Heart sliding block of large circular knitting machine

Abstract

The utility model relates to the technical field of knitting machinery, in particular to a heart sliding block of a large disc knitting machine, which comprises a saddle, a fixed block is fixedly connected to the top of the saddle, a sliding way is arranged on one side of the fixed block, a movable plate is arranged in the sliding way in a sliding mode, and balls are installed on two sides of the movable plate. And the balls are in rolling contact with the inner wall of the slide way. By arranging the ball rolling structure between the movable plate and the slide way, traditional sliding friction is converted into rolling friction, the operating force needing to be applied in the adjusting process is remarkably reduced, the height of the heart sliding block is adjusted more conveniently and flexibly, and the operating efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of knitting machinery technology, and in particular to a core slider of a large circular knitting machine. Background Technology

[0002] In the field of knitting machinery, especially in large circular knitting machines, the cam set is one of the key components for controlling the movement trajectory of the knitting needles. Its structural design and adjustment performance are directly related to the knitting quality and production efficiency of the fabric. In the cam set structure, the "heart slider" is a special guiding component, named for its heart-shaped outline. This slider, through its cooperation with the needle feet, provides support and guidance during the up-and-down movement of the needles. It is a key element for realizing complex needle selection actions and knitting trajectory control. The change in the height position of the heart slider will directly affect the movement curve of the knitting needles, the accuracy of the jacquard action, and the stability of the loop formation process, thus having a significant impact on the forming quality, surface smoothness, and structure of the fabric.

[0003] Patent CN221117835U discloses a jacquard needle selection cam for a circular knitting machine. The patent includes a mounting plate with vertical plates fixedly connected to both sides of its top. A fastening bolt is threaded into the inner cavity of each vertical plate. A bearing is movably connected to one side of each fastening bolt, and a clamping plate is fixedly connected to one side of the bearing. A fixing plate is engaged with one side of the clamping plate. Slide tracks are fixedly connected to both sides of the surface of the fixing plate, and a slider is slidably connected to the inner cavity of each slide track. The jacquard needle selection cam body is fixedly connected to the surface of the slider. Threaded blocks are fixedly connected to both sides of the front and back surfaces of the mounting plate, and mounting bolts are threaded into the inner cavities of each threaded block. This patent utilizes vertical plates and fastening bolts... The use of bolts, bearings, and clamps improves the ease of disassembly and assembly, solving the problems of difficult replacement and inconvenient maintenance of traditional needle selection triangles, and enhancing the operability and maintainability of the equipment. However, in practical applications, this patent still has some shortcomings. Due to the large contact area between the slider and the slide rail, there is significant frictional resistance. When it is necessary to frequently adjust the height of the slider to adapt to different fabric types or process parameters, the operator needs to apply a large external force to complete the manual adjustment. This not only increases labor intensity but also easily leads to a decrease in adjustment accuracy, thereby affecting the consistency of fabric quality and the stability of equipment operation. In addition, excessive friction may accelerate the wear between the slider and the slide rail, reduce service life, and increase maintenance frequency and costs.

[0004] Therefore, there is an urgent need to provide a large disc knitting machine's core slider that can reduce the frictional resistance between the slider and the track. Utility Model Content

[0005] In order to overcome the shortcomings of existing triangular devices, such as large contact area and high frictional resistance between the slider and the slide rail, which leads to difficult adjustment, poor accuracy and easy wear, this utility model provides a large disc knitting machine core slider that can reduce the frictional resistance between the slider and the slide rail.

[0006] To address the aforementioned issues, this utility model employs the following technical solution: a heart-shaped slider for a large circular knitting machine, comprising a saddle, a fixed block fixedly connected to the top of the saddle, a slide rail on one side of the fixed block, a movable plate slidably disposed within the slide rail, ball bearings mounted on both sides of the movable plate, the ball bearings forming rolling contact with the inner wall of the slide rail, a heart-shaped slider cooperating with a knitting needle fixedly mounted on the movable plate by screws, a threaded hole on the other side of the fixed block, a first threaded adjusting rod threadedly connected within the threaded hole, a trapezoidal pressure block fixedly connected to the rear end of the first threaded adjusting rod, and a pressure groove matching the shape of the trapezoidal pressure block on the side of the movable plate near the trapezoidal pressure block.

[0007] Furthermore, the bottom of the saddle is provided with an anti-slip pad.

