A double-sided machine upper and lower needle synchronous alignment adjusting mechanism based on differential transmission

Abstract

The application discloses a double-face machine upper and lower needle synchronous alignment adjusting mechanism based on differential transmission and relates to the technical field of knitting, which comprises a workbench, a differential mechanism, an upper needle disc and a yarn supply machine, the differential mechanism is rotationally connected to the center of the top of the workbench, the differential mechanism is additionally arranged, the upper needle disc and the lower needle cylinder form flexible controllable differential speed, needle position errors caused by various working conditions are adaptively compensated, an alignment mechanism is additionally arranged, a needle position reference is automatically calibrated by means of contact block collision limiting, and the upper and lower needles are accurately engaged, a locking mechanism is additionally arranged, one-way self-locking of a ratchet and pawl is utilized, component reverse rotation deviation is prevented, and the problems of needle skipping, needle striking and loop falling are avoided, and a mounting mechanism is additionally arranged, detachable wear-resistant lining strips are adopted, needle groove wear is reduced, and needle position operation precision is long-term ensured.

Description

Technical Field

[0001] This invention relates to the field of knitting technology, specifically a mechanism for synchronous alignment adjustment of upper and lower needles on a double-sided knitting machine based on differential transmission. Background Technology

[0002] The double-sided knitting machine's upper and lower needle synchronous alignment adjustment mechanism can keep the upper needle plate and lower needle cylinder running on the circular knitting machine, and can flexibly and finely adjust the circumferential phase position of the upper and lower needles to achieve precise alignment and coordination of the upper and lower needles, avoid needle collisions, loop scrambling, and fabric defects, stabilize the loop formation quality of double-sided fabrics, and ensure the high-speed and stable operation of the equipment.

[0003] Existing double-sided circular knitting machines mostly use rigid gears and hard linkage transmission for the upper and lower needle synchronization mechanism. The phase of the upper and lower needle discs and the needle cylinder cannot be flexibly adjusted, making it difficult to accurately generate a controllable speed difference. This easily leads to alignment deviations, needle collisions, and needle breakage. The adjustment accuracy is low, and the debugging is cumbersome. Long-term high-speed operation can easily cause wear and loosening, resulting in fabric texture disorder and a high defect rate. It cannot adapt to the diverse fabric knitting process requirements. Traditional double-sided knitting machines mostly rely on manual calibration and positioning for the upper and lower needles, without an automatic collision alignment structure. The alignment accuracy of the upper and lower needle discs and the needle cylinder is poor, and needle position misalignment is easy to occur. The equipment debugging time is long, and needle collisions and erratic loops are prone to occur during operation. The fabric consistency in mass production is poor, and it is difficult to quickly complete accurate alignment calibration before leaving the factory, which seriously affects the knitting production efficiency and finished product quality. Existing double-sided knitting machines lack a one-way limit and anti-reverse structure for the upper and lower needle synchronization transmission structure. High-speed operation and load impact can easily cause the upper and lower needle discs to shift in the opposite direction and the speed to reverse, resulting in needle position disorder and interference. It is prone to needle collision, skipped needle, and loop failure, resulting in poor synchronization stability. Long-term operation can easily cause phase deviation, which seriously reduces the quality of the fabric surface and has a high equipment failure rate. The existing double-sided knitting machine has a one-piece molded structure for the needle cylinder and needle groove. Long-term friction with the knitting needles can easily cause wear and tear, resulting in increased gaps and needle position deviation. After wear, the entire needle cylinder can only be replaced, which is costly to repair and time-consuming to stop the machine. In addition, the wear resistance of ordinary materials is insufficient, which can easily cause needle collision and fabric damage. Summary of the Invention

[0004] Therefore, in order to overcome the above-mentioned shortcomings, the present invention provides a double-sided machine needle synchronous alignment adjustment mechanism based on differential transmission.

