A single-drive, bidirectional adjustable synchronous spiral rotation feeding mechanism

Abstract

This utility model relates to a single-drive, bidirectional, adjustable, synchronous spiral rotating material feeding mechanism, including a frame, a storage rack, a front support arm, a rear support arm, four rotating shafts, two left rotating wheels, and two right rotating wheels, as well as a drive mechanism capable of driving the four rotating shafts to rotate synchronously. The two left rotating wheels and two right rotating wheels are respectively installed at the lower ends of their respective rotating shafts. The front support arm and the rear support arm are arranged parallel to each other on the frame. One pair of right rotating wheels and left rotating wheels are respectively located below the two ends of the front support arm, and another pair of right rotating wheels and left rotating wheels are respectively located below the two ends of the rear support arm. The upper end faces of the left rotating wheels and right rotating wheels are both below the storage channel. The left rotating wheels and right rotating wheels rotate in opposite directions. The left rotating wheels are provided with a left spiral groove, and the right rotating wheels are provided with a right spiral groove. Each of the four rotating shafts is provided with a rotating insert plate, and each rotating insert plate corresponds to the upper starting groove of the corresponding left spiral groove and the upper starting groove of the corresponding right spiral groove.

Description

Technical Field

[0001] This utility model relates to a material feeding mechanism, and more particularly to a single-drive, bidirectional adjustable synchronous spiral rotation material feeding mechanism. Background Technology

[0002] In automated production lines in industries such as food, pharmaceuticals, and daily necessities, stacked pallets (such as plastic pallets and paper trays used to carry products) often need to be separated one by one by a feeding mechanism and transported to the next process (such as filling and packaging). The core function of the feeding mechanism is to achieve precise separation and smooth drop of the pallets, and its performance directly affects the efficiency of the production line and the quality of the products.

[0003] The existing unloading mechanism first uses a baffle inserted into the gap between two adjacent pallets to create a barrier, separating the bottom pallet from the stack of pallets above. Then, a pneumatic suction cup picks up the bottom pallet and transports it to the next process. However, the baffle needs to be precisely matched with the pallet gap. If the gap is not properly controlled (e.g., the gap is too large), the baffle cannot effectively block the stack of pallets above, causing multiple pallets to fall along with the bottom pallet. Moreover, if the pallet surface is uneven, or if the suction cup's airtightness decreases due to wear or aging, an effective seal cannot be formed between the suction cup and the pallet, resulting in insufficient negative pressure. In this case, the bottom pallet may suddenly detach during transport, or tilt or shift due to uneven suction force, eventually colliding with equipment components, causing deformation, or even getting stuck in the unloading channel, interrupting the production line operation. Utility Model Content

[0004] The problem this invention aims to solve is to provide a single-drive, bidirectional, adjustable, synchronous spiral rotating unloading mechanism that can achieve precise separation and stable material unloading. The technical solution adopted is as follows:

[0005] A single-drive, bidirectional, adjustable, synchronous spiral-rotating material feeding mechanism includes a frame and a storage rack. The storage rack is mounted on the frame and has a vertically oriented storage channel. The mechanism further includes a front support arm, a rear support arm, four rotating shafts, two left rotating wheels, and two right rotating wheels, as well as a drive mechanism capable of driving the four rotating shafts to rotate synchronously. The drive mechanism is located on the frame, and the four rotating shafts are rotatably mounted on the frame. The two left rotating wheels and two right rotating wheels are respectively mounted on the lower ends of their respective rotating shafts. The front and rear support arms are arranged parallel to each other on the frame. One right rotating wheel is located below the left end of the front support arm, one left rotating wheel is located below the right end of the front support arm, and the other left rotating wheel is located below the right end of the rear support arm. At the lower left end, another right rotating wheel is located at the lower right end of the rear support arm. The two left rotating wheels and the two right rotating wheels form a material dropping area for the pallet to drop material. The material dropping area is located below the material storage channel and is connected to the lower outlet of the material storage channel. The upper end faces of the two left rotating wheels and the two right rotating wheels are both located below the material storage channel. The rotation direction of the left rotating wheels is opposite to that of the right rotating wheels. The wheel surface of the left rotating wheels is provided with a left spiral groove, and the wheel surface of the right rotating wheels is provided with a right spiral groove. Each of the four rotating shafts is provided with a rotating insert plate that can separate the two lowest adjacent pallets. Each rotating insert plate corresponds to the upper starting groove of the corresponding left spiral groove and the upper starting groove of the corresponding right spiral groove.

