A hosiery packer

Abstract

The application discloses a sock packing machine, which comprises a sock conveying belt, a weighing sensor, an in-box conveying belt, a transfer unit, a plurality of clamping units and a triggering unit. The transfer unit comprises a base, a rotating disc and a plurality of placing grooves. The rotating disc is rotatably installed on the base. The placing grooves are circumferentially and interval arranged on the rotating disc and are provided with the weighing sensor at the bottom. The clamping units are interval arranged on the rotating disc and comprise a fixed tube, an extension tube, a self-resetting contact and a rotating driving part. The extension tube is slidingly inserted into the fixed tube and is provided with a fixed clamping plate at the outer end. The rotating driving part drives the turnover clamping plate to open and close with the fixed clamping plate. The triggering unit is used for triggering the clamping unit to act. In working, the rotating disc rotates to the position corresponding to the in-box conveying belt. The triggering unit activates the clamping unit. The self-resetting contact controls the extension tube to extend. The rotating driving part drives the turnover clamping plate to close with the fixed clamping plate to clamp the empty box. After being transferred to the placing groove, the turnover clamping plate is separated from the fixed clamping plate. The weighing sensor weighs the socks in the box. The structure realizes automatic transfer and accurate weighing of the empty box and improves the packing efficiency.

Description

Technical Field

[0001] This invention relates to the field of sock production equipment technology, specifically to a sock packaging machine. Background Technology

[0002] Packaging is an indispensable part of sock production. Automating packaging can significantly improve production efficiency. In the prior art, authorized invention CN108725525A discloses an automatic sock packaging machine, which includes a feeding conveyor belt, a packaging table, and a boxing mechanism. The feeding conveyor belt transports socks to the packaging table, and the boxing mechanism packs the socks into packaging boxes. However, during the transfer of empty boxes, this packaging machine relies on manual assistance or a complex robotic arm to grab and place empty boxes, which not only increases labor or equipment costs, but also results in low accuracy and efficiency in transferring empty boxes. At the same time, the coordination between its weighing device and the boxing mechanism is not smooth enough, often resulting in weighing delays or inaccuracies, which affects the overall packaging progress. Summary of the Invention

[0003] The present invention aims to solve one of the technical problems existing in the prior art.

[0004] This application provides a sock packing machine, including a sock feeding conveyor belt and a weighing sensor, as well as a box feeding conveyor belt, a transfer unit, several clamping units, and a triggering unit. The transfer unit includes a base, a rotating disk, and several placement slots. The rotating disk is rotatably mounted on the base, and several placement slots are arranged at intervals around its perimeter. A weighing sensor is installed at the bottom of each placement slot. Each clamping unit is placed at intervals on the rotating disk. The triggering unit triggers the corresponding clamping unit of the box feeding conveyor belt to move the empty box from the box feeding conveyor belt to the placement slot.

[0005] The clamping unit includes a pair of fixed tubes, a pair of telescopic tubes, and a self-resetting contact. The fixed tubes are fixed on the rotating disk, and the telescopic tubes are slidably inserted into the fixed tubes. The inner end of the telescopic tube is fixedly connected to the self-resetting contact, and the outer end is fixedly fitted with a fixed clamping plate. A flipping clamping plate that opens and closes relative to the fixed clamping plate is also movably installed in the telescopic tube through a rotary drive. The rotary drive is used to make the flipping clamping plate close with the fixed clamping plate to clamp the packaging box when the telescopic tube extends radially along the rotating disk until the packaging box is moved into the placement slot and the flipping clamping plate separates from the fixed clamping plate. The self-resetting contact is used to cooperate with the triggering unit to control the sliding of the telescopic tube in the fixed tube.