[0005] The present invention is implemented as follows: a double-sided machine needle synchronous alignment adjustment mechanism based on differential transmission is constructed. The device includes a worktable, a differential mechanism is rotatably connected to the top center of the worktable, an upper needle plate is fixedly connected to the top of the differential mechanism, and a yarn supply machine is fixedly connected to the top of the worktable.

[0006] The differential mechanism includes a lower syringe, which is rotatably connected to the top of the worktable. A first connecting rod is fixedly connected to the center of the bottom of the lower syringe. The outer wall of the first connecting rod is fixedly connected to the center of the inside of a gear. A gear set is fixedly connected to the bottom of the first connecting rod. The bottom of the gear set is rotatably connected to a mounting plate. The bottom of the gear set is fixedly connected to the top output shaft of the first motor. A second connecting rod is fixedly connected to the top of the gear. The second connecting rod is segmented, specifically composed of two sets of rods that are sleeved together. Friction blocks are sleeved on the outer walls of both the second and first connecting rods, and the two sets of friction blocks have different coefficients of friction. The upper and lower rods of the second connecting rod are respectively inserted and fixed into the upper and lower slots of the alignment mechanism. Two sets of locking mechanisms are fixedly connected to the outer wall of the upper rod of the second connecting rod. An installation mechanism is provided inside the needle groove on the outer wall of the lower syringe.

[0007] Preferably, the alignment mechanism includes an electromagnetic clutch, the upper and lower rods of the second connecting rod are respectively inserted and fixed to the upper and lower slots of the electromagnetic clutch, the left and right sides of the bottom of the lower syringe are fixedly connected to a first mounting box, the first mounting box is fixedly connected to a second motor, the front output shaft of the second motor is fixedly connected to the gear of the gear plate component, the top of the gear plate component is fixedly connected to a fixing rod, the top of the fixing rod is fixedly connected to a first contact block, and the bottom of the upper needle plate is fixedly connected to a second contact block.

[0008] Preferably, the locking mechanism includes an electromagnetic block, and two sets of electromagnetic blocks are fixedly connected to the outer wall of the upper rod of the second connecting rod. A ratchet is magnetically attracted to the outer wall of the electromagnetic block, and a pawl is unidirectionally engaged and hinged to the outer wall of the ratchet. The bottom of the pawl is rotatably connected to the top of the fixed block.

[0009] Preferably, the mounting mechanism includes a wear-resistant liner block. The wear-resistant liner block is provided inside the needle groove on the outer wall of the lower syringe. A sliding plate is inserted and fixed to the back of the wear-resistant liner block. A heart-shaped groove is provided on the top of the sliding plate. A protruding rod is slidably connected inside the heart-shaped groove. The protruding rod is fixedly connected to one end of the swing rod. A movable plate is fixedly connected to the back of the sliding plate. The left and right sides of the front end of the movable plate are fixedly connected to one end of a spring. The other ends of the two sets of springs are respectively fixedly connected to the left and right sides of the front end of the second mounting box. A limit plate is fixedly connected to the center of the front end of the back of the second mounting box.

[0010] Preferably, the upper needle plate is rotatably connected to the top of the lower syringe, and the first motor is fixedly connected to the bottom right end of the mounting plate.

[0011] Preferably, the gear of the gear tooth plate is rotatably connected to the front end of the first mounting box, and the tooth plate of the gear tooth plate is slidably connected to the front end of the first mounting box.

[0012] Preferably, the electromagnetic block is electrically connected to an external current output device, and the fixing block is fixedly connected to the inside of the first connecting rod.

[0013] Preferably, the ratchet has two sets, and the two sets of ratchet are arranged in opposite directions.

[0014] Preferably, the other end of the swing rod is rotatably connected to the rear side of the bottom inside the second mounting box, and the limiting plate is slidably connected to the outer wall of the sliding plate.

[0015] Preferably, the sliding plate is T-shaped, and the outer wall of the sliding plate is slidably connected to the front end of the second mounting box.