[0006] To ensure that the bottom tray of the tray stack can be separated and dropped more stably, the rotation direction of the left rotating wheel is opposite to that of the right rotating wheel. The left rotating wheel rotates clockwise, and the right rotating wheel rotates counterclockwise. The two diagonally opposite rotating wheels rotate in the same direction, and the rotation directions of the front and rear rotating wheels and the left and right rotating wheels are opposite.

[0007] During material unloading, a stack of pallets is first placed into the storage channel. The pallet stack falls under its own weight, with the bottom edge of the lowest pallet supported by the upper surfaces of four rotating wheels, which limit the movement of the entire stack. Then, a drive mechanism drives four rotating shafts to rotate synchronously, causing the left rotating wheel to rotate clockwise and the right rotating wheel to rotate counterclockwise. This causes the rotating insert plate to be inserted into the gap between the two lowest adjacent pallets. Under the rotation of the left and right rotating wheels, the spiral grooves of each rotating wheel create a uniform downward guiding force on the edge of the pallet: the left spiral groove applies a force to the lower right, and the right spiral groove applies a force to the lower left, keeping the pallet horizontal in the unloading area and ensuring that the bottom edge of the pallet falls smoothly along the spiral grooves.

[0008] In a preferred embodiment, the upper ends of each of the rotating insert plates gradually curve upwards along the corresponding left and right spiral grooves. The rotating insert plates are rotated so that their curved upper ends insert into the gap between the edges of the two lowest adjacent trays. During rotation, the edges of the lowest trays are guided into the spiral grooves of each rotating wheel.

[0009] In a preferred embodiment, the storage rack includes four vertically arranged limiting posts, each limiting post forming a rectangular storage channel. The upper ends of the two left rotating wheels and the two right rotating wheels are respectively located below the four corners of the rectangular storage channel. When a stack of pallets is placed in the storage channel, the pallet stack falls under its own weight, with the bottom edge of the lowest pallet supported by the upper ends of the four rotating wheels, thus limiting the position of the entire pallet stack.

[0010] In a further preferred embodiment, the material feeding mechanism further includes a left support arm and a right support arm. The front support arm and the rear support arm are arranged front to back and can be movably mounted on the frame. The front end and rear end of the left support arm are movably mounted on the left end of the front support arm and the left end of the rear support arm, respectively. The front end and rear end of the right support arm are movably mounted on the right end of the front support arm and the right end of the rear support arm, respectively. The storage rack further includes four adjusting arms corresponding to the limiting posts. The four adjusting arms are movably mounted on the front support arm, the left support arm, the rear support arm, and the right support arm, respectively. The four limiting posts are respectively mounted on the inner ends of the corresponding adjusting arms. Since the front support arm, the rear support arm, the left support arm, the right support arm, and each adjusting arm are all movable, the size of the storage channel can be adjusted by adjusting the distance between the support arms, so that the storage channel can accommodate pallet stacks of different sizes. In one specific embodiment, the moving structures of the aforementioned front and rear support arms can each employ a structure consisting of two support rods, two linear bearings, and two sliding seats. The two support rods are mounted side-by-side on the frame, the two linear bearings are respectively fitted onto their respective support rods, and the two sliding seats are respectively mounted on the linear bearings. The two ends of the front support arm or the two ends of the rear support arm are respectively mounted on the two sliding seats. The moving structures of the aforementioned left, right, and adjusting arms can each employ a structure consisting of strip-shaped through holes, locking bolts, and threaded holes. The left, right, and adjusting arms are all provided with strip-shaped through holes, and the front, rear, left, and right support arms are all provided with threaded holes. The shank of the locking bolt passes through the corresponding strip-shaped through hole and engages with the threaded hole. These moving structures are all existing technologies and will not be described in detail here.

