Middle core of circular knitting machine accurate and simple in positioning

Abstract

The utility model relates to the technical field of textile machinery, in particular to a circular knitting machine core accurate and simple in positioning, which comprises a base and a plurality of triangular seat blocks detachably fixed on the base, the base comprises a base body and a placing table integrally formed on the upper surface of the outer edge of the base body, the inner edge of the containing table is provided with a limiting protruding block integrally formed with the base body, a first oblique threaded hole inclining towards the center position of the base body is integrally formed in the containing table, and the triangular seat block comprises a triangular seat block body and a second oblique threaded hole integrally formed in the triangular seat block body and penetrating through the triangular seat block body. The first inclined threaded hole and the second inclined threaded hole are the same in inclination, and when the center core is used, the center core is not prone to loosening, meanwhile, the number of installation steps is smaller, and installation precision is higher.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery technology, specifically to a core component of a large circular knitting machine that is accurate and simple to position. Background Technology

[0002] The center plate is the ring-shaped support and positioning base of the upper plate of a circular knitting machine. As a key link in the transmission chain, it ensures that the upper plate needles and the lower plate needles maintain a precise matching relationship to complete the loop forming process. The center plate includes a ring-shaped support and positioning base fixedly installed on the circular knitting machine and multiple triangular blocks fixed to the base by bolts. The center plate is usually connected to the transmission system of the circular knitting machine, thereby driving the entire upper plate system to rotate synchronously with the lower plate. It is a key component in the circular knitting machine.

[0003] While the aforementioned existing technologies can solve the corresponding technical problems, they still have certain drawbacks: During the assembly process of the core in a large circular knives, the operator first needs to accurately position the triangular seat block to the predetermined position on the base using locating pins, then press it inward, and finally tighten the bolts from top to bottom to complete the fixation. This process is not only cumbersome but also requires a high level of operator experience, as the positioning accuracy depends on manual judgment. Furthermore, continuous lateral pressure needs to be applied during the tightening process to maintain the position of the triangular seat block, which can easily lead to loosening after long-term use, resulting in insecure fixation and increasing the frequency and difficulty of subsequent maintenance. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings and deficiencies of the existing technology by providing a simple and easy-to-install, securely connected, and accurately positioned core for a large circular knitting machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a large circular knitting machine core with accurate and simple positioning, comprising a base and several triangular blocks detachably fixed to the base. The base includes a base body and a placement platform integrally formed on the upper surface of the outer edge of the base body. The inner edge of the placement platform has a limiting protrusion integrally formed with the base body. The placement platform has a first oblique threaded hole integrally formed towards the center of the base body. The triangular blocks include a triangular block body and a second oblique threaded hole integrally formed on the triangular block body and penetrating the triangular block body. The first oblique threaded hole and the second oblique threaded hole have the same inclination.

[0006] A further improvement is that the placement platform is also provided with a positioning slot, and the lower surface of the triangular base block body is integrally formed with a positioning protrusion that can cooperate with the positioning slot.

[0007] A further improvement is that the base body is integrally formed with a base fixing hole, which penetrates the base body.

[0008] A further improvement is that the upper surface of the triangular base block body is integrally formed with several threaded holes.

[0009] A further improvement is that the upper surface of the edge of the triangular base block body is integrally formed with several edge connecting threaded holes.

[0010] After adopting the above technical solution, the beneficial effects of this utility model are as follows: When installing this utility model, the triangular seat block is placed on the base, and the first oblique threaded hole on the base body and the second oblique threaded hole on the triangular seat block body are aligned. Then, the bolt can be locked in to fix the triangular seat block to the base. At this time, since the first oblique threaded hole and the second oblique threaded hole are inclined threaded holes with the same angle, when the bolt is locked in, the bolt head presses on the triangular seat block, so that it is subjected to a lateral force. Then, the triangular seat block is pressed laterally on the limiting protrusion of the base through the lateral force. As the bolt is tightened, the triangular seat block is locked and the end is squeezed and fixed on the base. It is not easy to loosen or twist and shift during long-term use. At the same time, no positioning bolt is required during installation. Just align the first oblique threaded hole and the second oblique threaded hole and lock the bolt to push the end of the triangular seat block to press on the limiting protrusion for positioning. After locking, it is automatically in the correct position. The installation steps are fewer and the installation accuracy is higher. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a top view of the structure of this utility model;

[0013] Figure 2 This is a top view of the base structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the cross-section of the base of this utility model;

[0015] Figure 4 This is a structural schematic diagram of the cross-section of the triangular seat block of this utility model. Detailed Implementation