[0016] The present invention has the following advantages: The present invention provides an improved double-sided knitting machine upper and lower needle synchronous alignment adjustment mechanism based on differential transmission, which has the following improvements compared with similar equipment:

[0017] This invention discloses a differential transmission-based double-sided knitting machine needle synchronization adjustment mechanism. It includes a differential speed mechanism that drives a controllable and smooth relative differential rotation between the upper needle plate and the lower needle cylinder, smoothly compensating for needle position deviations caused by wear, thermal deformation, and load fluctuations. An alignment mechanism uses the collision of a first and second contact block to precisely match needle positions through mechanical collision limiting, preventing misalignment and interference between upper and lower needles and ensuring precise and orderly engagement of the needles after machine startup. A locking mechanism uses a pawl and ratchet to restrict the reverse movement of the upper and lower connecting rods, preventing the upper and lower needle cylinders and upper needle plate from reversing and misaligning, ensuring that the upper and lower needles always maintain stable operation in the same direction, avoiding phase reversal, needle position misalignment, interference, and knitting faults such as needle collision, skipped needles, and loop slippage caused by reversal. Finally, an installation mechanism uses detachable and wear-resistant lining blocks to reduce friction and wear between the needles and needle grooves, maintaining needle position accuracy over the long term and preventing needle position deviation and needle collisions caused by needle groove wear. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a three-dimensional exploded view of the differential mechanism of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the alignment mechanism of the present invention;

[0021] Figure 4 This is the present invention. Figure 2 Enlarged structural diagram at point A;

[0022] Figure 5 This is a three-dimensional structural diagram of the locking mechanism of the present invention;

[0023] Figure 6This is a three-dimensional structural diagram of the installation mechanism of the present invention;

[0024] Figure 7 This is the present invention. Figure 6 A magnified structural diagram at point B in the middle.

[0025] The components include: worktable-1, differential mechanism-2, lower syringe-21, first connecting rod-22, gear-23, gear set-24, mounting plate-25, first motor-26, second connecting rod-27, friction block-28, alignment mechanism-29, electromagnetic clutch-291, first mounting box-292, second motor-293, gear tooth plate-294, fixing rod-295, first contact block-296, and second contact block-297. 1. Locking mechanism-210, Electromagnetic block-2101, Ratchet-2102, Pawl-2103, Fixing block-2104, Mounting mechanism-211, Wear-resistant lining block-2111, Sliding plate-2112, Heart-shaped slide groove-2113, Protruding rod-2114, Swing rod-2115, Moving plate-2116, Spring-2117, Second mounting box-2118, Limiting plate-2119, Upper needle plate-3, Yarn supply machine-4. Detailed Implementation

[0026] The following is in conjunction with the appendix Figures 1-7 The principles and features of the present invention are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0027] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The embodiments of this invention will now be described according to its overall structure.

[0029] Example 1:

[0030] Please see Figures 1-2 The present invention provides a double-sided machine needle synchronous alignment adjustment mechanism based on differential transmission, comprising a worktable 1, a differential mechanism 2 rotatably connected to the top center of the worktable 1, an upper needle plate 3 fixedly connected to the top of the differential mechanism 2, and a yarn supply machine 4 fixedly connected to the top of the worktable 1.

[0031] The differential mechanism 2 includes a lower needle cylinder 21, which is connected to a first connecting rod 22 for power transmission. The first connecting rod 22 is equipped with a gear 23 and a gear set 24 for meshing transmission. The gear set 24 is supported and limited by a mounting plate 25 and is connected to a first motor 26 as a power source. A segmented connecting rod 27 is connected above the gear 23 for layered transmission of rotational power. A micro motor for rotating the upper needle plate 3 is fixedly connected inside the upper part of the second connecting rod 27. Friction blocks 28 are fitted on the outer sides of both the first connecting rod 22 and the second connecting rod 27, forming a flexible differential transmission based on different friction coefficients. The second connecting rod 27 cooperates with the alignment mechanism 29 to achieve phase positioning and docking of the upper and lower needles. A locking mechanism 210 is mounted on the rod to prevent reverse offset. The lower needle cylinder 21 is equipped with an installation mechanism 211 for adapting to the stable sliding of the knitting needles. The upper needle plate 3 is connected above the lower needle cylinder 21 to complete the differential synchronous operation of the upper and lower needles.

