Double-faced needle cylinder circular knitting machine

Abstract

The invention discloses a double-faced needle cylinder circular knitting machine which comprises an upper supporting disc and a lower supporting disc, an upper needle disc is installed on the upper supporting disc, a lower needle disc is installed on the lower supporting disc, the upper needle disc and the lower needle disc are matched with each other to achieve knitting, and a cloth passing gap for fabric to pass through is formed between the upper needle disc and the lower needle disc. The device further comprises a linkage frame, the linkage frame is located on the inner circumference of the upper supporting disc, the linkage frame is fixedly connected with the upper supporting disc and the lower supporting disc, and the upper supporting disc and the lower supporting disc synchronously rotate through the linkage frame. The upper supporting disc and the lower supporting disc can be determined to be in a relatively fixed state all the time, synchronous rotation can be achieved, and the influence of rotation errors between the upper needle disc and the lower needle disc can be eliminated.

Description

Technical Field

[0001] This invention relates to a circular knitting machine, and more specifically, to a double-sided syringe circular knitting machine. Background Technology

[0002] The double-sided circular knitting machine has two cylinders, namely the upper needle plate and the lower needle plate. During operation, the upper needle plate and the lower needle plate rotate synchronously to achieve knitting; the knitted fabric flows downward through the gap between the upper needle plate and the lower needle plate to achieve fabric winding.

[0003] In current double-sided circular knitting machines, gear structures are integrally installed on the outer periphery of both the upper and lower needle discs. Vertical drive shafts are mounted on the outside of the needle cylinder, each with two sets of gears that mesh with the upper and lower needle discs respectively. During operation, a drive motor rotates the drive shafts, which, through the gear structures, simultaneously drive the upper and lower needle discs to rotate synchronously, thus enabling the knitting action.

[0004] In the current transmission structure, the upper and lower needle discs are driven by a transmission shaft and gears. During gear transmission, there is a certain amount of play and error, which affects the synchronization of the upper and lower needle discs, and thus affects the knitting stability and accuracy of the circular knitting machine. Moreover, because the radial profiles of the upper and lower needle discs are large, the size of the gears outside the needle cylinder is also large. During the production process, certain accuracy errors will inevitably occur, which will also affect the synchronization of the upper and lower needle discs.

[0005] Therefore, a new technical solution is needed to solve the synchronization problem of the two syringes in a double-syringe circular knives. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a double-sided syringe cylinder rounding machine.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a double-sided circular knitting machine, comprising an upper support plate and a lower support plate, wherein an upper needle plate is mounted on the upper support plate and a lower needle plate is mounted on the lower support plate, the upper needle plate and the lower needle plate are adapted to each other to realize knitting, and a fabric feeding gap is formed between the upper needle plate and the lower needle plate for the fabric to pass through; it also includes a linkage frame, wherein the linkage frame is located on the inner circumference of the upper support plate, and the linkage frame is fixedly connected to the upper support plate and the lower support plate respectively, and the upper support plate and the lower support plate rotate synchronously through the linkage frame.

[0008] Furthermore, the linkage frame includes a linkage arm, the first end of which is fixedly connected to the lower support plate, and the second end of which is fixedly connected to the upper support plate; a fabric cutting knife is installed on the upper side of the linkage arm.

[0009] Furthermore, the linkage frame includes several sets of linkage arms, each linkage arm being evenly distributed in a ring along the lower support plate, and a fabric slitting knife is installed on the upper side of each linkage arm.

[0010] Furthermore, the device includes a frame, the frame including a lower support portion, and a rotatable connection portion fixedly connected to the lower side of the lower support plate, the rotatable connection portion being rotatably mounted on the lower support portion;

[0011] Furthermore, the frame also includes an upper support portion located on the upper side of the frame. The upper support portion includes a fixed shaft seat, in which a central shaft is rotatably mounted. The upper support plate is fixedly connected to the central shaft.

