperature is about 1200 ℃, and the shrinkage rate of the circular hole after sintering is about 0.75.
Example 3
The present embodiment is different from embodiment 1 in that:
1. the formula of the metal injection molding raw material in this embodiment is as follows: 81.5wt% of iron powder, 3.5wt% of polyethylene, 3.5wt% of paraffin, 3 wt% of ABS, 0.8 wt% of antioxidant, 3.2wt% of EVA, 2.5 wt% of palm wax and 2wt% of stearic acid.
2. The sintering temperature is about 1300 ℃, and the shrinkage rate of the circular hole after sintering is about 0.9.
Example 4
A rotary shuttle of sewing embroidery machine containing wear-resistant ceramic parts comprises a shuttle bed, a shuttle frame, a moon ring and a shuttle skin.
As shown in fig. 8 and 9, a circle of groove 10 is formed on the outer peripheral surface of the shuttle frame, and a ceramic convex ring 11 is fixed on the groove. As shown in fig. 6 and 7, a circle of ceramic guide rail 12 is fixed on the top of the inner circumferential surface of the shuttle race. As shown in fig. 10 and 11, a circle of ceramic flange 13 is fixed on the top of the inner circumferential surface of the moon ring, the shuttle is erected in the shuttle race, the lower end of the ceramic convex ring is positioned above the upper end of the ceramic guide rail, the moon ring is wrapped outside the shuttle race, the lower end of the ceramic flange is positioned above the upper end of the ceramic convex ring, and the shuttle leather is wrapped outside the moon ring.
The ceramic convex ring, the ceramic guide rail and the ceramic flange are fixed on the shuttle frame, the shuttle bed and the lunar ring respectively in a welding mode.
The preparation method of the sewing embroidery machine rotating shuttle containing the wear-resistant ceramic component comprises the following steps:
1) preparing materials: mixing metal powder with high molecular polymer to obtain the metal injection molding raw material.
2) And (3) injection: and heating the metal injection molding raw materials by using an injection machine, uniformly filling the metal injection molding raw materials into a mold cavity, and cooling to obtain injection blanks of the shuttle bed, the shuttle frame and the moon ring.
3) Degreasing: the injection blank is degreased to remove the bulk binder in the injection blank, and the remaining matrix binder is used to maintain the shape.
4) And (3) sintering: sintering in an atmosphere furnace, removing the skeleton binder, densifying the metal into a complete metal body, and cooling to obtain a sintered part.
5) And (6) machining.
6) And (6) polishing.
7) Assembling: and respectively welding the ceramic convex ring, the ceramic guide rail and the ceramic flange on the shuttle frame, the shuttle bed and the lunar ring by brazing (the medium is Ag-Cu-Ti or Ag-Cu-Ti-M), and finally forming a finished product.
Example 5
A rotary shuttle of sewing embroidery machine containing wear-resistant ceramic parts comprises a shuttle bed, a shuttle frame, a moon ring and a shuttle skin. The shuttle is characterized in that a circle of groove 10 is formed in the outer peripheral surface of the shuttle frame, a ceramic convex ring 11 is fixed on the groove, a circle of ceramic guide rail 12 is fixed on the top of the inner peripheral surface of the shuttle bed, a circle of ceramic flange 13 is fixed on the top of the inner peripheral surface of the moon ring, the shuttle frame is arranged in the shuttle bed, the lower end of the ceramic convex ring is located above the upper end of the ceramic guide rail, the moon ring bag is arranged on the outer side of the shuttle bed, the lower end of the ceramic flange is located above the upper end of the ceramic convex ring, and.
As shown in fig. 12 and 13 (taking the shuttle frame as an example), the groove of the shuttle frame, the top of the inner circumferential surface of the shuttle race, and the top of the inner circumferential surface of the lunar ring are respectively provided with a threaded hole 14, and the ceramic convex ring, the ceramic guide rail, and the ceramic flange are respectively fixed on the shuttle frame, the shuttle race, and the lunar ring through a stud 21 arranged in the threaded hole.