[0016] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0017] See Figure 1-4As shown, the technical solution adopted in this specific embodiment is: a large circular knitting machine core with accurate and simple positioning, including a base 1 and several triangular blocks 2 detachably fixed on the base 1. The base 1 includes a base body 11 and a placement platform 12 integrally formed on the upper surface of the outer edge of the base body 11. The inner edge of the placement platform 12 has a limiting protrusion 17 integrally formed with the base body 11. A first oblique threaded hole 13 inclined towards the center of the base body 11 is integrally formed on the placement platform 12. The triangular block 2 includes a triangular block body 21 and a second oblique threaded hole 22 integrally formed on the triangular block body 21 and penetrating the triangular block body 21. The first oblique threaded hole 13 and the second oblique threaded hole 22 have the same inclination. During installation, the triangular block 2 is placed on the base 1, and the first oblique threaded hole 13 on the base body 11 and the triangular block body 21 are aligned. Align the second oblique threaded hole 22 on body 21, and then lock in the bolt to fix the triangular block 2 to the base 1. At this time, since the first oblique threaded hole 13 and the second oblique threaded hole 22 are inclined threaded holes with the same angle, when the bolt is locked in, the bolt head presses on the triangular block 2, so that it is subjected to a lateral force. Then, through the lateral force, the triangular block 2 is laterally pressed against the limiting protrusion 17 of the base 1. As the bolt is tightened, the triangular block 2 is locked and its end is squeezed and fixed on the base 1. It is not easy to loosen or twist and shift during long-term use. At the same time, no positioning bolt is needed during installation. Just align the first oblique threaded hole 13 and the second oblique threaded hole 22 and lock in the bolt to push the end of the triangular block 2 to press on the limiting protrusion 17 for positioning. After locking, it is automatically in the correct position. There are fewer installation steps and higher installation accuracy.

[0018] The placement platform 12 is also provided with a positioning slot 16. The lower surface of the triangular block body 21 is integrally formed with a positioning protrusion 25 that can cooperate with the positioning slot 16. This positioning structure adopts a clearance fit, which can not only ensure the smoothness of the placement of the triangular block 2, but also play an auxiliary guiding role in the locking process, preventing the triangular block 2 from deflecting in the initial stage of bolt tightening. This improves the convenience and centering of installation. It is beneficial to place the triangular block 2 in the correct position more quickly by using the positioning protrusion 25 in cooperation with the positioning slot 16 when placing the triangular block 2, so that the installation and alignment of the first oblique threaded hole 13 and the second oblique threaded hole 22 are faster and more convenient.

[0019] The base body 11 also has integrally formed base fixing holes 15, which penetrate the base body 11. The base fixing holes 15 are countersunk through holes, evenly distributed around the circumference of the base body 11, and are used to fix the base 1 to the frame of the large circular knitting machine using high-strength internal hexagon screws. The countersunk design prevents the screw heads from protruding from the base surface, avoiding interference with moving parts, and making it easier to install the base 1 onto the large circular knitting machine through the base fixing holes 15.

[0020] The upper surface of the triangular block body 21 is also integrally formed with several threaded holes 23. The threaded holes 23 are blind holes, distributed at key stress positions of the triangular block body 21, and are used to install core working components such as knitting triangles and needle tracks. The depth and thread specifications of the threaded holes 23 are designed according to the load requirements of the installed components. Common specifications are M6, M8 or M10, which ensures the stability of the component connection and makes it simpler and more convenient to install various core components such as knitting triangles on the triangular block body 21 through the threaded holes 23.

[0021] The upper surface of the triangular base block body 21 at its edge is also integrally formed with several edge connecting threaded holes 24. The edge connecting threaded holes 24 are used to install auxiliary mechanisms, such as yarn guide brackets, dust removal devices, or lubrication pipeline fixing seats and other expansion modules. The setting of the edge connecting threaded holes 24 gives the core a good modular expansion capability, which makes it easy for users to customize the function according to different weaving process requirements, and facilitates the installation of auxiliary mechanisms.

[0022] Specifically, during installation, the operator first places the triangular block 2 on the placement platform 12 of the base 1, and uses the positioning protrusion 25 on the lower surface of the triangular block body 21 to initially align it with the positioning slot 16 on the placement platform 12, ensuring that the triangular block 2 is within the preset installation range in the radial and circumferential directions. At this time, the first oblique threaded hole 13 on the base body 11 and the second oblique threaded hole 22 on the triangular block body 21 naturally form an aligned state, facilitating subsequent locking operations.