[0032] The working principle of the differential transmission-based double-sided machine needle synchronous alignment adjustment mechanism according to Embodiment 1 is as follows:

[0033] First, when using this device, place it in the work area, and then connect it to an external power source to provide the power required for its operation.

[0034] Secondly, when differential transmission is required between the lower needle cylinder 21 and the upper needle plate 3, the first motor 26 is started. The first motor 26 drives the gear set 24 to rotate. The gear set 24 synchronously drives the first connecting rod 22 and the gear 23 to rotate synchronously, thereby driving the lower needle cylinder 21 to rotate continuously. At the same time, the gear 23 drives the second connecting rod 27 to rotate, and the second connecting rod 27 drives the upper needle plate 3 to rotate, thereby driving the upper needle plate 3 and the lower needle cylinder 21 to rotate in the same direction. With the cooperation of two layers of friction blocks 28 with different friction coefficients, a flexible friction transmission cooperation is formed in the power transmission process. The power transmission damping is automatically changed according to the weaving load and the running speed, so that a controllable and smooth relative differential rotation is formed between the upper needle plate 3 and the lower needle cylinder 21, which smoothly compensates for the needle position deviation caused by operating wear, thermal deformation and load fluctuation.

[0035] Example 2:

[0036] Please see Figures 3-4 The present invention provides a differential transmission-based double-sided machine upper and lower needle synchronous alignment adjustment mechanism. Compared with Embodiment 1, this embodiment further includes: an alignment mechanism 29, which includes an electromagnetic clutch 291 for locking and releasing the second connecting rod 27, and a first mounting box 292 for mounting and fixing components. The first mounting box 292 is equipped with a second motor 293 that provides lifting power. The second motor 293 is connected to a gear tooth plate 294 for transmitting lifting displacement. A fixing rod 295 for transmitting lifting distance is connected above the gear tooth plate 294. The end of the fixing rod 295 is provided with a first contact block 296 for collision positioning. The upper needle plate 3 is equipped with a second contact block 297 that cooperates with it for limiting and alignment, thereby realizing automatic collision and alignment of the upper and lower needles to find the reference phase.

[0037] In this embodiment:

[0038] Before knitting preparation, the second motor 293 is started. The second motor 293 drives the gear of the gear plate component 294 to rotate, driving the gear plate of the gear plate component 294 to slide vertically upward along the front end of the first mounting box 292. The gear plate of the gear plate component 294 drives the fixing rod 295 to slide vertically upward, causing the first contact block 296 to slide vertically upward. Then, the electromagnetic clutch 291 is stopped, so that the electromagnetic clutch 291 and the second connecting rod 27 are in a non-locked state. Then, the micro motor inside the second connecting rod 27 is started. This micro motor drives the upper needle plate 3. Rotation causes the upper needle plate 3 to drive the second contact block 297 to perform a circular motion. When the first contact block 296 collides with the second contact block 297, the lower needle cylinder 21 and the upper needle plate 3 return to their initial circular reference positions, completing the automated static precise alignment calibration. After alignment is completed, the electromagnetic clutch 291 operates without affecting the subsequent differential mechanism 2 driving the lower needle cylinder 21 and the upper needle plate 3 to perform relative differential dynamic fine-tuning. There is no need for repeated manual adjustment of alignment. The needle position is precisely matched by mechanical collision limit, avoiding misalignment and interference between the upper and lower needles, and ensuring precise and orderly meshing of the upper and lower needles after startup.