[0008] Furthermore, a positioning pin is provided in the middle of the saddle, and a corresponding pin hole matching the positioning pin is provided on the frame of the knitting machine. The positioning pin has a threaded hole along the axial direction inside, and a second threaded adjusting rod is threadedly connected inside the threaded hole. The lower end of the second threaded adjusting rod is connected to a ball through a flexible connecting rope. In addition, a semi-circular notch is provided on the lower side of the second threaded adjusting rod, and a locking hole adapted to the size of the ball is opened on the bottom side wall of the positioning pin.

[0009] Furthermore, magnetic blocks are embedded on both sides of the fixing block.

[0010] Furthermore, a scale is provided on one side of the movable plate.

[0011] Furthermore, the front end surface of the first threaded adjusting rod is provided with anti-slip protrusions.

[0012] Compared with the prior art, the present invention has the following technical effects: 1. By setting a ball rolling structure between the moving plate and the slide, the traditional sliding friction is transformed into rolling friction, which significantly reduces the operating force required during the adjustment process, making the height adjustment of the heart slider more convenient and flexible, and improving the operating efficiency.

[0013] 2. By setting a positioning pin structure in the middle of the saddle and achieving mechanical locking through the linkage ball of the second threaded adjusting rod, the entire heart slider assembly can be quickly installed or disassembled, which not only improves the equipment installation efficiency, but also greatly reduces the difficulty and time cost of daily maintenance and replacement operations. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional sectional view of the saddle, fixing block, and moving plate components of this utility model.

[0016] Figure 3 This is a three-dimensional sectional view of the moving plate, ball bearings, and heart slider components of this utility model.

[0017] Figure 4 This is a three-dimensional sectional view of the movable plate, the first threaded adjusting rod, and the trapezoidal pressure block of this utility model.

[0018] Figure 5 This is a three-dimensional sectional view of the saddle, positioning pin, and retaining ball components of this utility model.

[0019] Figure 6 This is a three-dimensional sectional view of the positioning pin, the second threaded adjusting rod, and the flexible connecting rope of this utility model.

[0020] In the attached diagram, the following labels are used: 1: saddle, 2: fixed block, 3: slide rail, 4: moving plate, 5: ball bearing, 6: screw, 7: heart slider, 8: first threaded adjusting rod, 9: trapezoidal pressure block, 10: anti-slip pad, 11: positioning pin, 12: second threaded adjusting rod, 13: retaining ball, 14: flexible connecting rope, 15: magnet, 16: scale, 17: anti-slip protrusion. Detailed Implementation

[0021] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0022] Example 1: Please refer to Figures 1-4A heart-shaped slider for a large circular knitting machine includes a saddle 1, a fixed block 2 fixedly connected to the top of the saddle 1, a slide rail 3 on the rear side of the fixed block 2, a movable plate 4 slidably disposed within the slide rail 3, and ball bearings 5 ​​mounted on both sides of the movable plate 4. The ball bearings 5 ​​form rolling contact with the inner wall of the slide rail 3, significantly reducing the resistance caused by sliding friction during movement, allowing the movable plate 4 to achieve smooth and stable displacement adjustment within the slide rail 3. A heart-shaped slider 7, which cooperates with the knitting needle, is fixedly mounted on the movable plate 4 by screws 6. The heart-shaped slider 7 has a specific heart-shaped contour and is used to support and guide the foot of the knitting needle during movement, directly affecting the loop-forming action and needle selection accuracy of the knitting needle. A scale 16 is provided on the front side of the movable plate 4, providing the user with an intuitive height adjustment reference standard, allowing the user to precisely control the height of the heart-shaped slider 7 according to actual needs. The increased movement distance significantly improves adjustment accuracy and efficiency. The front of the fixed block 2 has a threaded hole, through which a first threaded adjusting rod 8 is threadedly connected. The front surface of the first threaded adjusting rod 8 has an anti-slip protrusion 17, increasing the feel and friction when manually rotating the adjusting rod. A trapezoidal pressure block 9 is fixedly connected to the rear end of the first threaded adjusting rod 8. The moving plate 4 has a pressure groove matching the shape of the trapezoidal pressure block 9 on its side near the pressure block 9. By rotating the adjusting rod, the movement of the trapezoidal pressure block 9 relative to the pressure groove can be controlled, thereby locking and releasing the moving plate 4. An anti-slip pad 10 is provided at the bottom of the saddle 1 to enhance the friction between this component and the knitting machine frame, preventing unnecessary displacement during operation. Magnetic blocks 15 are embedded on both sides of the fixed block 2, providing additional adsorption force to help maintain close contact between multiple components, further enhancing the overall structural stability.