[0012] Furthermore, the central shaft is rotatably mounted in a fixed bearing seat via a bearing assembly, and can achieve circumferential rotation and axial positioning with the fixed bearing seat.

[0013] Furthermore, a movable shaft seat is installed on the inner circumference of the fixed shaft seat, and the central shaft is rotatably installed in the movable shaft seat through a bearing assembly, and can achieve circumferential rotation and axial positioning with the movable shaft seat.

[0014] Furthermore, the movable bearing can slide up and down within the fixed bearing; the fixed bearing is provided with a gear ring mounting part, in which a gear ring is installed, the gear ring being sleeved on the outside of the movable bearing and threadedly connected to the movable bearing; the fixed bearing is also provided with a gear mounting part, in which an adjusting gear is rotatably mounted, the adjusting gear meshing with the gear ring for transmission; it also includes an adjusting driver, which is mounted on the fixed bearing to drive the adjusting gear to rotate.

[0015] Furthermore, it also includes a rotary driver mounted on the upper support portion, the rotary driver being used to drive the central shaft to rotate; the rotary driver includes an output shaft inserted into the upper end of the central shaft, capable of circumferential synchronous transmission and relative axial adjustment.

[0016] Furthermore, it also includes a rotary driver, which is mounted on the lower support portion and is used to drive the lower support disk to rotate; the rotary driver includes an output shaft, on which a drive gear is mounted, and a drive tooth portion is fixed on the outer periphery of the lower support disk, and the drive gear and the drive tooth portion mesh with each other for transmission.

[0017] In summary, the present invention has the following beneficial effects:

[0018] By setting a linkage frame between the upper and lower support plates, the upper and lower support plates can be directly and fixedly connected. The linkage frame enables a rigid fixed connection between the two, eliminating the need for traditional gear and drive shaft structures between the two syringe discs, thus avoiding the influence of ore quantity and meshing accuracy in gear transmission structures. In this solution, the upper and lower support plates are always in a relatively fixed state. During rotation, when one syringe disc rotates, the two are kept fixed together by the linkage frame, achieving synchronous rotation. Therefore, the two syringe discs can always maintain a fixed and synchronous state, eliminating the influence of rotational errors between the upper and lower syringe discs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a double-sided syringe cylinder circular machine in Embodiment 1;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 for Figure 2 Enlarged view at point B in the middle;

[0022] Figure 4 This is a three-dimensional sectional view of a double-sided syringe cylinder circular machine according to Embodiment 1;

[0023] Figure 5 for Figure 4 Enlarged view at point C;

[0024] Figure 6 This is a schematic diagram of a structure in Embodiment 1 where the linkage arm has two sets;

[0025] Figure 7 This is a schematic diagram of the structure of a double-sided syringe cylinder circular machine in Example 2.

[0026] Reference numerals: Upper support plate 1; Upper needle plate 11; Lower support plate 2; Lower needle plate 21; Rotating connection part 22; Linkage frame 3; Linkage arm 31; First end 311; Second end 312; Fabric cutting knife 4; Lower support part 5; Central shaft 6; Upper end part 61; Lower end part 62; Upper support part 7; Fixed shaft seat 71; Gear ring mounting part 711; Gear mounting part 712; Movable shaft seat 72; External thread part 721; Bearing assembly 73; Gear ring 74; Adjusting gear part 741; Internal thread part 742; Adjusting gear 75; Upper blocking part 76; Rotary guide part 77; Rotary driver 8; Motor 81; Reducer 82; Output shaft 821; Fabric feed gap 100. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1

[0029] This embodiment discloses a double-sided syringe round forming machine, referring to... Figure 1 , Figure 4 As shown, the device includes a frame, an upper support plate 1, and a lower support plate 2. The frame serves as the basic support and includes a lower support portion 5. The lower support plate 2 is rotatably mounted on the lower support portion 5 of the frame. A rotating connection portion 22 is fixedly connected to the lower side of the lower support plate 2. A bearing assembly is installed between the rotating connection portion 22 and the lower support portion 5 of the frame to ensure smooth and stable rotation of the lower support plate 2.

