Front end feeding device for dental floss packaging machine

Abstract

The utility model discloses a floss packaging machine front end feeding device for transferring floss on a jig to a loading chopstick of a packaging machine, the jig comprises a plurality of rows and is movably connected with a jig bottom plate for loading floss, the feeding device is equipped with the loading station, the transfer station and the unloading station who arranges in proper order, including jig transfer mechanism, carrying mechanism, transplanting mechanism and turnover mechanism, jig transfer mechanism is used for conveying the jig of full load floss to loading station, and is used for exporting the jig of empty load on unloading station, carrying mechanism is used for carrying jig and moves between each station, transplanting mechanism includes the jaw assembly for taking and placing the loading of reciprocating between transfer station and turnover mechanism, and the pushing assembly of loading floss on the loading of turnover mechanism can be pushed to loading chopstick at horizontal of the front side of jaw assembly, the utility model discloses realized the automatic conveying, carrying, loading taking and placing and floss transfer of jig to improve the feeding efficiency, satisfy the demand of large -scale production.

Description

Technical Field

[0001] This utility model relates to the field of dental floss packaging machine technology, specifically to a front-end feeding device for a dental floss packaging machine. Background Technology

[0002] Chinese invention patent announcement number CN114313416B, entitled "Automatic Dental Floss Packaging Machine," discloses a dental floss feeding mechanism for transferring a string of dental floss-laden chopsticks to a dental floss conveyor. This dental floss feeding mechanism is used to transport a turnover box and perform a feeding operation on the chopsticks containing the dental floss-laden chopsticks on the turnover box, thereby realizing the turnover of the dental floss.

[0003] In the dental floss production process, production jigs are used, and the dental floss is always strung on the jigs to facilitate its movement between different processes. However, existing dental floss loading mechanisms have shortcomings in practical applications: when the production and packaging stages are connected, operators need to manually string the dental floss from the jigs onto the loading chopsticks one by one, and after completing the stringing, place the loading chopsticks containing the dental floss into the grooves of the turnover box. This process is not only cumbersome and labor-intensive, but also extremely inefficient. Summary of the Invention

[0004] To overcome the above-mentioned defects, this utility model provides a front-end feeding device for a dental floss packaging machine, which can be directly connected to the production process to realize the direct transfer of dental floss from the production fixture to the loading chopsticks, thereby improving production efficiency.

[0005] The technical solution adopted by this utility model to solve its technical problem is to provide a front-end feeding device for a dental floss packaging machine, which is used to transfer dental floss from the fixture to the material carrier chopstick of the packaging machine. The fixture includes multiple carriers arranged in rows and movably connected to the base plate of the fixture for stringing dental floss. The feeding device is provided with a loading station, a transfer station and a unloading station arranged in sequence, including a fixture transfer mechanism, a handling mechanism, a transfer mechanism and a flipping mechanism. The fixture transfer mechanism is used to transport the fixture full of dental floss to the loading station and to output the fixture that is empty at the unloading station. The handling mechanism is located below the fixture transfer mechanism and is used to move the fixture between the stations.

[0006] The transplanting mechanism is located above the transfer station and includes a gripper assembly that moves back and forth between the transfer station and the flipping mechanism to pick up and place the carrier, and a pusher assembly located in front of the gripper assembly that can horizontally push the dental floss of the carrier on the flipping mechanism to the loading chopstick.

[0007] As a further improvement of this utility model, the fixture transfer mechanism includes two sets of parallel and spaced-apart conveyor belts and two transfer drive components for driving the two sets of conveyor belts to operate. The two sets of conveyor belts are arranged longitudinally at the loading station and the unloading station, respectively. Each set of conveyor belts includes two parallel and spaced-apart conveyor belts, and the two ends of the fixture base plate are rested on the two correspondingly arranged conveyor belts.