[0006] The rotary drive component includes a rotary shaft, a circumferential elastic component, a spiral groove, and a transmission block. The rotary shaft is rotatably installed in the telescopic tube, the transmission block is fixed at the inner end of the circumferential wall, and the flipping clamp is fixed at the outer end of the circumferential wall. The circumferential elastic component is used to apply torsional force to the rotary shaft. An arc groove is opened at the inner end of the rotary shaft, and the spiral groove is set in the inner wall of the fixed cylinder. The transmission block slides in cooperation with the arc groove and the spiral groove.

[0007] The spiral groove includes an extension section, a rotating section, a retracting section, a reset section, and a check valve. The extension section and the retracting section are parallel. The rotating section extends circumferentially along the telescopic tube and connects the front ends of the extension section and the retracting section. The reset section is inclined and connects the inner ends of the extension section and the retracting section. It is used to guide the transmission block from the retracting section into the extension section when the telescopic tube retracts. The check valve is used to prevent the transmission block in the extension section from entering the retracting section via the reset section.

[0008] The anti-reverse component includes a limiting groove, a limiting block, and a pre-tightening spring. The groove is opened on the inner wall of the fixed tube, with one end connected to the reset section. The limiting block is slidably inserted in the limiting groove and the reset section, with a pre-tightening spring at its inner end and its outer end inclined towards the retraction section.

[0009] The circumferential elastic component includes a mounting ring groove, a baffle plate, a rotary arc groove, and a torsion spring. The mounting ring groove is located on the circumferential wall of the rotating shaft, and the rotary arc groove is located on the inner wall of the telescopic tube. The baffle plate is fixed to the top of the mounting ring groove and slides with one end of it. The torsion spring is sleeved in the mounting ring groove and abuts against the baffle plate and the rotary arc groove at both ends, respectively, to apply torque to the rotating shaft, so that the transmission block at the outer end of the extended section passes through the rotating section and enters the retracted section, and the fixed clamp and the flipping clamp close.

[0010] The free ends of a pair of flip-up clamps face inwards towards each other.

[0011] The self-resetting contact includes a contact plate, a pair of connecting rods, and a pair of return springs. The two ends of the contact plate are fixedly connected to each connecting rod, and the other end of the pair of connecting rods is fixedly connected to the inner end of the telescopic tube. The pair of return springs are respectively sleeved on the outside of each connecting rod, and their two ends abut against the contact plate and the inner end of the fixed tube.

[0012] The triggering unit includes a rotating sleeve, a fixed shell, an upper gear, and a rack. The rotating sleeve is fixed at the center of the rotating disk, the fixed shell is fixed on the base and rotates with the rotating sleeve, and the rack is slidably mounted on the top of the fixed shell. The gear is driven by a motor and meshes with the rack.

[0013] It also includes a gear ring and a lower gear. The gear ring is set on the circumferential wall of the rotating sleeve, and the lower gear meshes with the gear ring through a motor drive.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. Empty box transfer: Existing technologies rely on manual assistance or complex robotic arms. This application achieves automated transfer of empty boxes from the box inlet conveyor belt to the placement slot through the cooperation of clamping unit, triggering unit and transfer unit. No manual intervention is required, which reduces labor costs. The structure is relatively simple, which reduces equipment costs. At the same time, the precise movement of clamping unit ensures high accuracy and high efficiency of empty box transfer.

[0016] 2. Regarding the coordination between weighing and packing: Existing weighing devices and packing mechanisms do not coordinate well, often resulting in weighing delays or inaccuracies. In this application, the weighing sensor at the bottom of the placement slot is directly installed in the placement slot of the transfer unit. When the socks are put into the box, they can be weighed immediately, and the weighing is coordinated with the action of the clamping unit, avoiding weighing delays, improving weighing accuracy, and ensuring the overall packing progress.

[0017] 3. In terms of operational reliability: This application ensures the stable and reliable opening and closing of the flipping clamp and the fixed clamp in the clamping unit by coordinating the various sections of the return groove, setting the anti-reverse component, and using the circumferential elastic component, thereby further improving the stability of equipment operation.