[0023] When the height of the heart slider 7 needs to be adjusted, first rotate the first threaded adjusting rod 8 to move the trapezoidal pressure block 9 forward and disengage it from the pressure groove. At this time, the locking of the moving plate 4 is released. Then, the moving plate 4 can be slid up and down along the slide 3, thereby moving the heart slider 7 to the desired position. During this process, the rolling contact between the ball bearing 5 and the slide 3 greatly reduces the frictional resistance and ensures the smoothness of the movement. After the adjustment is in place, rotate the first threaded adjusting rod 8 in the opposite direction to move the trapezoidal pressure block 9 backward and re-engage it in the pressure groove, thereby pressing and fixing the moving plate 4, and finally completing the adjustment and positioning of the height of the heart slider 7.

[0024] Example 2: Based on Example 1, please refer to... Figure 5 and Figure 6The saddle 1 has a positioning pin 11 in the middle. The frame of the knitting machine has a corresponding pin hole that matches the positioning pin 11. The positioning pin 11 has a threaded hole along the axial direction. The threaded hole is threaded to a second threaded adjusting rod 12. The lower end of the second threaded adjusting rod 12 is connected to a ball 13 through a flexible connecting rope 14. In addition, the lower end of the second threaded adjusting rod 12 has a semi-circular notch. This semi-circular notch facilitates the second threaded adjusting rod 12 to press the ball 13 smoothly when it is pushed down. The bottom side wall of the positioning pin 11 has a locking hole that matches the size of the ball 13. This locking hole is not only used to accommodate the ball 13, but also allows it to move within a certain range.

[0025] During installation, the positioning pin 11 is first inserted into the pin hole on the knitting machine frame for initial positioning. Then, the second threaded adjusting rod 12 is rotated to push it downward, pushing the retaining ball 13 out of the retaining hole and locking it onto the inner wall of the pin hole, forming a reliable mechanical lock. This significantly improves the installation stability and vibration resistance of the device. Tightening the adjusting rod further enhances the contact pressure between the retaining ball 13 and the pin hole, ensuring a secure fixation. During disassembly, the second threaded adjusting rod 12 is rotated in the opposite direction, causing the retaining ball 13 to retract upward into the retaining hole, releasing the locking state. After the retaining ball 13 is fully reset, the positioning pin 11 can be easily pulled out, completing the entire disassembly process.

[0026] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A heart-shaped slider for a large circular knitting machine, comprising a saddle (1), a fixing block (2) fixedly connected to the top of the saddle (1), a slide rail (3) provided on one side of the fixing block (2), and a movable plate (4) slidably disposed within the slide rail (3), characterized in that, Ball bearings (5) are installed on both sides of the movable plate (4). The ball bearings (5) form rolling contact with the inner wall of the slide (3). A heart-shaped slider (7) that cooperates with the knitting needle is fixedly installed on the movable plate (4) by screws (6). A threaded hole is provided on the other side of the fixed block (2). A first threaded adjusting rod (8) is threadedly connected to the threaded hole. A trapezoidal pressure block (9) is fixedly connected to the rear end of the first threaded adjusting rod (8). A pressure groove matching its shape is opened on the side of the movable plate (4) near the trapezoidal pressure block (9).

2. The heart-shaped slider of a large circular knitting machine according to claim 1, characterized in that, The bottom of the saddle (1) is provided with an anti-slip pad (10).

3. The heart slider of a large circular knitting machine according to claim 2, characterized in that, The saddle (1) is provided with a positioning pin (11) in the middle. The frame of the knitting machine is provided with a pin hole that matches the positioning pin (11). The positioning pin (11) is provided with a threaded hole along the axial direction. The threaded hole is connected to a second threaded adjusting rod (12). The lower end of the second threaded adjusting rod (12) is connected to a ball (13) through a flexible connecting rope (14). In addition, the lower side of the second threaded adjusting rod (12) is provided with a semi-circular notch. The bottom side wall of the positioning pin (11) is provided with a locking hole that matches the size of the ball (13).

4. The heart-shaped slider of a large circular knitting machine according to claim 3, characterized in that, Magnetic blocks (15) are embedded on both sides of the fixing block (2).

5. The heart-shaped slider of a large circular knitting machine according to claim 4, characterized in that, A scale (16) is provided on one side of the movable plate (4).

6. The heart-shaped slider of a large circular knitting machine according to claim 5, characterized in that, The front end surface of the first threaded adjusting rod (8) is provided with anti-slip protrusions (17).

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