[0011] In a preferred embodiment, the drive mechanism includes a drive motor, a main drive shaft, a front drive shaft, a rear drive shaft, two main commutators, two front commutators, and two rear commutators. The main drive shaft runs longitudinally and is rotatably mounted on the frame. The drive motor is mounted on the frame, and its power output shaft is connected to the main drive shaft. The input ends of both main commutators are mounted on the main drive shaft. One end of the front drive shaft is connected to the output end of the front commutator, and one end of the rear drive shaft is connected to the output end of the rear commutator. Both the front and rear drive shafts are perpendicular to the main drive shaft. The input ends of both front commutators are mounted on the front drive shaft, and the two rotating shafts are arranged vertically and mounted on the output ends of the two front commutators, respectively. The input ends of both rear commutators are mounted on the rear drive shaft, and the other two rotating shafts are arranged vertically and mounted on the output ends of the two rear commutators, respectively. Through multi-stage transmission via the main drive shaft, multiple commutators, and the front and rear drive shafts, a single drive motor can drive four rotating wheels to rotate synchronously. This ensures that the left and right rotating wheels rotate in opposite directions (left clockwise, right counterclockwise) and that the diagonal rotating wheels rotate in the same direction. This avoids disordered separation / discharge actions caused by speed differences due to multiple drives, ensures that the timing of the rotating insert plate insertion and the guiding force of the spiral groove are perfectly matched, and improves the discharge accuracy.

[0012] In a further preferred embodiment, locking sleeves are respectively fitted onto the four rotating shafts, with each locking sleeve positioned above the corresponding left and right rotating wheels. The inner wall of each locking sleeve is tightly fitted to the outer wall of the corresponding rotating shaft. Each rotating insert plate has a first through hole at its center, and each rotating insert plate is fitted onto the corresponding rotating shaft through the first through hole. Furthermore, each rotating insert plate is fixedly connected to the lower end face of the corresponding locking sleeve. The aforementioned left and right rotating wheels and corresponding rotating insert plates are fixed to their respective rotating shafts. The rotating insert plates can adjust their phase angle relative to the corresponding left and right rotating wheels by being driven by the locking sleeves.

[0013] In a further preferred embodiment, the locking sleeve has a through-hole threaded hole, into which a locking bolt is installed. The end of the locking bolt abuts against the outer wall of the corresponding rotating shaft. The tight fit between the end of the locking bolt and the outer wall of the rotating shaft rigidly fixes the locking sleeve to the rotating shaft, preventing axial or circumferential displacement of the rotating insert plate during high-speed rotation or under stress. This ensures precise insertion of the rotating insert plate into the tray gap and avoids separation failure due to loosening. The rotating insert plate is fixed to the rotating shaft by the locking sleeve. After loosening the locking bolt, the phase of the rotating insert plate (i.e., the relative position of the rotating insert plate and the starting groove of the spiral groove) can be adjusted around the rotating shaft to accommodate trays of different thicknesses. This allows for compatibility with multiple specifications without replacing parts, enhancing versatility.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] This invention uses a single drive to adjust the four rotating wheels to rotate synchronously in both directions, so that the rotating insert plate can be precisely and synchronously inserted into the gap between the two adjacent bottom trays. Through mechanical limiting, the bottom tray is completely separated from the upper tray stack, and the edge of the bottom tray falls smoothly along the spiral groove. It can stably achieve single tray separation, greatly improve the separation accuracy of the trays, ensure the stability of material falling, and reduce jamming and deformation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention;