[0018] 4. Self-resetting performance: The design of the self-resetting contact allows the telescopic tube to accurately return to its initial state after each clamping action, ensuring the continuity and rhythm of the clamping unit's actions and improving the overall operating efficiency of the equipment. Attached Figure Description

[0019] Figure 1 This is a perspective view of the sock packing machine in the embodiments of this application;

[0020] Figure 2 This is a perspective view (vertically cut along the middle) of the sock packing machine in an embodiment of this application.

[0021] Figure 3 This is a perspective view of the trigger unit in an embodiment of this application;

[0022] Figure 4 This is a perspective view of the clamping unit in an embodiment of this application;

[0023] Figure 5 This is a perspective view of the clamping unit in an embodiment of this application (cut along the axis from the center).

[0024] Figure 6 This is a perspective view of the clamping unit in an embodiment of this application (cut along the central vertical axis).

[0025] Figure 7 This is a perspective view of the fixed cylinder in an embodiment within this community (cut along the axis from the center).

[0026] Figure Labels

[0027] 1-Sock conveyor belt, 2-Weighing sensor, 3-Box infeed conveyor belt, 4-Transfer unit, 41-Base, 42-Rotating disk, 43-Placement slot, 5-Clamping unit, 51-Fixing tube, 52-Telescopic tube, 53-Self-resetting contact, 531-Contact plate, 532-Connecting rod, 533-Reset spring, 54-Fixing clamping plate, 55-Flipping clamping plate, 6-Trigger unit, 61-Rotating sleeve, 62-Fixing shell, 63-Upper gear 64-Rack, 7-Rotary drive component, 71-Rotary shaft, 72-Circumferential elastic component, 721-Mounting ring groove, 722-Blocking plate, 723-Rotary arc groove, 724-Torsion spring, 73-U-shaped groove, 731-Extending section, 732-Rotating section, 733-Retracting section, 734-Reset section, 74-Transmission block, 8-Isolation component, 81-Limiting slide groove, 82-Limiting block, 83-Preload spring, 9-Gear ring, 10-Lower gear. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0029] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0030] The sock packing machine provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0031] Example 1:

[0032] This application provides a sock packaging machine, including a sock conveyor belt 1 and a weighing sensor 2, as well as a box-feeding conveyor belt 3, a transfer unit 4, several clamping units 5, and a triggering unit 6. The transfer unit 4 includes a base 41, a rotating disk 42, and several placement slots 43. The rotating disk 42 is rotatably mounted on the base 41, and several placement slots 43 are spaced apart on its periphery. A weighing sensor 2 is provided at the bottom of each placement slot 43. Each clamping unit 5 is spaced apart on the rotating disk 42. The triggering unit 6 triggers the corresponding clamping unit 5 of the box-feeding conveyor belt 3 to move the empty box from the box-feeding conveyor belt 3 into the placement slot 43.

[0033] In this embodiment of the application, the clamping unit 5 includes a pair of fixed tubes 51, a pair of telescopic tubes 52, and a self-resetting contact 53. The fixed tubes 51 are fixed on the rotating disk 42. The telescopic tubes 52 are slidably inserted into the fixed tubes 51, with their inner ends fixed to the self-resetting contact 53 and their outer ends fixed to a fixed clamping plate 54. A flipping clamping plate 55, which opens and closes relative to the fixed clamping plate 54, is also movably installed in the telescopic tubes 52 through a rotation drive 7. The rotation drive 7 is used to make the flipping clamping plate 55 close with the fixed clamping plate 54 to clamp the packaging box when the telescopic tubes 52 extend radially along the rotating disk 42, until the packaging box is moved into the placement slot 43 and the flipping clamping plate 55 separates from the fixed clamping plate 54. The self-resetting contact 53 is used to cooperate with the triggering unit 6 to control the telescopic tubes 52 to slide in the fixed tubes 51.