The preparation method of the sewing embroidery machine rotating shuttle containing the wear-resistant ceramic component is characterized by comprising the following steps:
1) preparing materials: mixing metal powder or ceramic powder with a high molecular polymer to respectively obtain a metal injection molding raw material and a ceramic injection molding raw material;
2) and (3) injection: heating and uniformly filling the metal injection molding raw materials into a mold cavity by using an injection machine, and cooling to obtain injection blanks of the shuttle bed, the shuttle frame, the moon ring and the shuttle skin;
heating and uniformly filling a ceramic injection molding raw material into a mold cavity by using an injection machine, wherein the mold cavity is internally provided with a stud, cooling to obtain an injection blank with a ceramic convex ring, a ceramic guide rail and a ceramic flange of the stud, and rotating the stud to obtain the injection blank with a threaded hole;
3) degreasing: degreasing the injection blank to remove a main body binder in the injection blank, wherein the residual skeleton binder is used for maintaining the shape;
4) and (3) sintering: sintering in a vacuum furnace or an atmosphere furnace, removing the skeleton binder, compacting the metal or ceramic into a complete metal body or ceramic body, and cooling to obtain a sintered part;
5) machining;
6) polishing;
7) assembling: and fixing the ceramic convex ring, the ceramic guide rail and the ceramic flange on the shuttle frame, the shuttle bed and the lunar ring through studs respectively to form a finished product finally.
Example 6
A rotary shuttle of sewing embroidery machine containing wear-resistant ceramic parts comprises a shuttle bed, a shuttle frame, a moon ring and a shuttle skin. The shuttle is erected in the shuttle bed, the lower end of the ceramic convex ring is located above the upper end of the ceramic guide rail, the moon ring bag is arranged on the outer side of the shuttle bed, the lower end of the ceramic convex ring is located above the upper end of the ceramic convex ring, and the shuttle leather bag is arranged on the outer side of the moon ring.
The shuttle race, the shuttle frame and the moon ring are made of ceramic materials, and the ceramic convex ring, the ceramic guide rail and the ceramic flange are respectively and integrally formed with the shuttle race, the shuttle frame and the moon ring; as shown in fig. 14, a metal tapered thread bush 21 is provided on the circumferential side surface of the shuttle race, and the moon ring is wrapped outside the shuttle race by a fixing screw 16 provided in the metal tapered thread bush.
The preparation method of the sewing embroidery machine rotating shuttle containing the wear-resistant ceramic component comprises the following steps:
1) the shuttle race with the ceramic convex ring, the shuttle frame with the ceramic guide rail and the moon ring with the ceramic flange are respectively made of ceramic materials, wherein the peripheral side of the shuttle race is provided with a taper hole.
2) And embedding the metal taper thread sleeve on the taper hole.
3) And (6) machining.
4) And (5) grinding.
5) Assembling: and (4) wrapping the moon ring outside the shuttle race through a fixing screw, and then completing the assembly of the rest parts.
6) Grinding: grinding media are added around the surface of the ceramic guide rail for grinding.
7) Finally, cleaning and applying anti-rust oil.
Example 7
A sewing embroidery machine rotating shuttle containing wear-resistant ceramic components comprises a shuttle bed 1, a shuttle frame 2, a moon ring 3 and a shuttle skin 4. The outer peripheral surface of the shuttle frame is provided with a circle of groove 10, and a ceramic convex ring 11 is fixed on the groove. As shown in fig. 15, a taper groove 17 is formed in the side wall of the shuttle race, a taper ceramic guide rail 18 is embedded in the taper groove, and a threaded hole 14 is formed in the side wall of the shuttle race; the moon ring is made of ceramic, a circle of ceramic flange 13 is arranged at the top of the inner circumferential surface of the moon ring, the moon ring and the shuttle shell are wrapped outside the shuttle race through the stud and tightly press the tapered ceramic guide rail in the tapered groove; the shuttle frame is arranged in the shuttle bed, the lower end of the ceramic convex ring is positioned above the upper end of the tapered ceramic guide rail, and the upper end of the ceramic convex ring is positioned below the lower end of the ceramic flange.
The preparation method of the rotating shuttle of the sewing embroidery machine comprises the following steps:
1) preparing materials: mixing metal powder with high molecular polymer to obtain the metal injection molding raw material.
2) And (3) injection: and heating the metal injection molding raw materials by using an injection machine, uniformly filling the metal injection molding raw materials into a mold cavity, and cooling to obtain an injection blank of the shuttle bed, the shuttle frame and the shuttle skin.
3) Degreasing: the injection blank is degreased to remove the bulk binder in the injection blank, and the remaining matrix binder is used to maintain the shape.
4) And (3) sintering: sintering in vacuum furnace or atmosphere furnace, removing skeleton binder, densifying metal to obtain complete metal body, and cooling to obtain sintered part.
5) And (6) machining.