[0030] A lower needle plate 21 is installed at the corresponding position on the upper side of the lower support plate 2, and the upper needle plate 11 is supported by the upper support plate 1, so that it can maintain smooth and stable rotation.

[0031] The upper support plate 1 is positioned above the lower support plate 2, and an upper needle plate 11 is installed at a corresponding position on the outer periphery of the upper support plate 1. The upper needle plate 11 and the lower needle plate 21 are adapted to each other to achieve knitting. An annular fabric feeding gap 100 is formed between the upper needle plate 11 and the lower needle plate 21, and the knitted cylindrical fabric can be conveyed downward through the fabric feeding gap 100. Then, the fabric can be collected on the lower side of the lower support plate 2.

[0032] The double-sided syringe cylinder circular machine in this embodiment also includes a linkage frame 3. The linkage frame 3 is located on the inner circumference of the upper support plate 1. The linkage frame 3 is fixedly connected to the upper support plate 1 and the lower support plate 2 respectively, which can directly and rigidly fix the upper support plate 1 and the lower support plate 2, thereby enabling the upper support plate 1 and the lower support plate 2 to rotate synchronously through the linkage frame 3.

[0033] In this embodiment, the linkage frame 3 includes a linkage arm 31, a first end 311, and a second end 312. The first end 311 of the linkage arm 31 is fixedly connected to the lower support plate 2 by bolts or other connecting parts. Alternatively, the first end 311 of the linkage arm 31 can be directly connected and fixed to the lower support plate 2 using an integrally formed structure. The second end 312 of the linkage arm 31 can also be fixedly connected to the upper support plate 1 by bolts or other connecting parts. Alternatively, the second end 312 of the linkage arm 31 can be directly connected and fixed to the upper support plate 1 using an integrally formed structure. The linkage arm 31 can adopt various connection methods, as long as it can fixably connect the upper needle plate 11 and the lower needle plate 21.

[0034] A fabric slitting knife 4 is installed on the upper side of the linkage arm 31. The fabric slitting knife 4 can cut the annular fabric in the direction of the length of the annular fabric. After the fabric is cut, the annular fabric will form a sheet-like fabric, which allows the fabric to flow smoothly downwards without being blocked by the linkage arm 31.

[0035] Specifically, the linkage frame 3 can consist of one linkage arm 31, or it can consist of multiple linkage arms 31. (Refer to...) Figure 1 , Figure 4 The following describes the case of one linkage arm 31.

[0036] The linkage frame 3 includes several sets of linkage arms 31. Multiple linkage arms 31 can be used to fix the upper support plate 1 and the lower support plate 2, thereby increasing the overall rigidity of the linkage frame 3 and ensuring the connection rigidity between the upper support plate 1 and the lower support plate 2. Moreover, for each linkage arm 31, the second end 312 connecting each linkage arm 31 to the upper support plate 1 can adopt an integral structure, thereby ensuring the connection strength performance between each linkage arm 31.

[0037] Reference Figure 6 As shown, two sets of linkage arms 31 can be provided, distributed at 180°. A fabric slitting blade 4 is installed on the upper side of each linkage arm 31, and each blade 4 can slit the annular fabric to form narrower strips. Correspondingly, by increasing the circumferential profile of the syringe, a larger annular tubular fabric of the original size can be obtained, and after slitting, a fabric of corresponding width can also be obtained.

[0038] For example, the linkage frame 3 consists of two sets of symmetrically distributed linkage arms 31; compared with ordinary circular knitting machines, the size of the cylinder of the circular knitting machine is doubled. During the production process, the cutting blades 4 on the two sets of linkage arms 31 can cut the fabric into two sheet-like fabrics.

[0039] In this embodiment, the frame also includes an upper support portion 7, which is located above the lower support portion 5 and is connected and fixed between the two by a support frame, thus forming support on the upper side of the lower support portion 5. The lower support plate 2 is rotatably mounted on the upper support portion 7, enabling circumferential rotation limitation and maintaining axial support in the vertical direction.