[0039] Example 3:

[0040] Please see Figure 5 The present invention provides a differential transmission-based double-sided knitting machine upper and lower needle synchronous alignment adjustment mechanism. Compared with Embodiment 1, this embodiment further includes a locking mechanism 210. The locking mechanism 210 includes an electromagnetic block 2101 that can generate magnetic attraction force when energized. The electromagnetic block 2101 is paired with a ratchet 2102 for unidirectional limit transmission. The electromagnetic block 2101 is slidably connected to the ratchet 2102 when not energized. The ratchet 2102 is engaged with a pawl 2103 for preventing reverse rotation. The pawl 2103 is rotated and supported by a fixed block 2104. The two sets of ratchet 2102 arranged in opposite directions cooperate with bidirectional electromagnetic control, which can rotate smoothly in one direction and automatically lock in the reverse direction, effectively preventing the transmission components from reversing and shifting, and avoiding phase misalignment and collision failure of the upper and lower needles.

[0041] In this embodiment:

[0042] During operation, an external current output device energizes one set of electromagnetic blocks 2101 according to the rotation direction. The electromagnetic blocks 2101 generate magnetism and tightly attract the ratchet 2102, causing the ratchet 2102 to rotate synchronously with the upper and lower rods of the second connecting rod 27. The ratchet 2102 and the pawl 2103 maintain a one-way meshing hinge engagement. That is, when rotating in the same direction normally, the pawl 2103 slides smoothly along the tooth surface of the ratchet 2102 without obstructing the normal rotation and differential speed adjustment of the lower needle cylinder 21 and the upper needle plate 3. When subjected to impact, vibration, or sudden load changes that cause a reverse trend, the pawl 2103 immediately locks into the tooth groove of the ratchet 2102, using the one-way limiting self-locking effect to prevent the ratchet 2102 from rotating in the opposite direction, limiting the reverse movement and offset of the upper and lower rods of the second connecting rod 27, preventing the upper and lower needle cylinders 21 and the upper needle plate 3 from reversing and misaligning, ensuring that the upper and lower needles always maintain stable operation in the same direction, avoiding phase reversal, needle position misalignment, interference, and reversal that cause weaving faults such as needle collision, skipped needles, and loop slippage.

[0043] Example 4:

[0044] Please see Figures 6-7 The present invention discloses a differential transmission-based double-sided knitting machine upper and lower needle synchronous alignment adjustment mechanism. Compared with Embodiment 1, this embodiment further includes: an installation mechanism 211, which includes a wear-resistant lining strip 2111 to reduce friction between the knitting needle and the needle groove and maintain needle position accuracy. The wear-resistant lining strip 2111 is equipped with a sliding plate 2112 for insertion and fixing. The sliding plate 2112 is T-shaped to facilitate sliding and limiting with the limiting plate 2119 to avoid installation misalignment. The sliding plate 2112 is provided with a heart-shaped groove 2113, in which a swing rod 2 is installed. The protruding rod 2114 connected to 115, and the swing rod 2115 are used to drive the protruding rod 2114 to slide in the heart-shaped slide groove 2113, which helps to install and engage the wear-resistant liner 2111; the sliding plate 2112 is also connected to the moving plate 2116, and the moving plate 2116 is connected to springs 2117 on both sides. The springs 2117 can generate elastic force to push the sliding plate 2112 and the wear-resistant liner 2111 to lock and fix. The second mounting box 2118 is used to install and fix these components. When the whole is in place, the wear-resistant liner 2111 is installed and fixed, which facilitates subsequent disassembly and replacement.