[0008] As a further improvement of this utility model, the two conveyor belts that are relatively close to each other in the two sets of conveyor belts are each composed of a main drive belt that is driven and connected to the transfer drive component, and an auxiliary drive belt that is driven and connected to another corresponding conveyor belt. Therefore, a clearance gap is provided between the main drive belt and the auxiliary drive belt.

[0009] As a further improvement of this utility model, the conveying mechanism includes:

[0010] The support frame is arranged laterally and is movable between the two clearance gaps;

[0011] There are two transport plates, which are respectively located at both ends of the support frame laterally. When one transport plate is at the loading station, the other transport plate is at the transfer station, or when one transport plate is at the transfer station, the other transport plate is at the unloading station.

[0012] The transport drive assembly includes a lifting drive for driving the support frame to move the transport plate up and down, and a translation module for driving the lifting drive for moving the lifting drive laterally.

[0013] As a further improvement of this utility model, a transfer support frame is provided between the two sets of conveyor belts. The transfer support frame is provided with a lifting plate for positioning the fixture. The lifting plate is provided with a lifting channel for the transport plate to pass through, and a moving channel that communicates with the lifting channel and is connected to the clearance gap for the support frame to move.

[0014] As a further improvement of this utility model, the transplanting mechanism is mounted on the transfer support frame via a longitudinally arranged frame. The frame is provided with a longitudinal linear module for driving the transplanting mechanism to move back and forth between the transfer station and the flipping mechanism. The longitudinal linear module is provided with a mounting frame. The gripper assembly is mounted on the mounting frame via a vertical linear module and includes multiple transplanting grippers arranged in parallel in the horizontal direction and vertically.

[0015] The material pushing assembly is located on the vertical linear module and in front of the transplanting gripper. It includes a horizontally arranged movable plate, a toothed plate vertically arranged in front of the movable plate, and a material pushing drive component for driving the movable plate to move the toothed plate up and down.

[0016] As a further improvement of this utility model, the flipping mechanism is located below the frame and includes two vertical plates spaced laterally, a flipping shaft plate movably connected to the two vertical plates by bearings, and a flipping drive component located on the outside of one of the vertical plates for driving the flipping shaft plate to rotate.

[0017] The flipping shaft plate is provided with flipping claws on the inner side near the two vertical plates, and a support plate is provided on the side of the two flipping claws that are relatively close to each other.

[0018] As a further improvement of this utility model, the fixture transfer mechanism further includes a fixture transfer component and two sets of fixture docking components; the fixture transfer component is disposed between the two sets of conveyor belt groups and is arranged opposite to the transfer station; the two sets of fixture docking components are respectively disposed between the two conveyor belts of the two sets of conveyor belt groups and can dock with the fixture transfer component.

[0019] The fixture transfer assembly includes a fixture tray, transfer pulley modules disposed on both longitudinal sides of the fixture tray, and a transfer drive unit for driving the two sets of transfer pulley modules to operate synchronously and for driving the fixture on the fixture tray, and for moving laterally above the two sets of conveyor belts.

[0020] As a further improvement of this utility model, the fixture docking assembly includes a docking unit and a drive cylinder for driving the docking unit to rise and fall. The docking unit includes a support plate for supporting the fixture, docking pulley modules disposed on both longitudinal sides of the support plate, and a docking drive component for driving the two sets of docking pulley modules to operate synchronously, so as to drive the fixture on the support plate to move laterally.

[0021] As a further improvement of this utility model, each set of transfer pulley modules includes two first pulleys arranged horizontally at intervals, two second pulleys arranged vertically at intervals and located between the two first pulleys, and a transfer belt sequentially wound around the two first pulleys and the two second pulleys; the two first pulleys are located at the same height, the height of the second pulleys is lower than the height of the first pulleys, and the upper part of the transfer belt is placed on the top surface of the fixture tray;

[0022] Each docking pulley module includes two third pulleys spaced laterally, two fourth pulleys spaced vertically between the two third pulleys, and a docking belt sequentially wound around the two third pulleys and the two fourth pulleys; the two third pulleys are at the same height, the height of the fourth pulleys is lower than the height of the third pulleys, and the upper part of the docking belt is placed on the top surface of the support plate.

