Shuttle frame with plastic guide rail

Abstract

The utility model provides a shuttle frame with a plastic guide rail, which comprises a shuttle frame main body with a bottom wall, the side wall of the shuttle frame main body is provided with an opening, the side wall of the peripheral side of the shuttle frame main body is provided with the guide rail which is approximately wound for a circle along the circumferential direction, and the central position of the inner bottom wall of the shuttle frame main body is provided with a mandrel; two positioning through holes symmetrically distributed in the two sides of the mandrel are formed in the bottom wall of the shuttle frame body, the guide rail is a plastic guide rail, and the guide rail and the shuttle frame body are detachably connected through a fixing mechanism. According to the shuttle frame with the plastic guide rail, the guide rail is the plastic guide rail, the guide rail and the shuttle frame body are detachably connected through the fixing mechanism, the guide rail is convenient to disassemble, assemble and replace, meanwhile, the guide rail is made of plastic, the guide rail is convenient to prepare, and the guide rail can be replaced timely and conveniently when abraded; the maintenance cost and the maintenance time are effectively reduced, the overall service life is greatly prolonged, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing equipment and embroidery equipment, in particular to a shuttle rack with a plastic guide rail. Background Art

[0002] The sewing machine is provided with a rotary hook on the lower side of the needle plate. The rotary hook includes a shuttle bed and a shuttle frame. The shuttle bed rotates integrally with the shaft as the needle moves up and down, and can rotatably support the shuttle frame. The shuttle frame can rotate independently of the shuttle bed, and includes a locking mouth on its outer peripheral portion. The locking mouth engages with the shuttle stopper included in the sewing machine to stop the rotation amplitude of the shuttle frame, so that the shuttle frame does not rotate with the shuttle bed. The upper thread passes through the needle eye of the machine needle. The sewing machine uses the shuttle bed to capture the upper thread of the machine needle after passing through the fabric, and interweaves the upper thread with the bottom thread held by the shuttle frame in the stopped state to perform sewing.

[0003] At present, the shuttle rack components on sewing equipment are all made of stainless steel and are processed to form an integral structure. For example, the utility model patent applied by the applicant on October 18, 2022, with the publication number CN218596679U, the publication date 2023-03-10, and the application number CN202222739834.7, discloses an improved shuttle rack, including: a shuttle rack body with a bottom wall having an opening on the side wall, and a guide rail roughly around the circumference of the shuttle rack body is formed on the side wall of the outer peripheral side of the shuttle rack body. There is a mandrel at the center of the inner bottom wall of the body. Both ends of the guide rail are arc ends. Two steps are reserved on the arc end surfaces of both ends of the guide rail. The steps are set perpendicular to the side wall of the shuttle frame body. When the shuttle frame parts on the sewing equipment rotate at high speed, the guide rail is prone to heat and wear. Due to the high precision requirements of the guide rail parts, the machining difficulty is also very high. The guide rail is the part that contacts the equipment. If the other parts of the shuttle frame are intact, the contact parts will wear quickly and heat up, causing the shuttle frame to be scrapped. Poor processing will also lead to product quality problems. In order to reduce the waiting time for maintenance, improve production efficiency, extend the service life of parts, and improve product quality.

[0004] For this purpose, a shuttle rack with a plastic guide rail is proposed. Utility Model Content

[0005] The utility model aims to solve the problems raised in the background technology and provides a shuttle rack with a plastic guide rail.

[0006] The specific technical solutions are as follows:

[0007] A shuttle rack with a plastic guide rail comprises: a shuttle rack body with a bottom wall having an opening in the side wall, the shuttle rack body being provided with a guide rail which roughly goes around the circumference on the side wall on the outer peripheral side thereof, a core shaft being provided at the center position of the inner bottom wall of the shuttle rack body, and two positioning through holes symmetrically distributed on both sides of the core shaft being provided on the bottom wall of the shuttle rack body, the guide rail being a plastic guide rail, and being detachably connected to the shuttle rack body by a fixing mechanism, the fixing mechanism comprising a plurality of fixing posts integrally arranged on the inner arc surface of the guide rail and a plurality of fixing holes opened on the side wall of the shuttle rack body, the fixing posts being arranged in a one-to-one correspondence with the fixing holes, and the fixing posts being inserted into the fixing holes by interference fit.

[0008] As a preferred solution of the present utility model, the number of the fixing columns is equal to the number of the fixing holes, and both are not less than 3.

[0009] As a preferred solution of the utility model, the core shaft has an annular locking groove and an annular gasket, the annular locking groove is arranged near the end of the core shaft away from the bottom wall of the shuttle rack body, and the annular gasket is located at the connection between the core shaft and the bottom wall of the shuttle rack body.

[0010] As a preferred solution of the utility model, a garbage chute is reserved on the outer side of the guide rail, and at least five garbage chutes are provided.