[0045] In this embodiment:

[0046] When the wear-resistant liner 2111 needs to be installed, it is inserted and fixed to the sliding plate 2112 for initial installation. The T-shaped structure of the sliding plate 2112 and the sliding engagement of the limiting plate 2119 are used to initially limit the wear-resistant liner 2111. The worker pushes the wear-resistant liner 2111, which, through the sliding plate 2112, drives the protruding rod 2114 to slide inside the heart-shaped groove 2113 at the top of the sliding plate 2112. At this time, the swing rod 2115 swings, and the sliding plate 2112 moves synchronously, driving the moving rod 2115 to swing. The moving plate 2116 moves, stretching the spring 2117. The spring 2117 then generates an elastic force, pushing the moving plate 2116 and the sliding plate 2112 in the opposite direction, causing the heart-shaped groove 2113 to engage with the protruding rod 2114. This completes the internal installation of the wear-resistant liner 2111 on the needle groove of the lower needle cylinder 21. Even if the wear-resistant liner 2111 is installed inside the needle groove on the outer wall of the lower needle cylinder 21, it provides a stable sliding track for the knitting needle through the wear-resistant liner 2111, reducing the friction and wear between the knitting needle and the needle groove, maintaining needle position accuracy for a long time, and avoiding needle position deviation, needle collision and other failures caused by needle groove wear.

[0047] This invention provides an improved double-sided knitting machine needle synchronization adjustment mechanism based on differential transmission. It includes a differential speed mechanism 2, which drives a controllable and smooth relative differential rotation between the upper needle plate 3 and the lower needle cylinder 21, smoothly compensating for needle position deviations caused by wear, thermal deformation, and load fluctuations. An alignment mechanism 29 is included, which precisely matches the needle position through mechanical collision limiting via the collision of the first contact block 296 and the second contact block 297, avoiding misalignment and interference between the upper and lower needles and ensuring precise and orderly engagement of the needles after machine startup. A locking mechanism 210 is also included. The ratchet 2103 and ratchet 2102 work together to restrict the upper and lower rods of the second connecting rod 27 from moving in opposite directions, preventing the upper and lower needle cylinders 21 and the upper needle plate 3 from being reversed or misaligned. This ensures that the upper and lower needles always maintain stable operation in the same direction, avoiding phase reversal, needle position misalignment, interference, and reversal that could cause knitting faults such as needle collision, skipped needles, and loop slippage. An installation mechanism 211 is provided, which reduces friction and wear between the needle and the needle groove by setting a detachable and wear-resistant lining block 2111. This maintains needle position accuracy over a long period of time and avoids needle position deviation, needle collision, and other faults caused by needle groove wear.

[0048] The above description shows and illustrates the basic principles, main features, and advantages of the present invention. Standard parts used in the present invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A double-sided machine needle synchronous alignment adjustment mechanism based on differential transmission, comprising a worktable (1), a differential mechanism (2) rotatably connected at the top center of the worktable (1), an upper needle plate (3) fixedly connected to the top of the differential mechanism (2), and a yarn supply machine (4) fixedly connected to the top of the worktable (1). Its features are: The differential mechanism (2) includes a lower syringe (21). The lower syringe (21) is rotatably connected to the top of the worktable (1). A first connecting rod (22) is fixedly connected to the center of the bottom of the lower syringe (21). The outer wall of the first connecting rod (22) is fixedly connected to the center of the inside of the gear (23). A gear set (24) is fixedly connected to the bottom of the first connecting rod (22). The bottom of the gear set (24) is rotatably connected to the mounting plate (25). The bottom of the gear set (24) is fixedly connected to the top output shaft of the first motor (26). The top of the gear (23) is fixedly connected to the first motor (26). A second connecting rod (27) is connected, and the second connecting rod (27) is segmented, specifically composed of two sets of rods that are sleeved on top and bottom. Friction blocks (28) are sleeved on the outer walls of the second connecting rod (27) and the first connecting rod (22), and the friction coefficients of the two sets of friction blocks (28) are different. The upper and lower rods of the second connecting rod (27) are respectively inserted and fixed to the upper and lower slots of the alignment mechanism (29). Two sets of locking mechanisms (210) are fixedly connected to the outer wall of the upper rod of the second connecting rod (27). An installation mechanism (211) is provided inside the needle groove on the outer wall of the lower syringe (21).