6) And (6) polishing.
7) Assembling: the ceramic convex ring is fixed on the shuttle frame, the tapered ceramic guide rail is embedded in the tapered groove, the shuttle frame is placed in the shuttle race, and the moon ring and the shuttle skin made of ceramic materials are fixed on the side wall of the shuttle race.
Example 8
A sewing embroidery machine rotating shuttle containing wear-resistant ceramic components comprises a shuttle bed 1, a shuttle frame 2, a moon ring 3 and a shuttle skin 4. The outer peripheral surface of the shuttle frame is provided with a circle of groove 10, and a ceramic convex ring 11 is fixed on the groove. As shown in fig. 16, the shuttle race comprises a shuttle race base 19 and a ceramic guide rail 12, a threaded hole 14 is formed in the top of the shuttle race base, a fixed seat 20 is formed in the bottom of the ceramic guide rail, and the ceramic guide rail is fixed to the top of the shuttle race base through a stud; the moon ring is made of ceramic materials, a circle of ceramic flange 13 is arranged at the top of the inner circumferential surface of the moon ring, and the moon ring and the shuttle race are wrapped outside the shuttle race through the studs; the shuttle frame is arranged in the shuttle bed, the lower end of the ceramic convex ring is positioned above the upper end of the ceramic guide rail, and the upper end of the ceramic convex ring is positioned below the lower end of the ceramic flange.
The preparation method of the rotating shuttle of the sewing embroidery machine comprises the following steps:
1) preparing materials: mixing metal powder or ceramic powder with high molecular polymer to obtain metal injection molding material and ceramic injection molding material.
2) And (3) injection: and heating the metal injection molding raw material by using an injection machine, uniformly filling the metal injection molding raw material into a mold cavity, and cooling to obtain an injection blank of the shuttle bed base, the shuttle frame and the shuttle skin.
Heating and uniformly filling the ceramic injection molding raw material into a mold cavity by using an injection machine, wherein a stud is arranged in the mold cavity of the ceramic guide rail, cooling to obtain a ceramic guide rail with the stud and an injection blank of a ceramic convex ring and a moon ring, and rotating out the stud to form a threaded hole on the injection blank of the ceramic guide rail.
3) Degreasing: the injection blank is degreased to remove the bulk binder in the injection blank, and the remaining matrix binder is used to maintain the shape.
4) And (3) sintering: sintering in vacuum furnace or atmosphere furnace to remove skeleton binder, densifying metal or ceramic into integral metal body or ceramic body, and cooling to obtain sintered part.
5) And (6) machining.
6) And (6) polishing.
7) Assembling: fixing the ceramic convex ring on the shuttle frame (referring to the method of the second scheme or the third scheme), fixing the ceramic guide rail on the shuttle race base through the stud, placing the shuttle frame in the shuttle race, and fixing the moon-shaped ring and the shuttle race made of ceramic on the side wall of the shuttle race.
The raw materials and equipment used in the invention are common raw materials and equipment in the field if not specified; the methods used in the present invention are conventional in the art unless otherwise specified.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (8)
1. A sewing embroidery machine rotating shuttle containing wear-resistant ceramic components comprises a shuttle bed (1), a shuttle frame (2), a moon ring (3) and a shuttle skin (4); the method is characterized in that: a circle of bulges (5) are arranged on the outer peripheral surface of the shuttle frame, a circle of guide rails (6) are arranged on the inner peripheral surface of the shuttle bed, a circle of flanges (7) are arranged at the top of the inner peripheral surface of the moon ring, the shuttle frame is arranged in the shuttle bed, the lower ends of the bulges are positioned above the upper ends of the guide rails, the moon ring bag is arranged on the outer side of the shuttle bed, the lower ends of the flanges are positioned above the upper ends of the bulges, and the bobbin bag is; the bulges, the guide rails and the flanges are provided with a plurality of circular holes (8) in the vertical direction, and ceramic cylinders (9) in interference fit with the circular holes are arranged in the circular holes.