[0017] Figure 2 for Figure 1 A three-dimensional view viewed from below;

[0018] Figure 3 for Figure 1 A bottom view;

[0019] Figure 4 for Figure 2 A schematic diagram of a central storage channel equipped with pallet stacks;

[0020] Figure 5 This is a schematic diagram of the structure of the right rotating wheel in a preferred embodiment of the present invention;

[0021] Figure 6 for Figure 5 Cross-sectional view of AA. Detailed Implementation

[0022] The following description, in conjunction with the accompanying drawings and preferred embodiments of the present invention, will provide further details.

[0023] like Figure 1-6As shown, the single-drive, bidirectional adjustable, synchronous spiral rotating material feeding mechanism in this embodiment includes a frame 1, a storage rack 2, a front support arm 3, a rear support arm 4, four rotating shafts 5, two left rotating wheels 6 and two right rotating wheels 7, and a drive mechanism 8 capable of driving the four rotating shafts 5 to rotate synchronously. The storage rack 2 is mounted on the frame 1 and has a vertically oriented storage channel 21. The drive mechanism 8 is located on the frame 1. The four rotating shafts 5 are rotatably mounted on the frame 1, and the two left rotating wheels 6 and two right rotating wheels 7 are respectively mounted on the lower ends of the corresponding rotating shafts 5. The front support arm 3 and the rear support arm 4 are arranged parallel to each other on the frame 1. One right rotating wheel 7 is located below the left end of the front support arm 3, one left rotating wheel 6 is located below the right end of the front support arm 3, and the other left rotating wheel 6 is located below the left end of the rear support arm 4. Below the end, another right rotating wheel 7 is located below the right end of the rear support arm 4. The two left rotating wheels 6 and the two right rotating wheels 7 form a material dropping area 8 for the pallet to drop material. The material dropping area 8 is located below the storage channel 21 and is connected to the lower outlet of the storage channel 21. The upper end faces of the two left rotating wheels 6 and the two right rotating wheels 7 are both located below the storage channel 21. The rotation direction of the left rotating wheel 6 is opposite to that of the right rotating wheel 7. The wheel surface of the left rotating wheel 6 is provided with a left spiral groove 61, and the wheel surface of the right rotating wheel 7 is provided with a right spiral groove 71. Each of the four rotating shafts 5 is provided with a rotating insert 9 that can separate the two lowermost adjacent pallets. Each rotating insert 9 corresponds to the upper starting groove of the corresponding left spiral groove 61 and the upper starting groove of the corresponding right spiral groove 71.

[0024] In order to make the bottom tray 12 of the tray stack more stably separate and fall, the rotation direction of the left rotating wheel 6 is opposite to that of the right rotating wheel 7. The left rotating wheel 6 rotates clockwise and the right rotating wheel 7 rotates counterclockwise. The two diagonal rotating wheels rotate in the same direction, and the rotation directions of the front and rear rotating wheels and the left and right rotating wheels are opposite.

[0025] During material unloading, a stack of pallets is first placed into the storage channel 21. The pallet stack falls under its own weight, with the bottom edge of the lowest pallet 12 supported by the upper surfaces of four rotating wheels, which limit the entire stack of pallets. Then, a drive mechanism 8 drives four rotating shafts 5 to rotate synchronously, causing the left rotating wheel 6 to rotate clockwise and the right rotating wheel 7 to rotate counterclockwise. This causes the rotating insert 9 to be inserted into the gap between the two lowest adjacent pallets 12. Under the rotation of the left rotating wheel 6 and the right rotating wheel 7, the spiral grooves of each rotating wheel form a uniform downward guiding force on the edge of the pallet 12: the left spiral groove 61 applies a force to the lower right, and the right spiral groove 71 applies a force to the lower left, so that the pallet 12 always maintains a horizontal posture in the unloading area 8, and the edge of the lowest pallet 12 falls smoothly along the spiral groove.