[0023] The beneficial effects of this utility model are: through the coordinated operation of the jig transfer mechanism, the handling mechanism, the transplanting mechanism and the flipping mechanism, the automatic conveying, handling, carrier placement and removal and dental floss transfer of the jig are realized, thereby improving the material supply efficiency and meeting the needs of large-scale production; the entire material supply process realizes automated operation, reduces manual intervention, reduces labor intensity, and improves the level of automation and intelligence of production. Attached Figure Description

[0024] Figure 1 A schematic diagram showing the docking state of the feeding device and the material-carrying chopsticks feeding mechanism provided by this utility model;

[0025] Figure 2 This is a schematic diagram of the layout and structure of the jig transfer mechanism and the transport mechanism of this utility model;

[0026] Figure 3 This is a schematic diagram of the transfer mechanism of the fixture of this utility model without a transfer support frame;

[0027] Figure 4 This is a schematic diagram of the structure of the fixture transfer assembly and fixture docking assembly of this utility model;

[0028] Figure 5 This is a schematic diagram of the handling mechanism of this utility model;

[0029] Figure 6 This is a schematic diagram of the transplanting mechanism of this utility model;

[0030] Figure 7 This is a schematic diagram of the state of the transplanting gripper holding carrier of this utility model;

[0031] Figure 8 This is a schematic diagram of the flipping mechanism of this utility model.

[0032] Referring to the accompanying drawings, the following explanations are provided:

[0033] 100. Fixture; 101. Fixture base plate; 102. Carrier; 1021. Main body; 1022. Contouring rod; 200. Material-carrying chopstick; 300. Material-carrying chopstick conveying device; 1. Fixture transfer mechanism; 11. Conveyor belt assembly; 111. Conveyor belt; 112. Main drive belt; 113. Auxiliary drive belt; 114. Clearance clearance; 12. Transfer drive component; 13. Transfer support frame; 131. Lifting plate; 1311. Lifting channel; 1312. Moving channel; 14. Fixture transfer assembly; 141. Fixture pallet; 142. Transfer pulley module; 1421. First pulley; 1422. Second pulley; 1423. Transfer belt; 143. Transfer drive component; 15. Fixture docking assembly; 151. Docking unit; 1511. 1. Bearing plate; 1512, docking pulley module; 15121, third pulley; 15122, fourth pulley; 15123, docking belt; 1513, docking drive component; 152, drive cylinder; 2. Handling mechanism; 21, support frame; 22, handling plate; 23, handling drive assembly; 231, lifting drive component; 232, translation module; 3. Transplanting mechanism; 31, gripper assembly; 311, transplanting gripper; 32, pushing assembly; 321, moving plate; 322, toothed plate; 323, pushing drive component; 33, frame; 34, longitudinal linear module; 35, mounting frame; 36, vertical linear module; 4. Tilting mechanism; 41, vertical plate; 42, tilting shaft plate; 43, tilting drive component; 44, tilting gripper; 45, support plate. Detailed Implementation

[0034] The preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] In the prior art, the production fixture 100 used in the dental floss production process adopts a modular design, with multiple carriers 102 arranged in an array vertically inserted into the fixture base plate 101. Multiple contoured rods 1022 are evenly distributed on the main body 1021 of each carrier 102. The cross-sectional profile of these contoured rods 1022 is adapted to the geometric features of the dental floss annular portion, forming a positioning structure specifically for floss stringing.

[0036] See Figure 1 This utility model provides a front-end feeding device for a dental floss packaging machine, which interfaces with the material-carrying chopstick conveying device 300 in the prior art. It transfers dental floss from the production fixture to the material-carrying chopsticks on the dental floss conveying line, eliminating the need for manual feeding of the dental floss from the production fixture onto the material-carrying chopsticks and then placing the chopsticks into the turnover box. This achieves automated integration of production and packaging processes, simplifies the turnover process, and improves production efficiency. Since this utility model is a technical improvement on the front-end feeding device of a packaging machine, the material-carrying chopstick conveying device 300 will not be described in detail here.