2. The double-sided machine needle synchronous alignment adjustment mechanism based on differential transmission according to claim 1, characterized in that: The alignment mechanism (29) includes an electromagnetic clutch (291). The upper and lower rods of the second connecting rod (27) are respectively inserted and fixed to the upper and lower slots of the electromagnetic clutch (291). The left and right sides of the bottom of the lower syringe (21) are fixedly connected to a first mounting box (292). The first mounting box (292) is fixedly connected to a second motor (293). The front output shaft of the second motor (293) is fixedly connected to the gear of the gear plate (294). The top of the gear plate (294) is fixedly connected to a fixing rod (295). The top of the fixing rod (295) is fixedly connected to a first contact block (296). The bottom of the upper needle plate (3) is fixedly connected to a second contact block (297).

3. The double-sided machine needle synchronous alignment adjustment mechanism based on differential transmission according to claim 2, characterized in that: The locking mechanism (210) includes an electromagnetic block (2101). Two sets of electromagnetic blocks (2101) are fixedly connected to the outer wall of the upper rod of the second connecting rod (27). A ratchet (2102) is magnetically attracted to the outer wall of the electromagnetic block (2101). A pawl (2103) is unidirectionally engaged and hinged to the outer wall of the ratchet (2102). The bottom of the pawl (2103) is rotatably connected to the top of the fixed block (2104).

4. The double-sided machine needle synchronous alignment adjustment mechanism based on differential transmission according to claim 3, characterized in that: The mounting mechanism (211) includes a wear-resistant lining strip (2111). The wear-resistant lining strip (2111) is provided inside the needle groove on the outer wall of the lower syringe (21). A sliding plate (2112) is inserted and fixed on the back of the wear-resistant lining strip (2111). A heart-shaped groove (2113) is provided on the top of the sliding plate (2112). A protruding rod (2114) is slidably connected inside the heart-shaped groove (2113). One end of the protruding rod (2114) is fixedly connected to the swing rod (2115). A movable plate (2116) is fixedly connected to the back of the sliding plate (2112). The left and right sides of the front end of the movable plate (2116) are fixedly connected to one end of a spring (2117). The other ends of the two sets of springs (2117) are fixedly connected to the left and right sides of the front end of the second mounting box (2118). A limit plate (2119) is fixedly connected at the center of the front end of the back of the second mounting box (2118).

5. The double-sided machine needle synchronous alignment adjustment mechanism based on differential transmission according to claim 4, characterized in that: The upper needle plate (3) is rotatably connected to the top of the lower syringe (21), and the first motor (26) is fixedly connected to the bottom right end of the mounting plate (25).

6. The double-sided machine needle synchronous alignment adjustment mechanism based on differential transmission according to claim 5, characterized in that: The gear of the gear plate component (294) is rotatably connected to the front end of the first mounting box (292), and the gear plate of the gear plate component (294) is slidably connected to the front end of the first mounting box (292).

7. The double-sided machine needle synchronous alignment adjustment mechanism based on differential transmission according to claim 6, characterized in that: The electromagnetic block (2101) is electrically connected to an external current output device, and the fixed block (2104) is internally fixedly connected to the first connecting rod (22).

8. The double-sided machine needle synchronous alignment adjustment mechanism based on differential transmission according to claim 7, characterized in that: The ratchet (2102) is provided in two sets, and the two sets of ratchet (2102) are arranged in opposite directions.

9. The double-sided machine needle synchronous alignment adjustment mechanism based on differential transmission according to claim 8, characterized in that: The other end of the swing rod (2115) is rotatably connected to the rear side of the bottom inside the second mounting box (2118), and the limiting plate (2119) is slidably connected to the outer wall of the sliding plate (2112).

10. The double-sided machine needle synchronous alignment adjustment mechanism based on differential transmission according to claim 9, characterized in that: The sliding plate (2112) is T-shaped, and the outer wall of the sliding plate (2112) is slidably connected to the front end of the second mounting box (2118).

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