[0040] The upper support portion 7 includes a fixed bearing 71, which is approximately located at the center of the entire upper support portion 7. A central shaft 6 is rotatably mounted within the fixed bearing 71, and the central shaft 6 is circumferentially rotatable relative to the upper support portion 7. The lower end 62 of the central shaft 6 extends downward and is fixedly connected to the upper support plate 1, thereby enabling the support assembly of the upper support plate 1.

[0041] Specifically, the central shaft 6 can be directly rotatably mounted within the fixed bearing seat 71 via the bearing assembly 73, enabling circumferential rotation and axial positioning with the fixed bearing seat 71. The bearing assembly 73 can consist of multiple bearings, providing axial support while maintaining smooth rotation, thereby counteracting the gravitational influence of the upper support plate 1 and its corresponding components. This structure is shown in the figure.

[0042] Or, refer to Figure 2 , Figure 3 , Figure 5 As shown, a movable shaft seat 72 is installed on the inner circumference of the fixed shaft seat 71, and the central shaft 6 is rotatably installed in the movable shaft seat 72 through the bearing assembly 73. The fixed shaft seat 71 is an annular sleeve-shaped structure, used to keep the entire frame in a fixed state; the movable shaft seat 72 is also an annular sleeve-shaped structure, movably fitted on the inner circumference of the fixed shaft seat 71, and can be adjusted axially up and down relative to the fixed shaft seat 71.

[0043] The central shaft 6 is rotatably mounted within the movable bearing seat 72 via a bearing assembly 73, enabling circumferential rotation and axial positioning with the movable bearing seat 72. The bearing assembly 73 can consist of multiple bearings, providing axial support while maintaining smooth rotation, thus counteracting the gravity of the upper support plate 1 and its corresponding components. The movable bearing seat 72 can slide up and down within the fixed bearing seat 71. Simultaneously, the movable bearing seat 72's up-and-down adjustment drives the upper support plate 1 and the upper needle plate 11 to move up and down synchronously, thereby adjusting the fabric feeding gap 100 between the upper needle plate 11 and the lower needle plate 21 to accommodate the weaving requirements of different fabrics.

[0044] Between the outer periphery of the movable bearing 72 and the inner periphery of the fixed bearing 71, a mutually compatible structure can be adopted, and a ring-shaped support or guide slide can be used for retention, thereby providing stable support for the movable bearing 72 and its internal components. Moreover, since the movable bearing 72 does not require frequent adjustment, and is usually adjusted during equipment installation and commissioning, a relatively tight fit structure can be adopted between the outer periphery of the movable bearing 72 and the inner periphery of the fixed bearing 71.

[0045] Furthermore, the fixed bearing 71 and the movable bearing 72 can be adjusted using a threaded structure. The fixed bearing 71 is provided with a toothed ring mounting part 711, which is integrally formed on the upper end of the fixed bearing 71, and an annular stepped space is formed on the inner circumference of the toothed ring mounting part 711.

[0046] A gear ring 74 is installed within the internal space of the gear ring mounting portion 711. The gear ring 74 is sleeved on the outside of the movable shaft seat 72 and threadedly connected to the movable shaft seat 72. Specifically, an internal thread portion 742 is integrally formed on the inner circumference of the gear ring 74, and an external thread portion 721 is integrally formed on the outer circumference of the movable shaft seat 72. The internal thread portion 742 and the external thread portion 721 are threadedly matched to each other, enabling threaded transmission.

[0047] To maintain the stability of the gear ring 74, an annular guide 77 is installed between the lower side of the gear ring 74 and the bottom surface of the inner side of the gear ring mounting part 711, thereby ensuring the smooth rotation of the gear ring 74 and avoiding problems such as offset jamming or excessive friction. In addition, an upper blocking member 76 is fixedly installed at the upper open position of the gear ring mounting part 711. The upper blocking member 76 can block the upper end face of the gear ring 74 and maintain the rotational stability of the gear ring 74 within the gear ring mounting part 711.