[0037] Of course, according to existing technology, in order to achieve the docking of the carrier and the material chopstick to transfer dental floss, the end of the carrier's contour rod and the end of the material chopstick can overlap, and the overlap does not affect the movement of the dental floss.

[0038] See Figures 1 to 4 The feeding device has a loading station, a transfer station, and an unloading station arranged in sequence. It includes a fixture transfer mechanism 1, a handling mechanism 2, a transfer mechanism 3, and a flipping mechanism 4. These mechanisms work together to load and unload the fixtures, achieving efficient and automated floss feeding. The fixture transfer mechanism 1 employs a dual-channel conveying design. One channel transports fixtures fully loaded with floss to the loading station, while the other channel retrieves empty fixtures from the unloading station after floss transfer via reverse conveying, forming a closed-loop logistics cycle. The handling mechanism 2 is installed below the fixture transfer mechanism 1 and is configured to transport fixtures fully loaded with floss from the loading station to the transfer station, and simultaneously transport empty fixtures from the transfer station to the unloading station, enabling the movement of fixtures between stations. The transplanting mechanism 3 is located above the transfer station and includes a gripper assembly 31 that moves back and forth between the transfer station and the flipping mechanism 4 to pick up and put down the carrier, and a pusher assembly 32 located in front of the gripper assembly 31 that can horizontally push the dental floss on the carrier that has completed the attitude adjustment on the flipping mechanism 4 to the material carrier chopstick 200.

[0039] This feeding device achieves efficient and stable automated floss feeding through the coordinated operation of various mechanisms, connecting the production and packaging processes to improve production efficiency and product quality.

[0040] Specifically, the fixture transfer mechanism 1 includes two sets of conveyor belts 11 with identical structures and arranged longitudinally in parallel. The two sets of conveyor belts 11 form two independent logistics channels corresponding to the loading station and the unloading station, respectively. To ensure the synchronization and independence of the two sets of conveyor belts 11, both sets of conveyor belts 11 are equipped with transfer drive components 12.

[0041] Each conveyor belt group 11 includes two parallel and spaced conveyor belts 111. The fixture base plate 101 is placed transversely across the bearing surface of the conveyor belt 111 so that the fixture 100 can move with the movement of the conveyor belt 111.

[0042] In addition, the two conveyor belts 111 that are relatively close to each other in the two sets of conveyor belt groups 11 are each composed of a main drive belt 112 that is connected to the transfer drive unit 12 and an auxiliary drive belt 113 that is connected to the other corresponding conveyor belt 111. Therefore, a clearance 114 is provided between the main drive belt 112 and the auxiliary drive belt 113 to provide moving space for the handling mechanism 2.

[0043] The conveyor belt is conventionally wound around the conveyor belt pulley, and will not be described in detail in this embodiment.

[0044] See Figure 2 and Figure 5 The conveying mechanism 2 is perpendicular to the conveying direction of the conveyor belt group 11 and is arranged in the space below the conveyor belt group 11. The conveying mechanism 2 includes a support frame 21 arranged laterally and movable between two clearance gaps 114, two conveying plates 22 respectively disposed at both ends of the support frame 21, and a conveying drive assembly 23 for driving the support frame 21 to drive the conveying plates 22 to achieve corresponding actions. The conveying drive assembly 23 includes a lifting drive component 231 for driving the support frame 21 to drive the conveying plates 22 to move up and down, and a translation module 232 for driving the lifting drive component 231 to move laterally.

[0045] Furthermore, when one of the transport plates 22 is located at the loading station, the other transport plate 22 is located at the transfer station, or when one of the transport plates 22 is located at the transfer station, the other transport plate 22 is located at the unloading station, thereby ensuring the fixed cycle time of the loading, unloading and transfer processes and realizing the continuity of the transport action.