[0034] In this embodiment of the application, the rotary drive 7 includes a rotary shaft 71, a circumferential elastic member 72, a loop groove 73, and a transmission block 74. The rotary shaft 71 is rotatably installed in the telescopic tube 52, the transmission block 74 is fixed at the inner end of the circumferential wall, and the flipping clamp 55 is fixed at the outer end of the circumferential wall. The circumferential elastic member 72 is used to apply torsional force to the rotary shaft 71. An arc groove is opened at the inner end of the rotary shaft 71, and the loop groove 73 is provided on the inner wall of the fixed cylinder. The transmission block 74 slides in cooperation with the arc groove and the loop groove 73.

[0035] In this embodiment of the application, the free ends of a pair of flip plates 55 face each other inward.

[0036] like Figures 1 to 7As shown, due to the above structure, when the sock packaging machine starts working, the sock conveyor belt 1 transports the socks to the designated position, while the box conveyor belt 3 transports empty packaging boxes. The rotating disk 42 rotates on the base 41, and several placement slots 43 on its periphery rotate synchronously with the rotating disk 42. When a placement slot 43 rotates to the position corresponding to the box conveyor belt 3, the trigger unit 6 is activated, which in turn triggers the clamping unit 5 at the corresponding position to start operating. Under the action of the trigger unit 6, the self-resetting contact 53 of the clamping unit 5 controls the telescopic tube 52 to slide radially outward along the rotating disk 42 in the fixed tube 51. During the sliding process of the telescopic tube 52, the rotation drive 7 starts working: the rotating shaft 71 rotates because the transmission block 74 is in the loop groove 73 and the arc groove. The sliding mechanism causes rotation, and the circumferential elastic element 72 applies a torsional force to the rotating shaft 71. When the telescopic tube 52 extends outward to a certain extent, under the action of the rotation drive element 7, the flipping clamp 55, which is fixed to the outer end of the rotating shaft 71, rotates towards the fixed clamp 54. Finally, the two close together, clamping the empty box on the box conveyor belt 3. Subsequently, as the rotating disk 42 continues to rotate and the telescopic tube 52 moves appropriately, the clamped empty box is smoothly transferred from the box conveyor belt 3 to the corresponding placement slot 43. When the empty box arrives in the placement slot 43, the rotation drive element 7 separates the flipping clamp 55 from the fixed clamp 54, releasing the empty box. At this time, the weighing sensor 2 at the bottom of the placement slot 43 starts to work, which can weigh and measure the socks subsequently loaded into the box.

[0037] Example 2:

[0038] The difference from Embodiment 1 is that, in this embodiment, in addition to the structural features of the aforementioned embodiments, the loop groove 73 includes an extension section 731, a rotating section 732, a retracting section 733, a reset section 734, and a check member 8. The extension section 731 is parallel to the retracting section 733. The rotating section 732 extends circumferentially along the telescopic tube 52 and connects the front ends of the extension section 731 and the retracting section 733. The reset section 734 is obliquely connected to the inner ends of the extension section 731 and the retracting section 733 and is used to guide the transmission block 74 from the retracting section 733 into the extension section 731 when the telescopic tube 52 retracts. The check member is used to prevent the transmission block 74 in the extension section 731 from entering the retracting section 733 via the reset section 734.

[0039] In this embodiment of the application, the anti-reverse component 8 includes a limiting groove 81, a limiting block 82, and a pre-tightening spring 83. The groove is formed on the inner wall of the fixed tube 51, with one end connected to the reset section 734. The limiting block 82 is slidably inserted in the limiting groove 81 and the reset section 734, with the pre-tightening spring 83 at its inner end and the outer end inclined towards the retraction section 733.

[0040] In this embodiment of the application, the circumferential elastic member 72 includes a mounting ring groove 721, a blocking plate 722, a rotary arc groove 723, and a torsion spring 724. The mounting ring groove 721 is disposed on the circumferential wall of the rotating shaft 71, and the rotary arc groove 723 is disposed on the inner wall of the telescopic tube 52. The blocking plate 722 is fixed to the top of the mounting ring groove 721 and one end is slidably engaged with the rotary arc groove 723. The torsion spring 724 is sleeved in the mounting ring groove 721 and its two ends abut against the blocking plate 722 and the rotary arc groove 723, respectively, to apply torque to the rotating shaft 71, so that the transmission block 74 at the outer end of the protruding section 731 passes through the rotating section 732 and enters the retracting section 733, and the fixed clamping plate 54 and the flipping clamping plate 55 close.