[0048] A gear mounting portion 712 is integrally formed on the fixed shaft seat 71, and the inner cavity of the gear mounting portion 712 is connected to the inner cavity of the gear ring mounting portion 711. An adjusting gear 75 is rotatably mounted in the gear mounting portion 712, and the adjusting gear 75 meshes with the adjusting teeth 741 on the outer side of the gear ring 74 for transmission.

[0049] In addition, an adjustment driver is installed outside the fixed shaft seat 71. The adjustment driver can be a stepper motor or a servo motor, capable of generating rotational output. The adjustment gear 75 can be directly mounted on the rotating shaft of the adjustment driver to achieve transmission.

[0050] During the adjustment of the fabric feeding gap 100 between the upper needle plate 11 and the lower needle plate 21, the adjustment driver rotates, driving the adjustment gear 75 to rotate; the adjustment gear 75 meshes with the adjustment teeth 741 on the outer side of the gear ring 74, driving the gear ring 74 to rotate. The inner circumference of the gear ring 74 and the outer circumference of the movable shaft seat 72 generate threaded motion, which can convert the circumferential rotation into vertical axial movement, thereby adjusting the vertical position of the movable shaft seat 72 and the upper support plate 1 and the upper needle plate 11 installed on the movable shaft seat 72, thereby adjusting the fabric feeding gap 100 between the upper needle plate 11 and the lower needle plate 21.

[0051] Reference Figure 1 , Figure 2 , Figure 4 As shown, in this embodiment, the rotational power sources of the upper support plate 1 and the lower support plate 2 are explained. This embodiment also includes a rotary driver 8, which is fixedly installed on the upper support part 7. The rotary driver 8 is used to drive the central shaft 6 to rotate, and can specifically be a structure of a motor and a reducer.

[0052] The rotary drive 8 includes a motor 81 and a reducer 82, both of which are fixedly mounted on the upper support 7. The rotational power output by the motor 81 is reduced in speed by the reducer 82 before being output. The reducer 82 of the rotary drive 8 has an output shaft 821, which is inserted into the upper end 61 of the central shaft 6, enabling linkage with the upper end 61 of the central shaft 6 to drive the upper support plate 1. The lower support plate 2 will also rotate in conjunction with the upper support plate 1.

[0053] Furthermore, in this embodiment, the upper support plate 1 needs to adjust vertically in response to the movable shaft seat 72, and there is also a certain vertical adjustment range between the upper end 61 of the central shaft 6 and the output shaft 821. Therefore, a structure for relative axial adjustment is adopted between the upper end 61 of the central shaft 6 and the output shaft 821, such as a flat position or a keyway, which can achieve both circumferential synchronous transmission and axial relative sliding adjustment.

[0054] Example 2

[0055] This embodiment also discloses a double-sided syringe cylinder circular machine, which is described in detail with reference to 7 based on Embodiment 1. In this embodiment, the installation position of the rotary driver 8 is adjusted. The rotary driver 8 is installed on the lower support part 5, and the rotary driver 8 can directly drive the lower support plate 2 to rotate.

[0056] Specifically, the rotary driver 8 includes a motor 81 and a reducer 82, both of which are fixedly mounted on the lower support 5. The rotational power output by the motor 81 is reduced in speed by the reducer 82 before being output. The reducer 82 of the rotary driver 8 has an output shaft 821. A drive gear is mounted on the output shaft 821, and a drive gear is integrally fixedly mounted on the outer circumference of the lower support disk 2. The drive gear and the drive gear mesh with each other for transmission.

[0057] During the transmission process, the rotary driver 8 drives the drive gear to rotate through the output shaft 821. The drive gear meshes with the lower support plate 2 through the drive teeth, driving the lower support plate 2 to rotate. The upper support plate 1 and the lower support plate 2 are rigidly linked through the linkage frame 3 to maintain synchronous rotation.