2. A method for preparing a sewing embroidery machine rotary shuttle containing a wear-resistant ceramic member as claimed in claim 1, characterized by comprising the steps of:
1) preparing materials: mixing metal powder and high molecular polymer to obtain a metal injection molding raw material;
2) and (3) injection: heating and uniformly filling the metal injection molding raw material into a mold cavity by using an injection machine, and cooling to obtain an injection blank with a circular hole shuttle bed, a shuttle frame, a moon ring and a shuttle skin;
3) degreasing: degreasing the injection blank to remove a main body binder in the injection blank, wherein the residual skeleton binder is used for maintaining the shape;
4) placing the ceramic cylinder into the circular hole;
5) and (3) sintering: sintering at 1200-1300 ℃ in a vacuum furnace or an atmosphere furnace, removing the skeleton binder, compacting the metal into a complete metal body, and cooling to obtain a sintered part;
6) machining;
7) polishing;
8) and (6) assembling.
3. The method for manufacturing a sewing embroidery machine rotary shuttle containing a wear-resistant ceramic member as claimed in claim 2, characterized in that: the formula of the metal injection molding raw material comprises the following raw materials: 75-85wt% of iron powder, 3.5-4wt% of polyethylene, 3.5-4wt% of paraffin, 3-3.5 wt% of ABS, 0.8-1 wt% of antioxidant, 3.2-3.5 wt% of EVA, 2.5-3 wt% of palm wax and 2-2.5 wt% of stearic acid.
4. A sewing embroidery machine rotating shuttle containing wear-resistant ceramic components comprises a shuttle bed, a shuttle frame, a moon ring and a shuttle skin; the method is characterized in that: a circle of grooves (10) are formed in the outer peripheral surface of the shuttle frame, a ceramic convex ring (11) is fixed on each groove, a circle of ceramic guide rails (12) is fixed at the top of the inner peripheral surface of the shuttle bed, a circle of ceramic flange (13) is fixed at the top of the inner peripheral surface of the moon ring, the shuttle frame is arranged in the shuttle bed, the lower end of the ceramic convex ring is positioned above the upper end of each ceramic guide rail, the moon ring bag is arranged on the outer side of the shuttle bed, the lower end of the ceramic flange is positioned above the upper end of the ceramic convex ring, and the shuttle leather;
the shuttle race, the shuttle frame and the moon ring are made of ceramic materials, and the ceramic convex ring, the ceramic guide rail and the ceramic flange are respectively and integrally formed with the shuttle race, the shuttle frame and the moon ring; the periphery of the shuttle race is provided with a metal taper thread sleeve (21), and the moon ring is wrapped outside the shuttle race through a fixing screw (16) arranged in the metal taper thread sleeve.
5. A method for preparing a sewing embroidery machine rotary shuttle containing a wear-resistant ceramic component as claimed in claim 4, characterized by comprising the steps of:
1) respectively manufacturing a shuttle race with a ceramic convex ring, a shuttle frame with a ceramic guide rail and a moon ring with a ceramic flange by using ceramic materials, wherein tapered holes are arranged on the peripheral side of the shuttle race;
2) embedding the metal taper thread sleeve on the taper hole;
3) machining;
4) grinding;
5) assembling: the moon ring is wrapped outside the shuttle bed through the fixing screws, and then the assembly of the rest parts is completed;
6) grinding: grinding media are added around the surface of the ceramic guide rail for grinding;
7) finally, cleaning and applying anti-rust oil.
6. A method for preparing a rotary shuttle of a sewing embroidery machine containing wear-resistant ceramic parts is characterized in that,
the rotating shuttle of the sewing embroidery machine comprises a shuttle bed, a shuttle frame, a moon ring and a shuttle skin; a circle of grooves (10) are formed in the outer peripheral surface of the shuttle frame, a ceramic convex ring (11) is fixed on each groove, a circle of ceramic guide rails (12) is fixed at the top of the inner peripheral surface of the shuttle bed, a circle of ceramic flange (13) is fixed at the top of the inner peripheral surface of the moon ring, the shuttle frame is arranged in the shuttle bed, the lower end of the ceramic convex ring is positioned above the upper end of each ceramic guide rail, the moon ring bag is arranged on the outer side of the shuttle bed, the lower end of the ceramic flange is positioned above the upper end of the ceramic convex ring, and the shuttle leather;
threaded holes (14) are respectively formed in the groove of the shuttle frame, the top of the inner circumferential surface of the shuttle bed and the top of the inner circumferential surface of the moon ring, and the ceramic convex ring, the ceramic guide rail and the ceramic flange are respectively fixed on the shuttle frame, the shuttle bed and the moon ring through studs (15) arranged in the threaded holes;
the preparation method comprises the following steps:
1) preparing materials: mixing metal powder or ceramic powder with a high molecular polymer to respectively obtain a metal injection molding raw material and a ceramic injection molding raw material;
2) and (3) injection: heating and uniformly filling the metal injection molding raw materials into a mold cavity by using an injection machine, and cooling to obtain injection blanks of the shuttle bed, the shuttle frame, the moon ring and the shuttle skin;
heating and uniformly filling a ceramic injection molding raw material into a mold cavity by using an injection machine, wherein the mold cavity is internally provided with a stud, cooling to obtain an injection blank with a ceramic convex ring, a ceramic guide rail and a ceramic flange of the stud, and rotating the stud to obtain the injection blank with a threaded hole;
3) degreasing: degreasing the injection blank to remove a main body binder in the injection blank, wherein the residual skeleton binder is used for maintaining the shape;
4) and (3) sintering: sintering in a vacuum furnace or an atmosphere furnace, removing the skeleton binder, compacting the metal or ceramic into a complete metal body or ceramic body, and cooling to obtain a sintered part;
5) machining;
6) polishing;
7) assembling: and fixing the ceramic convex ring, the ceramic guide rail and the ceramic flange on the shuttle frame, the shuttle bed and the lunar ring through studs respectively to form a finished product finally.