[0041] like Figure 7 As shown, due to the above-mentioned structure, the special structure of the loop groove 73 further optimizes the action accuracy and reliability of the clamping unit 5. When the telescopic tube 52 extends radially outward along the rotating disk 42, the transmission block 74 moves along the extension section 731 of the loop groove 73. When the transmission block 74 reaches the outer end of the extension section 731, it enters the rotating section 732. Under the guidance of the rotating section 732, the transmission block 74 drives the rotating shaft 71 to rotate. At the same time, the circumferential elastic element 72 (the cooperation of the mounting ring groove 721, the blocking plate 722, the rotary arc groove 723, and the torsion spring 724) applies torque to the rotating shaft 71, so that the flipping clamping plate 55 and the fixed clamping plate 54 can be smoothly closed to clamp the packaging box. After that, the transmission block 74 enters the retraction section 733. As the telescopic tube 52 retracts, the transmission block 74 moves inward along the retraction section 733. When the transmission block 74 reaches the inner end of the retraction section 733, it enters the return section 733. The inclined structure of the positioning segment 734 and the reset segment 734 guides the transmission block 74 from the retraction segment 733 into the extension segment 731, preparing for the next clamping action. During this process, the anti-reverse component 8 plays an important role: under the action of the pre-tension spring 83, the outer end of the limiting block 82 extends to the vicinity of the connection between the reset segment 734 and the extension segment 731. Since the outer end of the limiting block 82 is inclined towards the retraction segment 733, when the transmission block 74 enters the extension segment 731 from the retraction segment 733 via the reset segment 734, it can smoothly push the limiting block 82 open; while when the transmission block 74 is located in the extension segment 731, the limiting block 82 can prevent it from entering the retraction segment 733 via the reset segment 734, thereby ensuring that the transmission block 74 strictly follows the path of extension segment 731-rotation segment 732-retraction segment 733-reset segment 734 to ensure that the opening and closing action of the flipping clamp 55 and the fixed clamp 54 is stable and reliable.

[0042] Example 3:

[0043] The difference from Embodiment 2 is that, in this embodiment, in addition to the structural features of the aforementioned embodiments, the self-resetting contact 53 includes a contact plate 531, a pair of connecting rods 532 and a pair of reset springs 533. The two ends of the contact plate 531 are fixedly connected to each connecting rod 532, the other end of the pair of connecting rods 532 is fixedly connected to the inner end of the telescopic tube 52, and the pair of reset springs 533 are respectively sleeved on the outside of each connecting rod 532, with both ends abutting against the contact plate 531 and the inner end of the fixed tube 51.

[0044] like Figures 1 to 2 As shown, due to the above-mentioned structure, the structural design of the self-resetting contact 53 makes the telescopic movement of the clamping unit 5 smoother and has good reset performance. When the triggering unit 6 applies force to the self-resetting contact 53, the contact plate 531 is pushed by the external force, and the telescopic tube 52 is driven to slide inside the fixed tube 51 to the outside of the rotating disk 42 through the connecting rod 532 fixed at both ends. At this time, the reset spring 533 sleeved on the outside of the connecting rod 532 is compressed by the contact plate 531 and the inner end of the fixed tube 51. When the triggering unit 6 applies force, the self-resetting contact 531 is pushed by the external force, and the self-resetting contact 531 is pushed by the external force. After the force is removed, the return spring 533 is no longer compressed and begins to rebound. Its elastic force pushes the contact plate 531 to move away from the inner end of the fixed tube 51. The contact plate 531 then drives the telescopic tube 52 to slide inside the fixed tube 51 towards the inner side of the rotating disk 42 through the connecting rod 532 until it returns to the initial position. This self-resetting function ensures that the telescopic tube 52 can accurately return to the initial state after each clamping action, which provides a guarantee for the smooth progress of the next clamping action and effectively cooperates with the trigger unit 6 to control the action rhythm of the clamping unit 5.