[0011] As a preferred solution of the utility model, an eight-shaped opening is provided on the end edge of the side wall of the shuttle rack body.

[0012] As a preferred solution of the utility model, a limiting portion is provided on the inner side surface of the side wall of the shuttle rack body.

[0013] As a preferred solution of the utility model, a needle groove is provided on the side wall of the shuttle rack body at a position close to the eight-shaped opening.

[0014] As a preferred solution of the utility model, a door locking hole is provided on the side wall of the shuttle rack body.

[0015] The utility model has the following beneficial effects:

[0016] The utility model provides a shuttle rack with a plastic guide rail, in which the guide rail is a plastic guide rail, and a fixing mechanism is used between the guide rail and the shuttle rack body for detachable connection, so that the guide rail is easy to disassemble, assemble and replace. At the same time, it is made of plastic, which is convenient for preparing the guide rail, and can be replaced in time and conveniently when the guide rail is worn, effectively reducing maintenance costs and reducing maintenance time, greatly increasing the overall service life, and improving production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1A schematic structural diagram of a shuttle rack with a plastic guide rail provided in an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the structure of a shuttle rack with a plastic guide rail provided in another perspective according to an embodiment of the utility model Figure 1 ;

[0019] Figure 3 A schematic diagram of the exploded structure of a shuttle rack with a plastic guide rail provided in an embodiment of the utility model;

[0020] Figure 4 A schematic diagram of the structure of a shuttle rack with a plastic guide rail provided in another perspective according to an embodiment of the utility model Figure 2 ;

[0021] Figure 5 A schematic diagram of the structure of a shuttle rack with a plastic guide rail provided in another perspective according to an embodiment of the utility model Figure 3 ;

[0022] Figure 6 A schematic diagram of the structure of a shuttle rack with a plastic guide rail provided in another perspective according to an embodiment of the utility model Figure 4 .

[0023] In the attached figure:

[0024] 1. Shuttle rack body; 101. Positioning through hole; 102. Locking hole; 103. Needle slot; 104. Eight-shaped opening; 105. Limiting part; 106. Fixing hole;

[0025] 2. Guide rail; 201. Fixed column; 202. Garbage chute;

[0026] 3. Mandrel; 301. Annular locking groove; 302. Annular gasket. DETAILED DESCRIPTION

[0027] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0028] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0029] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The utility model provides a shuttle rack with a plastic guide rail, such as Figure 1-Figure 6 As shown, it includes: a shuttle rack body 1 with a bottom wall having an opening on the side wall, a guide rail 2 which is roughly circumferentially arranged on the side wall on the outer peripheral side of the shuttle rack body 1, a core shaft 3 is provided at the center position of the inner bottom wall of the shuttle rack body 1, and the bottom wall of the shuttle rack body 1 has two positioning through holes 101 symmetrically distributed on both sides of the core shaft 3, the guide rail 2 is a plastic guide rail, and the guide rail 2 and the shuttle rack body 1 are detachably connected by a fixing mechanism, the fixing mechanism includes a plurality of fixing columns 201 integrally arranged on the inner arc surface of the guide rail 2 and a plurality of fixing holes 106 opened on the side wall of the shuttle rack body 1, the fixing columns 201 and the fixing holes 106 are arranged one by one, and the fixing columns 201 are inserted into the fixing holes 106 by interference fit.

[0032] The shuttle rack with plastic guide rails designed using the above technical solution has a plastic guide rail 2, and the guide rail 2 and the shuttle rack body 1 are detachably connected using a fixing mechanism, so that the guide rail 2 is easy to disassemble, install and replace. At the same time, it is made of plastic, which is convenient for preparing the guide rail 2. When the guide rail 2 is worn, it can be replaced in time and conveniently, effectively reducing maintenance costs and time, greatly increasing the overall service life, and improving production efficiency and product quality.

[0033] It is worth noting that the guide rail 2 can be made of the following plastics:

[0034] 1. Polyetheretherketone (PEEK):

[0035] Advantages: PEEK has extremely high wear resistance, high temperature resistance (up to 260°C) and chemical corrosion resistance. These characteristics make PEEK perform well in high-speed, high-temperature and corrosive environments. In addition, PEEK also has good mechanical strength and processing properties, and can be processed by processes such as injection molding.

[0036] Applicability: PEEK's excellent properties make it an ideal choice for the guide rails of sewing equipment. Its wear resistance can reduce the wear of the guide rails when rotating at high speeds, its high temperature resistance helps reduce the heating problem of the guide rails, and its chemical corrosion resistance ensures that the guide rails remain stable in a variety of environments.

[0037] 2. Polyphenylene sulfide (PPS):

[0038] Advantages: PPS has excellent chemical corrosion resistance, mechanical properties and thermal stability. It can maintain stable performance in high temperature and corrosive environments.

[0039] Applicability: PPS's wear and temperature resistance make it suitable for guide rails in sewing equipment. However, compared with PEEK, PPS may be slightly inferior in some aspects.