[0026] The upper ends of each of the rotating insert plates 9 gradually curve upwards along the corresponding left spiral groove 61 and right spiral groove 71. The rotating insert plates 9 are rotated so that their curved upper ends are inserted into the gap between the edges of the two lowest adjacent trays 12. During rotation, the edges of the lowest trays 12 are guided into the spiral grooves of each rotating wheel.

[0027] The storage rack 2 includes four vertically arranged limiting posts 22, each limiting post 22 forming a rectangular cross-section of the storage channel 21 (e.g., Figure 3 As shown, the upper surfaces of the two left rotating wheels 6 and the two right rotating wheels 7 are respectively located below the four corners of the rectangular storage channel 21. When the entire stack of pallets is placed in the storage channel 21, the pallet stack falls under its own weight, and the bottom edge of the lowest pallet is supported by the upper surfaces of the four rotating wheels, which limit the position of the entire pallet stack.

[0028] The material feeding mechanism also includes a left support arm 10 and a right support arm 11. The front support arm 3 and the rear support arm 4 are arranged front to back and can be movably mounted on the frame 1. The front end and rear end of the left support arm 10 are movably mounted on the left end of the front support arm 3 and the left end of the rear support arm 4, respectively. The front end and rear end of the right support arm 11 are movably mounted on the right end of the front support arm 3 and the right end of the rear support arm 4, respectively. The storage rack 2 also includes four adjusting arms 23 corresponding to the limiting posts 22. The four adjusting arms 23 are movably mounted on the front support arm 3, the left support arm 10, the rear support arm 4, and the right support arm 11, respectively. The four limiting posts 22 are respectively mounted on the inner ends of the corresponding adjusting arms 23. Since the front support arm 3, the rear support arm 4, the left support arm 10, the right support arm 11, and each adjusting arm 23 are all movable, the size of the storage channel 21 can be adjusted by adjusting the distance between each support arm, so that the storage channel 21 can accommodate pallet stacks of different sizes. In one specific embodiment, the moving structures of the aforementioned front support arm 3 and rear support arm 4 can both employ a structure consisting of two support rods, two linear bearings, and two sliding seats. The two support rods are mounted side-by-side on the frame 1, the two linear bearings are respectively fitted onto the corresponding support rods, and the two sliding seats are respectively mounted on the linear bearings. The two ends of the front support arm 3 or the two ends of the rear support arm 4 are respectively mounted on the two sliding seats. The moving structures of the aforementioned left support arm 10, right support arm 11, and adjusting arm 23 can all employ a structure consisting of a strip-shaped through hole, a locking bolt 512, and a screw hole 511. The left support arm 10, right support arm 11, and adjusting arm 23 are all provided with strip-shaped through holes, and the front support arm 3, rear support arm 4, left support arm 10, and right support arm 11 are all provided with screw holes 511. The rod portion of the locking bolt 512 passes through the corresponding strip-shaped through hole and engages with the screw hole 511. These moving structures are all existing technologies and will not be described in detail here.