[0045] Example 4:

[0046] The difference from Embodiment 3 is that, in this embodiment, in addition to including the structural features of the aforementioned embodiments, the triggering unit 6 includes a rotating sleeve 61, a fixed shell 62, an upper gear 63, and a rack 64. The rotating sleeve 61 is fixed at the center of the rotating disk 42, the fixed shell 62 is fixed on the base 41 and rotates in cooperation with the rotating sleeve 61, and the rack 64 is slidably mounted on the top of the fixed shell 62. The gear is driven by a motor and meshes with the rack 64.

[0047] In this embodiment of the application, a gear ring 9 and a lower gear 10 are also included. The gear ring 9 is disposed on the circumferential wall of the rotating sleeve 61, and the lower gear 10 is driven by a motor to mesh with the gear ring 9.

[0048] like Figures 1 to 2As shown, due to the above structure, the driving coordination between the trigger unit 6 and the rotating disk 42 is more coordinated, ensuring the efficient operation of the entire packaging machine. When the trigger unit 6 is working, the motor drives the upper gear 63 to rotate, and the upper gear 63 meshes with the rack 64, thereby causing the rack 64 to slide on the top of the fixed shell 62. The sliding of the rack 64 will trigger the self-resetting contact 53 of the clamping unit 5, thereby controlling the action of the clamping unit 5. At the same time, the motor drives the lower gear 10 to rotate, and the lower gear 10 meshes with the gear ring 9 fixed on the peripheral wall of the rotating sleeve 61. Since the rotating sleeve 61 is fixed at the center of the rotating disk 42 and is in contact with the rotating disk 42, the motor drives the upper gear 63 to rotate, and the upper gear 63 meshes with the gear ring 9 fixed on the peripheral wall of the rotating sleeve 61. The fixed shell 62 rotates, so the rotation of the lower gear 10 will drive the rotating sleeve 61 and the rotating disk 42 to rotate stably on the base 41. Through this design, the rotation of the rotating disk 42 and the action of the clamping unit 5 can achieve precise coordination: when the rotating disk 42 rotates and a certain placement slot 43 reaches the position of the box conveyor belt 3, the triggering unit 6 just controls the corresponding clamping unit 5 to grab the empty box; when the rotating disk 42 transfers the packaging box containing socks to the next process position, the clamping unit 5 can also act in time to complete the subsequent operation, ensuring the orderly progress of the entire packaging process, such as empty box transfer, sock bagging, and weighing.

[0049] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0050] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A hosiery packer comprising a hosiery feed conveyor and a load cell, characterized by, The box conveying belt, the transfer unit, the clamping units, and the triggering unit are also included. The transfer unit includes a base, a rotating disc, and a plurality of placement slots. The rotating disc is rotatably installed on the base, and a plurality of placement slots are arranged at intervals on the circumference of the rotating disc. Each placement slot is provided with a weighing sensor at the bottom. Each clamping unit is arranged at intervals on the rotating disc. The clamping unit corresponding to the box conveying belt is triggered to move the empty box from the box conveying belt to the placement slot through the triggering unit. The clamping unit includes a pair of fixed tubes, a pair of telescopic tubes, and a self-resetting contact. The fixed tubes are fixedly arranged on the rotating disc. The telescopic tubes are slidably inserted into the fixed tubes, and the inner ends of the telescopic tubes are fixedly connected with the self-resetting contact. The outer ends of the telescopic tubes are fixedly provided with fixed clamping plates. The telescopic tubes are movably provided with flip clamping plates opposite to the fixed clamping plates through rotary driving members. The rotary driving members are used to make the flip clamping plates and the fixed clamping plates close and clamp the packaging box when the telescopic tubes extend radially along the rotating disc until the packaging box moves into the placement slot. The flip clamping plates and the fixed clamping plates are separated. The self-resetting contact is used to control the telescopic tubes to slide in the fixed tubes in cooperation with the triggering unit.