[0040] 3. Polysulfone (PSU or PSF):

[0041] Advantages: PSU has excellent heat resistance, cold resistance, aging resistance and chemical corrosion resistance. It can maintain stable performance in a wide temperature range.

[0042] Suitability: PSU's heat and chemical resistance make it a potential choice for guide rails in sewing equipment. However, PSU may be less wear-resistant than PEEK.

[0043] In summary, polyetheretherketone (PEEK) is most suitable for the guide rails of sewing equipment due to its extremely high wear resistance, high temperature resistance and chemical corrosion resistance, as well as good mechanical strength and processing performance. This material can effectively reduce the wear and heat problems of the guide rails during high-speed rotation, and improve the operating efficiency and stability of the equipment.

[0044] In order to ensure the connection stability between the guide rail 2 and the shuttle rack body 1, the number of the fixing columns 201 and the fixing holes 106 is equal and no less than 3.

[0045] In order to make the shuttle rack with plastic guide rails better compatible with the external shuttle rack, in the present embodiment, the core shaft 3 is provided with an annular locking groove 301 and an annular pad 302, the annular locking groove 301 is arranged near the end of the core shaft 3 away from the bottom wall of the shuttle rack body 1, the annular pad 302 is located at the connection between the core shaft 3 and the bottom wall of the shuttle rack body 1, a garbage trough 202 is reserved on the outer surface of the guide rail 2, and there are at least five garbage troughs 202, an eight-shaped opening 104 is arranged on the end edge of the side wall of the shuttle rack body 1, a limiting portion 105 is arranged on the inner side surface of the side wall of the shuttle rack body 1, a needle groove 103 is arranged on the side wall of the shuttle rack body 1 near the eight-shaped opening 104, and a lock door hole 102 is arranged on the side wall of the shuttle rack body 1.

[0046] In summary, the shuttle rack with plastic guide rails provided in this embodiment has the following advantages:

[0047] The shuttle rack with plastic guide rails has a guide rail 2 which is a plastic guide rail, and a fixing mechanism is used to detachably connect the guide rail 2 to the shuttle rack body 1, so that the guide rail 2 is easy to disassemble, install and replace. At the same time, it is made of plastic, which is convenient for preparing the guide rail 2. When the guide rail 2 is worn, it can be replaced in time and conveniently, effectively reducing maintenance costs and time, greatly increasing the overall service life, and improving production efficiency and product quality.

[0048] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A shuttle rack with a plastic guide rail, comprising: A shuttle rack body (1) with a bottom wall and an opening on the side wall, the shuttle rack body (1) is provided with a guide rail (2) on the side wall on the outer peripheral side thereof, which is approximately circumferentially arranged, a core shaft (3) is provided at the center position of the inner bottom wall of the shuttle rack body (1), and the bottom wall of the shuttle rack body (1) is provided with two positioning through holes (101) symmetrically distributed on both sides of the core shaft (3), characterized in that: the guide rail (2) is a plastic guide rail, and the guide rail (2) and the shuttle rack body (1) are detachably connected by a fixing mechanism, the fixing mechanism comprising a plurality of fixing columns (201) integrally arranged on the inner arc surface of the guide rail (2) and a plurality of fixing holes (106) opened on the side wall of the shuttle rack body (1), the fixing columns (201) and the fixing holes (106) are arranged one-to-one with each other, and the fixing columns (201) are inserted into the fixing holes (106) by interference fit.

2. The shuttle rack with plastic guide rails according to claim 1, characterized in that: The number of the fixing columns (201) is equal to the number of the fixing holes (106), and both are no less than 3.

3. The shuttle rack with plastic guide rails according to claim 2, characterized in that: The spindle (3) is provided with an annular locking groove (301) and an annular gasket (302); the annular locking groove (301) is arranged near one end of the spindle (3) away from the bottom wall of the shuttle rack body (1); and the annular gasket (302) is located at the connection between the spindle (3) and the bottom wall of the shuttle rack body (1).

4. The shuttle rack with plastic guide rails according to claim 1, characterized in that: A garbage chute (202) is reserved on the outer side of the guide rail (2), and at least five garbage chutes (202) are provided.

5. The shuttle rack with plastic guide rails according to claim 1, characterized in that: An eight-shaped opening (104) is provided on the end edge of the side wall of the shuttle rack body (1).

6. The shuttle rack with plastic guide rails according to claim 5, characterized in that: The shuttle rack body (1) has a limiting portion (105) on the inner side of the side wall.

7. The shuttle rack with plastic guide rails according to claim 6, characterized in that: A needle groove (103) is provided on the side wall of the shuttle rack body (1) at a position close to the eight-shaped opening (104).

8. The shuttle rack with plastic guide rails according to claim 7, characterized in that: A door locking hole (102) is provided on the side wall of the shuttle rack body (1).

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