[0029] The drive mechanism 8 includes a drive motor 81, a main drive shaft 82, a front drive shaft 83, a rear drive shaft 84, two main commutators 85, two front commutators 86, and two rear commutators 87. The main drive shaft 82 runs longitudinally and is rotatably mounted on the frame 1. The drive motor 81 is mounted on the frame 1, and the power output shaft of the drive motor 81 is connected to the main drive shaft 82. The input ends of the two main commutators 85 are both mounted on the main drive shaft 82. One end of the front drive shaft 83 is connected to the main commutator 85 located at the front. The output ends are connected, with one end of the rear drive shaft 84 connected to the output end of the main commutator 85 located at the rear. The front drive shaft 83 and the rear drive shaft 84 are both perpendicular to the main drive shaft 82. The input ends of the two front commutators 86 are mounted on the front drive shaft 83, and the two rotating shafts 5 are arranged vertically and respectively mounted on the output ends of the two front commutators 86. The input ends of the two rear commutators 87 are mounted on the rear drive shaft 84, and the other two rotating shafts 5 are arranged vertically and respectively mounted on the output ends of the two rear commutators 87. Through the multi-stage transmission of the main drive shaft 82, multiple commutators, front drive shaft 83 and rear drive shaft 84, a single drive motor 81 can drive the four rotating wheels to rotate synchronously, ensuring that the left and right rotating wheels 7 rotate in opposite directions (left clockwise, right counterclockwise), and the diagonal rotating wheels rotate in the same direction. This avoids the disorder of separation / discharge actions caused by the speed difference of multiple drives, ensures that the timing of the insertion of the rotating insert plate 9 and the guiding force of the spiral groove are perfectly matched, and improves the discharge accuracy.

[0030] Each of the four rotating shafts 5 is fitted with a locking sleeve 51, with each locking sleeve 51 positioned above the corresponding left rotating wheel 6 and right rotating wheel 7. The inner wall of each locking sleeve 51 is tightly fitted with the outer wall of the corresponding rotating shaft 5. Each rotating insert 9 has a first through hole 91 at its center, and each rotating insert 9 is fitted onto the corresponding rotating shaft 5 through the first through hole 91. Furthermore, each rotating insert 9 is fixedly connected to the lower end face of the corresponding locking sleeve 51. The aforementioned left rotating wheel 6, right rotating wheel 7, and corresponding rotating insert 9 are fixed to the corresponding rotating shaft 5. The rotating insert 9 can adjust its phase angle relative to the corresponding left rotating wheel 6 and right rotating wheel 7 by being driven by the locking sleeve 51.

[0031] The locking sleeve 51 has a through screw hole 511, into which a locking bolt 512 is installed. The end of the shank of the locking bolt 512 abuts against the outer wall of the corresponding rotating shaft 5. The tight fit between the end of the locking bolt 512 and the outer wall of the rotating shaft 5 rigidly fixes the locking sleeve 51 to the rotating shaft 5, preventing axial or circumferential displacement of the rotating insert 9 during high-speed rotation or under stress. This ensures the rotating insert 9 is accurately inserted into the tray gap and avoids separation failure due to loosening. The rotating insert 9 is fixed to the rotating shaft 5 by the locking sleeve 51. After loosening the locking bolt 512, the phase of the rotating insert 9 (i.e., the relative position of the rotating insert 9 and the starting groove of the spiral groove) can be adjusted around the rotating shaft 5 to accommodate trays of different thicknesses. This allows for compatibility with multiple specifications without replacing parts, enhancing versatility.

[0032] Furthermore, it should be noted that the names of the various parts of the specific embodiments described in this specification may differ. All equivalent or simple variations made to the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, they should all fall within the protection scope of this utility model.

Claims

1. A single drive bidirectional adjustable synchronous spiral rotation blanking mechanism, comprising a frame and a storage rack, the storage rack is installed on the frame, and a storage channel running up and down is arranged on the storage rack; characterized in that: It also includes a front support arm, a rear support arm, four rotating shafts, two left rotating wheels and two right rotating wheels, and a drive mechanism capable of driving the four rotating shafts to rotate synchronously; the drive mechanism is mounted on the frame, the four rotating shafts are rotatably mounted on the frame, and the two left rotating wheels and two right rotating wheels are respectively mounted on the lower end of the corresponding rotating shafts; the front support arm and the rear support arm are arranged parallel to each other on the frame, one right rotating wheel is located below the left end of the front support arm, one left rotating wheel is located below the right end of the front support arm, another left rotating wheel is located below the left end of the rear support arm, and another right rotating wheel is located below the right end of the rear support arm; the two left rotating wheels and... The two right-hand rotating wheels form a material dropping area for pallets to drop materials. The material dropping area is located below the material storage channel and is connected to the lower outlet of the material storage channel. The upper surfaces of the two left-hand rotating wheels and the two right-hand rotating wheels are both located below the material storage channel. The rotation direction of the left-hand rotating wheels is opposite to that of the right-hand rotating wheels. The wheel surface of the left-hand rotating wheels is provided with a left spiral groove, and the wheel surface of the right-hand rotating wheels is provided with a right spiral groove. Each of the four rotating shafts is provided with a rotating insert plate that can separate the two lowest adjacent pallets. Each rotating insert plate corresponds to the upper starting groove of the corresponding left spiral groove and the upper starting groove of the corresponding right spiral groove.