[0023] Subsequently, the operator passes the bolt through the second oblique threaded hole 22 and screws it into the first oblique threaded hole 13. Since both the first oblique threaded hole 13 and the second oblique threaded hole 22 are threaded holes inclined towards the center of the base body 11 with the same angle, during the tightening process, the bolt head gradually presses down on the upper surface of the triangular block body 21, generating a lateral force perpendicular to the bolt axis. This lateral force drives the triangular block body 21 to move inward toward the base body 11 until the inner end of the triangular block body 21 is tightly abutted against the limiting protrusion 17. As the bolt is further tightened, the triangular block 2 is firmly locked onto the base 1, while its end is precisely radially positioned by the limiting protrusion 17.

[0024] This connection method allows the triangular seat block 2 to withstand not only vertical clamping force after locking, but also continuous lateral clamping force through the inclined surface, thus ensuring that the triangular seat block 2 is not prone to loosening, radial displacement, or torsion after long-term use. Compared with the traditional installation method of positioning before locking, this structure omits the additional positioning pin operation, simplifies the installation steps, reduces the technical requirements for operators, and improves installation consistency.

[0025] In terms of material selection, both the base 1 and the triangular block 2 are made of high-strength ductile iron, such as QT500-7, or precision cast alloy steel, integrally cast, possessing good mechanical strength, fatigue resistance, and dimensional stability. The base body 11, placement platform 12, limiting protrusion 17, positioning slot 16, and first oblique threaded hole 13 are all integrally formed during casting, reducing subsequent machining and ensuring structural consistency. The triangular block body 21, positioning protrusion 25, second oblique threaded hole 22, connecting threaded hole 23, and edge connecting threaded hole 24 are also manufactured using an integral forming process, ensuring the geometric accuracy and assembly interchangeability of each component. All threaded holes undergo precision tapping after casting, with a thread tolerance grade of 6H, ensuring reliable bolt connections.

[0026] The working principle of this utility model is as follows: During installation, the triangular block 2 is placed on the base 1, and the first oblique threaded hole 13 on the base body 11 and the second oblique threaded hole 22 on the triangular block body 21 are aligned. Then, the bolt is locked in to fix the triangular block 2 to the base 1. At this time, since the first oblique threaded hole 13 and the second oblique threaded hole 22 are inclined threaded holes with the same angle, when the bolt is locked in, the bolt head presses on the triangular block 2, subjecting it to a lateral force. This lateral force then presses the triangular block 2 laterally against the limiting protrusion 17 of the base 1. As the bolt is tightened, the triangular block 2 is locked and its end is pressed and fixed to the base 1. It is not easy to loosen or twist during long-term use. At the same time, no positioning bolt is required during installation. Simply align the first oblique threaded hole 13 and the second oblique threaded hole 22 and lock in the bolt to push the end of the triangular block 2 against the limiting protrusion 17 for positioning. After locking, it automatically reaches the correct position. The installation steps are fewer and the installation accuracy is higher.

[0027] This utility model aims to protect the structure of the product. The model numbers of the components are not the focus of this utility model's protection, as they are common technology. Any component on the market that can achieve the functions described above can be used as an option. Therefore, the model numbers and other parameters of the components are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the various components.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A large circular kneading machine core with accurate and simple positioning, comprising a base (1) and several triangular blocks (2) detachably fixed to the base (1), characterized in that: The base (1) includes a base body (11) and a placement platform (12) integrally formed on the upper surface of the outer edge of the base body (11). The inner edge of the placement platform (12) has a limiting protrusion (17) integrally formed with the base body (11). The placement platform (12) has a first oblique threaded hole (13) inclined toward the center of the base body (11). The triangular block (2) includes a triangular block body (21) and a second oblique threaded hole (22) integrally formed on the triangular block body (21) and penetrating the triangular block body (21). The first oblique threaded hole (13) and the second oblique threaded hole (22) have the same inclination.

2. The core of a large circular knitting machine with accurate and simple positioning according to claim 1, characterized in that: The placement platform (12) is also provided with a positioning slot (16), and the lower surface of the triangular base block body (21) is integrally formed with a positioning protrusion (25) that can cooperate with the positioning slot (16).

3. The core of a large circular knitting machine with accurate and simple positioning according to claim 1, characterized in that: The base body (11) is also integrally formed with a base fixing hole (15), which penetrates the base body (11).

4. The core of a large circular knitting machine with accurate and simple positioning according to claim 1, characterized in that: The upper surface of the triangular seat block body (21) is also integrally formed with several connecting threaded holes (23).

5. The core of a large circular knitting machine with accurate and simple positioning according to claim 1, characterized in that: The upper surface of the edge of the triangular block body (21) is also integrally formed with several edge connecting threaded holes (24).

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