2. A hosiery packer according to claim 1, wherein, The rotary driving member includes a rotating shaft, a circumferential elastic member, a meandering groove, and a transmission block. The rotating shaft is rotatably installed in the telescopic tube, and the transmission block is fixedly arranged on the inner end of the circumferential wall of the rotating shaft. The flip clamping plate is fixedly arranged on the outer end of the circumferential wall. The circumferential elastic member is used to apply a torsional force to the rotating shaft. The inner end of the rotating shaft is provided with an arc-shaped groove. The meandering groove is arranged on the inner wall of the fixed cylinder. The transmission block is slidably connected with the arc-shaped groove and the meandering groove.

3. A hosiery packaging machine according to claim 2, wherein, The meandering groove includes an extending segment, a rotating segment, a retracting segment, a reset segment, and a reverse stopping member. The extending segment is parallel to the retracting segment. The rotating segment extends along the circumference of the telescopic tube and is connected with the front ends of the extending segment and the retracting segment. The reset segment is obliquely connected with the inner ends of the extending segment and the retracting segment, and is used to guide the transmission block to enter the extending segment from the retracting segment when the telescopic tube retreats. The reverse stopping member is used to prevent the transmission block in the extending segment from entering the retracting segment through the reset segment.

4. A hosiery packer according to claim 3, wherein, The reverse stopping member includes a limiting sliding groove, a limiting block, and a pre-tightening spring. The sliding groove is arranged on the inner wall of the fixed tube and is connected with the reset segment at one end. The limiting block is slidably inserted into the limiting sliding groove and the reset segment. The pre-tightening spring is arranged on the inner end of the limiting block and faces the retracting segment obliquely on the outer end.

5. A hosiery packaging machine according to claim 3, wherein, The circumferential elastic member includes a mounting ring groove, a blocking plate, a rotating arc groove, and a torsional spring. The mounting ring groove is arranged on the circumferential wall of the rotating shaft. The rotating arc groove is arranged on the inner wall of the telescopic tube. The blocking plate is fixedly arranged on the top of the mounting ring groove and is slidably connected with the rotating arc groove at one end. The torsional spring is sleeved in the mounting ring groove and is in abutment with the blocking plate and the rotating arc groove at both ends. The torsional spring is used to apply a torsional force to the rotating shaft, so that the transmission block on the outer end of the extending segment enters the retracting segment through the rotating segment, and the fixed clamping plate and the flip clamping plate close.

6. A hosiery packer according to claim 1 wherein, The free ends of the pair of flip clamping plates face each other inward.

7. A hosiery packer according to claim 1 wherein, The self-resetting contact includes a contact plate, a pair of connecting rods, and a pair of reset springs. Both ends of the contact plate are fixedly connected with the connecting rods. The other ends of the connecting rods are fixedly connected with the inner ends of the telescopic tubes. The reset springs are sleeved on the outer sides of the connecting rods, and both ends of the reset springs are in abutment with the contact plate and the inner end of the fixed tube.

8. A hosiery packer according to claim 1 wherein, The trigger unit comprises a rotating sleeve, a fixed shell, an upper gear and a rack, the rotating sleeve is fixed at the center of the rotating disc, the fixed shell is fixed at the bottom and rotatingly matched with the rotating sleeve, the rack is slidingly installed at the top of the fixed shell, and the gear is driven by the motor and engaged with the rack.

9. A hosiery packaging machine according to claim 8, wherein, The trigger unit further comprises a gear ring and a lower gear, the gear ring is arranged on the peripheral wall of the rotating sleeve, and the lower gear is driven by the motor and engaged with the gear ring.

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