7. A preparation method of a sewing embroidery machine rotating shuttle containing a wear-resistant ceramic component comprises a shuttle bed, a shuttle frame, a moon ring and a shuttle shell; the method is characterized in that: a circle of groove (10) is formed in the outer peripheral surface of the shuttle frame, a ceramic convex ring (11) is fixed on the groove, a taper groove (17) is formed in the side wall of the shuttle race, a taper ceramic guide rail (18) is embedded in the taper groove, and a threaded hole (14) is formed in the side wall of the shuttle race; the moon ring is made of ceramic, a circle of ceramic flange (13) is arranged at the top of the inner circumferential surface of the moon ring, the moon ring and the shuttle shell are wrapped outside the shuttle race through the studs and tightly press the tapered ceramic guide rail in the tapered groove; the shuttle frame is arranged in the shuttle bed, the lower end of the ceramic convex ring is positioned above the upper end of the tapered ceramic guide rail, and the upper end of the ceramic convex ring is positioned below the lower end of the ceramic flange;
the preparation method of the rotating shuttle of the sewing embroidery machine comprises the following steps:
1) preparing materials: mixing metal powder and high molecular polymer to obtain a metal injection molding raw material;
2) and (3) injection: heating and uniformly filling the metal injection molding raw materials into a mold cavity by using an injection machine, and cooling to obtain injection blanks of the shuttle bed, the shuttle frame and the shuttle skin;
3) degreasing: degreasing the injection blank to remove a main body binder in the injection blank, wherein the residual skeleton binder is used for maintaining the shape;
4) and (3) sintering: sintering in a vacuum furnace or an atmosphere furnace, removing the skeleton binder, compacting the metal into a complete metal body, and cooling to obtain a sintered part;
5) machining;
6) polishing;
7) assembling: the ceramic convex ring is fixed on the shuttle frame, the tapered ceramic guide rail is embedded in the tapered groove, the shuttle frame is placed in the shuttle race, and the moon ring and the shuttle skin made of ceramic materials are fixed on the side wall of the shuttle race.
8. A preparation method of a sewing embroidery machine rotating shuttle containing a wear-resistant ceramic component comprises a shuttle bed, a shuttle frame, a moon ring and a shuttle shell; the method is characterized in that: a circle of grooves (10) are formed in the outer peripheral surface of the shuttle frame, ceramic convex rings (11) are fixed on the grooves, the shuttle race comprises a shuttle race base (19) and ceramic guide rails (12), threaded holes (14) are formed in the top of the shuttle race base, fixing seats (20) are arranged at the bottom of the ceramic guide rails, and the ceramic guide rails are fixed to the top of the shuttle race base through studs; the moon ring is made of ceramic materials, a circle of ceramic flange (13) is arranged at the top of the inner circumferential surface of the moon ring, and the moon ring and the shuttle race are wrapped outside the shuttle race through the studs; the shuttle frame is arranged in the shuttle bed, the lower end of the ceramic convex ring is positioned above the upper end of the ceramic guide rail, and the upper end of the ceramic convex ring is positioned below the lower end of the ceramic flange;
the preparation method of the rotating shuttle of the sewing embroidery machine comprises the following steps:
1) preparing materials: mixing metal powder or ceramic powder with a high molecular polymer to respectively obtain a metal injection molding raw material and a ceramic injection molding raw material;
2) and (3) injection: heating and uniformly filling the metal injection molding raw materials into a mold cavity by using an injection machine, and cooling to obtain injection blanks of the shuttle bed base, the shuttle frame and the shuttle skin;
heating and uniformly filling a ceramic injection molding raw material into a mold cavity by using an injection machine, wherein a stud is arranged in the mold cavity of the ceramic guide rail, cooling to obtain a ceramic guide rail with the stud and an injection blank of a ceramic convex ring and a moon ring, and rotating the stud to obtain the injection blank of the ceramic guide rail with a threaded hole;
3) degreasing: degreasing the injection blank to remove a main body binder in the injection blank, wherein the residual skeleton binder is used for maintaining the shape;
4) and (3) sintering: sintering in a vacuum furnace or an atmosphere furnace, removing the skeleton binder, compacting the metal or ceramic into a complete metal body or ceramic body, and cooling to obtain a sintered part;
5) machining;
6) polishing;
7) assembling: the method comprises the steps of fixing a ceramic convex ring on a shuttle frame, fixing a ceramic guide rail on a shuttle race base through a stud, placing the shuttle frame in the shuttle race, and fixing a moon ring and a shuttle skin made of ceramic on the side wall of the shuttle race.