2. The single drive bidirectional adjustable synchronous helical rotation blank holder mechanism according to claim 1, wherein: The upper ends of each of the rotating inserts gradually curve upwards along the corresponding left and right spiral grooves.

3. The single drive bidirectional adjustable synchronous helical rotation blank holder mechanism according to claim 1, wherein: The storage rack includes four vertically arranged limiting posts, each limiting post forming a storage channel with a rectangular cross-section. The upper ends of the two left rotating wheels and the upper ends of the two right rotating wheels are respectively located below the four corners of the rectangular storage channel.

4. The single drive bidirectional adjustable synchronous helical rotation blank holder mechanism according to claim 3, wherein: The material feeding mechanism also includes a left support arm and a right support arm. The front support arm and the rear support arm are arranged in a front-to-back configuration and can be movably mounted on the frame. The front end and rear end of the left support arm are movably mounted on the left end of the front support arm and the left end of the rear support arm, respectively. The front end and rear end of the right support arm are movably mounted on the right end of the front support arm and the right end of the rear support arm, respectively. The storage rack also includes four adjusting arms corresponding to the limiting posts. The four adjusting arms are movably mounted on the front support arm, the left support arm, the rear support arm, and the right support arm, respectively. The four limiting posts are respectively mounted on the inner ends of the corresponding adjusting arms.

5. The single drive bidirectional adjustable synchronous helical rotation blank holder mechanism according to claim 1, wherein: The drive mechanism includes a drive motor, a main drive shaft, a front drive shaft, a rear drive shaft, two main commutators, two front commutators, and two rear commutators. The main drive shaft runs front-to-back and is rotatably mounted on the frame. The drive motor is mounted on the frame, and its power output shaft is connected to the main drive shaft. The input ends of the two main commutators are mounted on the main drive shaft. One end of the front drive shaft is connected to the output end of the main commutator located at the front, and one end of the rear drive shaft is connected to the output end of the main commutator located at the rear. Both the front and rear drive shafts are perpendicular to the main drive shaft. The input ends of the two front commutators are mounted on the front drive shaft. The two rotating shafts are arranged vertically and are respectively mounted on the output ends of the two front commutators. The input ends of the two rear commutators are mounted on the rear drive shaft, and the other two rotating shafts are arranged vertically and are respectively mounted on the output ends of the two rear commutators.

6. The single drive bi-directional adjustable synchronous helical rotation blank holder mechanism of claim 5, wherein: Locking sleeves are respectively fitted on the four rotating shafts. Each locking sleeve is located above the corresponding left rotating wheel and right rotating wheel. The inner wall of each locking sleeve is tightly fitted with the outer wall of the corresponding rotating shaft. Each rotating insert plate has a first through hole at its center. Each rotating insert plate is fitted onto the corresponding rotating shaft through the first through hole, and each rotating insert plate is fixedly connected to the lower end face of the corresponding locking sleeve.

7. The single-drive, bidirectional adjustable synchronous spiral rotation feeding mechanism according to claim 6, characterized in that: The locking sleeve has a through screw hole, and a locking bolt is installed in the screw hole. The end of the locking bolt abuts against the outer wall of the corresponding rotating shaft.

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