[0046] Furthermore, in order to ensure that the jig remains stable when the transplanting mechanism picks up and puts down the carrier at the transfer station, this embodiment provides a transfer support frame 13 between the two sets of conveyor belts 11 at the transfer station. The transfer support frame 13 is provided with a lifting plate 131 for positioning the jig 100. The lifting plate 131 is provided with a lifting channel 1311 for the transport plate 22 to pass through, and a moving channel 1312 that is connected to the lifting channel 1311 and docks with the clearance gap 114 for the support frame 21 to move.

[0047] The top surface of the lifting plate 131 is provided with positioning blocks at the four corners near the lifting channel 1311, which are adapted to the four corners of the fixture base plate of the fixture, so as to ensure that the fixture is stably supported at the transfer station.

[0048] See Figure 1 and Figure 6 The transplanting mechanism 3 is mounted on the transfer support frame 13 via a longitudinally arranged frame 33. The frame 33 has a longitudinal linear module 34 for driving the transplanting mechanism 3 to move back and forth between the transfer station and the flipping mechanism. A mounting frame 35 is mounted on the longitudinal linear module 34. The gripper assembly 31 is mounted on the mounting frame 35 via a vertical linear module 36, and includes multiple transversely arranged and vertically positioned transplanting grippers 311. A pushing assembly 32 is located on the vertical linear module 36 and in front of the transplanting grippers 311. It includes a horizontally arranged moving plate 321, a toothed plate 322 vertically positioned in front of the moving plate 321, and a pushing drive component 323 for driving the moving plate 321 to move the toothed plate 322 up and down. The teeth on the toothed plate 322 can be inserted into the gaps between the contour rods.

[0049] See Figure 1 and 8 The flipping mechanism 4 is configured to flip at 90° in both the horizontal and vertical directions. It is located below the frame 33 and within the stroke of the longitudinal linear module 34. This ensures that the longitudinal linear module 34 drives the pushing assembly 32 to move forward and push the dental floss on the carrier that has completed the attitude change on the flipping mechanism onto the carrying chopstick. The flipping mechanism 4 includes two vertical plates 41 spaced apart in the horizontal direction, a flipping shaft plate 42 movably connected to the two vertical plates 41 by bearings, and a flipping drive member 43 located on the outside of one of the vertical plates 41 for driving the flipping shaft plate 42 to rotate. The flipping shaft plate 42 is provided with flipping grippers 44 on the inner side near the two vertical plates 41, and a support plate 45 is provided on the side of the two flipping grippers 44 that are relatively close to each other.

[0050] Continue reading Figures 1 to 4 The fixture transfer mechanism 1 also includes a fixture transfer assembly 14 and two sets of fixture docking assemblies 15 to achieve docking with the dental floss production process. The fixture transfer assembly 14 is located between the two sets of conveyor belts 11 and is positioned opposite to the transfer station. The two sets of fixture docking assemblies 15 are respectively located between the two conveyor belts 111 of the two sets of conveyor belts 11 and can dock with the fixture transfer assembly 14. The fixture transfer assembly 14 includes a fixture tray 141, transfer pulley modules 142 located on both longitudinal sides of the fixture tray 141, and a transfer drive component 143 for driving the two sets of transfer pulley modules 142 to operate synchronously and for driving the fixture 100 on the fixture tray 141 to move laterally above the two sets of conveyor belts 11. Each set of transfer pulley modules 142 includes two horizontally spaced first pulleys 1421, two vertically spaced second pulleys 1422 located between the two first pulleys 1421, and a transfer belt 1423 sequentially wound around the two first pulleys 1421 and the two second pulleys 1422. The two first pulleys 1421 are at the same height, the height of the second pulleys 1422 is lower than the height of the first pulleys 1421, and the upper part of the transfer belt 1423 rests on the top surface of the fixture tray 141. Thus, when the fixture is placed on the fixture tray 141, it can be transported to the conveyor belt groups 11 on both sides by the transfer belt 1423. At the same time, the height of the fixture tray 141 is higher than the height of the conveyor belt bearing surface to ensure that the fixture can be smoothly moved from the fixture transfer assembly 14 to the fixture docking assembly 15.