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| CN201810510463.0A CN108642746B (en) | 2018-05-24 | 2018-05-24 | Sewing embroidery machine rotating shuttle containing wear-resistant ceramic parts and preparation method thereof |
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| CN201810510463.0A CN108642746B (en) | 2018-05-24 | 2018-05-24 | Sewing embroidery machine rotating shuttle containing wear-resistant ceramic parts and preparation method thereof |
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| CN110640144A (en) * | 2019-10-22 | 2020-01-03 | 曲靖中铭科技有限公司 | Tapping-free sintering process for internal threads of MIM (metal injection molding) product |
| CN117047110A (en) * | 2020-06-19 | 2023-11-14 | 东阳市金鑫缝纫机配件厂 | Manufacturing method of sewing machine spare and accessory parts |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0775638B2 (en) * | 1993-03-12 | 1995-08-16 | 株式会社廣瀬製作所 | Vertical full rotary hook |
| JPH07665A (en) * | 1993-06-21 | 1995-01-06 | Hirose Mfg Co Ltd | Part of sewing machine |
| JP2613007B2 (en) * | 1993-10-19 | 1997-05-21 | 株式会社廣瀬製作所 | Sewing machine bite |
| JP2572539B2 (en) * | 1993-12-24 | 1997-01-16 | 株式会社廣瀬製作所 | Combination of bobbin case and inner bite |
| JP2004049257A (en) * | 2002-07-16 | 2004-02-19 | Juki Corp | Power transmission mechanism of sewing machine |
| CN2923775Y (en) * | 2006-07-21 | 2007-07-18 | 潘学强 | Wear-resisting oil-free rotary shuttle of flat seamer |
| CN101161902A (en) * | 2006-10-11 | 2008-04-16 | 梁少俊 | Sewing machine rotating shuttle frame and manufacturing method thereof |
| CN101173428A (en) * | 2006-10-31 | 2008-05-07 | 张培栋 | Rotating shuttle |
| CN202380243U (en) * | 2011-12-20 | 2012-08-15 | 曾少波 | Micro oil self-lubricating rotating shuttle for sewing machine |
| CN206256257U (en) * | 2016-09-27 | 2017-06-16 | 宜昌后皇真空科技有限公司 | A kind of use in sewing machine oil-free wear-resistant rotating shuttle |
| CN206486687U (en) * | 2017-02-06 | 2017-09-12 | 浙江越隆缝制设备有限公司 | The good Jing Yin embroidery machine shuttle box of sealing |
| CN206616346U (en) * | 2017-03-23 | 2017-11-07 | 东阳市太极精密制造有限公司 | Novel sewing machine rotating shuttle structure |
| CN206616347U (en) * | 2017-03-23 | 2017-11-07 | 东阳市太极精密制造有限公司 | The bobbin case location structure of sewing-machine rotating shuttle shuttle frame |
| CN106968060B (en) * | 2017-03-23 | 2019-05-31 | 东阳市太极精密制造有限公司 | Novel sewing machine rotating shuttle structure |
| CN208346441U (en) * | 2018-05-24 | 2019-01-08 | 东阳市太极精密制造有限公司 | A kind of wear-resistant rotating shuttle for embroidery machine of sewing |
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