[0058] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A double-sided syringe cylinder rounding machine, characterized in that, It includes an upper support plate (1) and a lower support plate (2). The upper support plate (1) is equipped with an upper needle plate (11), and the lower support plate (2) is equipped with a lower needle plate (21). The upper needle plate (11) and the lower needle plate (21) are adapted to each other to realize knitting. A fabric feeding gap (100) is formed between the upper needle plate (11) and the lower needle plate (21) for the fabric to pass through. It also includes a linkage frame (3), which is located on the inner periphery of the upper support plate (1). The linkage frame (3) is fixedly connected to the upper support plate (1) and the lower support plate (2) respectively. The upper support plate (1) and the lower support plate (2) rotate synchronously through the linkage frame (3).

2. The double-sided syringe cylinder rounding machine according to claim 1, characterized in that, The linkage frame (3) includes a linkage arm (31), the first end (311) of the linkage arm (31) is fixedly connected to the lower support plate (2), and the second end (312) of the linkage arm (31) is fixedly connected to the upper support plate (1); a fabric cutting knife (4) is installed on the upper side of the linkage arm (31).

3. A double-sided syringe cylinder rounding machine according to claim 2, characterized in that, The linkage frame (3) includes several sets of linkage arms (31), each linkage arm (31) is evenly distributed in a ring along the lower support plate (2), and a cloth cutting knife (4) is installed on the upper side of each linkage arm (31).

4. A double-sided syringe cylinder rounding machine according to claim 1, characterized in that, The machine includes a frame, which includes a lower support (5). A rotating connection (22) is fixedly connected to the lower side of the lower support plate (2). The rotating connection (22) is rotatably mounted on the lower support (5).

5. A double-sided syringe cylinder rounding machine according to claim 1, characterized in that, The frame also includes an upper support (7), which is located on the upper side of the frame (5). The upper support (7) includes a fixed shaft seat (71), in which a central shaft (6) is rotatably mounted. The upper support plate (1) is fixedly connected to the central shaft (6).

6. A double-sided syringe cylinder rounding machine according to claim 4, characterized in that, The central shaft (6) is rotatably mounted in the fixed shaft seat (71) via the bearing assembly (73), and can achieve circumferential rotation and axial positioning with the fixed shaft seat (71).

7. A double-sided syringe cylinder rounding machine according to claim 4, characterized in that, The fixed bearing seat (71) has a movable bearing seat (72) installed on its inner circumference. The central shaft (6) is rotatably installed in the movable bearing seat (72) through the bearing assembly (73), and can achieve circumferential rotation and axial positioning with the movable bearing seat (72).

8. A double-sided syringe cylinder rounding machine according to claim 7, characterized in that, The movable bearing (72) can slide up and down within the fixed bearing (71) for adjustment; the fixed bearing (71) is provided with a gear ring mounting part (711), in which a gear ring (74) is installed, the gear ring (74) is sleeved on the outside of the movable bearing (72) and threadedly connected to the movable bearing (72); the fixed bearing (71) is also provided with a gear mounting part (712), in which an adjusting gear (75) is rotatably mounted, the adjusting gear (75) meshing with the gear ring (74) for transmission; it also includes an adjusting driver, which is mounted on the fixed bearing (71) for driving the adjusting gear (75) to rotate.

9. A double-sided syringe cylinder rounding machine according to claim 5, characterized in that, It also includes a rotary driver (8), which is mounted on the upper support (7) and is used to drive the central shaft (6) to rotate; the rotary driver (8) includes an output shaft (821), which is inserted into the upper end (61) of the central shaft (6) and can transmit synchronously in the circumference and adjust relative to the axial direction.

10. A double-sided syringe cylinder rounding machine according to claim 4, characterized in that, It also includes a rotary driver (8), which is mounted on the lower support (5) and is used to drive the lower support disk (2) to rotate. The rotary driver (8) includes an output shaft (821), on which a drive gear is mounted. The lower support disk (2) has a drive tooth fixed on its outer periphery, and the drive gear and the drive tooth mesh with each other for transmission.

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