[0051] In addition, the fixture docking assembly 15 includes a docking unit 151 and a drive cylinder 152 for driving the docking unit 151 to rise and fall. The docking unit 151 includes a support plate 1511 for supporting the fixture 100, docking pulley modules 1512 disposed on both longitudinal sides of the support plate 1511, and a docking drive component 1513 for driving the two sets of docking pulley modules 1512 to operate synchronously, so as to drive the fixture 100 on the support plate 1511 to move laterally. Each docking pulley module 1512 includes two horizontally spaced third pulleys 15121, two vertically spaced fourth pulleys 15122 located between the two third pulleys 15121, and a docking belt 15123 sequentially wound around the two third pulleys 15121 and the two fourth pulleys 15122; the two third pulleys 15121 are at the same height, the height of the fourth pulleys 15122 is lower than the height of the third pulleys 15121, and the upper part of the docking belt 15123 is placed on the top surface of the support plate 1511.

[0052] It should be noted that the transfer drive 12, transport drive 143, docking drive 1513, and tilting drive 43 mentioned in this embodiment are servo motors of appropriate specifications selected according to the action requirements. The lifting drive 231 and the pushing drive 323 are linear cylinders. The translation module 232, the longitudinal linear module 34, and the vertical linear module 36 are linear modules; these are all conventional technical means in the art and have not been described in detail in this embodiment.

[0053] Specifically, the working process of this utility model is as follows:

[0054] For ease of description, using Figure 1 Based on the direction, the left, right, front, and back positions are defined; a fixture containing dental floss is called a fully loaded fixture, and a fixture after the dental floss transfer is called an empty fixture.

[0055] The fully loaded fixture is placed on the fixture tray 141 and moved to the right by the transfer belt 1423. It is then handed over to the synchronous lifting on the right side and placed on the docking belt 15123, which is at the same height as the transfer belt 1423. It is then transported to the bearing plate 1511 by the docking belt. After that, the bearing plate 1511 moves down and drops the fully loaded fixture onto the corresponding conveyor belt 111. The fully loaded fixture is then sent to the loading station by the conveyor belt 111. It is then lifted by the handling plate 22 and moved to the left to be placed on the lifting plate 131 of the transfer station. This process of transferring fully loaded fixtures is repeated.

[0056] The transfer gripper 311 picks up one of the sets of carriers fully loaded with fixtures on the lifting plate 131 and places them on the support plate 45. The flip gripper 44 clamps the main body 1021 of the carrier 102 and rotates it 90° so that the contour rod 1022 aligns with the horizontally set material chopstick. The moving plate 321 drives the toothed plate 322 to be vertically inserted into the gap of the contour rod 1022 near the main body 1021 and pushed forward to complete the transfer of dental floss. Then the flip gripper 44 is reset, and the empty carrier is picked up by the transfer gripper 311 and returned to the fixture base plate 101 in the transfer station. The cycle continues until the dental floss is cleared.

[0057] The transport plate 22 is lifted and moved to the right, moving the empty fixture to the left unloading station and dropping it onto the corresponding conveyor belt. At the same time, the full-load fixture located at the loading station is moved and placed on the lifting plate 131.

[0058] The left conveyor belt transports the empty fixture to the left side of the fixture tray 141. The corresponding support plate 1511 is lifted to the same height as the transfer belt 1423. The empty fixture is transferred to the transfer belt 1423 via the right-moving docking belt 15123 and moves onto the fixture tray 141 with the transfer belt 1423.

[0059] This creates a closed-loop process of loading fully loaded jigs, transferring dental floss, and recovering empty jigs, simplifying the turnover process and enabling efficient transfer of dental floss.

[0060] Many specific details have been set forth in the above description to provide a full understanding of this utility model. However, the above description is only a preferred embodiment of this utility model, and this utility model can be implemented in many other ways different from those described herein. Therefore, this utility model is not limited to the specific embodiments disclosed above. Furthermore, any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the methods and techniques disclosed above, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, shall still fall within the protection scope of the technical solution of this utility model.

Claims

1. A front-end feeding device for a dental floss packaging machine, used to transfer dental floss from a fixture (100) to a loading chopstick (200) of the packaging machine, the fixture (100) comprising a plurality of rows of loading carriers (102) movably connected to a fixture base plate (101) for stringing dental floss, characterized in that: The feeding device is provided with loading station, transfer station and unloading station arranged in sequence, including jig transfer mechanism (1), handling mechanism (2), transfer mechanism (3) and flipping mechanism (4). The jig transfer mechanism (1) is used to transport the jig loaded with dental floss to the loading station and to output the jig that is empty at the unloading station. The handling mechanism (2) is located below the jig transfer mechanism (1) and is used to move the jig between the stations. The transplanting mechanism (3) is located above the transfer station and includes a gripper assembly (31) that moves back and forth between the transfer station and the flipping mechanism (4) to pick up and put down the carrier, and a pusher assembly (32) located in front of the gripper assembly (31) that can horizontally push the dental floss of the carrier on the flipping mechanism (4) to the loading chopstick (200).

2. The front end feeding apparatus for a dental floss packaging machine according to claim 1, characterized in that: The fixture transfer mechanism (1) includes two sets of parallel and spaced conveyor belts (11) and two transfer drive units (12) for driving the two sets of conveyor belts (11) to operate. The two sets of conveyor belts (11) are arranged longitudinally at the loading station and the unloading station, respectively. Each set of conveyor belts (11) includes two parallel and spaced conveyor belts (111). The two ends of the fixture base plate (101) are placed on the two corresponding conveyor belts (111).

3. The front end feeding apparatus for a dental floss packaging machine according to claim 2, characterized in that: The two conveyor belts (111) of the two sets of conveyor belts (11) that are relatively close to each other are each composed of a main drive belt (112) that is connected to the transfer drive (12) and an auxiliary drive belt (113) that is connected to the other corresponding conveyor belt (111). Therefore, a clearance gap (114) is provided between the main drive belt (112) and the auxiliary drive belt (113).

4. The front end feeding apparatus for a dental floss packaging machine according to claim 3, characterized in that, The transport mechanism (2) includes: The support frame (21) is arranged laterally and is movable between the two clearance gaps (114); There are two transport plates (22), which are respectively located at the two ends of the support frame (21) laterally. When one of the transport plates (22) is located at the loading station, the other transport plate (22) is located at the transfer station, or when one of the transport plates (22) is located at the transfer station, the other transport plate (22) is located at the unloading station. The transport drive assembly (23) includes a lifting drive (231) for driving the support frame (21) to move the transport plate (22) up and down, and a translation module (232) for driving the lifting drive (231) to move laterally.

5. The front end feeding apparatus for a dental floss packaging machine according to claim 4, characterized in that: A transfer support frame (13) is provided between the two sets of conveyor belts (11). The transfer support frame (13) is provided with a lifting plate (131) for positioning the fixture (100). The lifting plate (131) is provided with a lifting channel (1311) for the transport plate (22) to pass through, and a moving channel (1312) connected to the lifting channel (1311) and docked with the clearance gap (114) for the support frame (21) to move.

6. The front end feeding apparatus for a dental floss packaging machine according to claim 5, characterized in that: The transplanting mechanism (3) is mounted on the transfer support frame (13) via a longitudinally arranged frame (33). The frame (33) is provided with a longitudinal linear module (34) for driving the transplanting mechanism (3) to move back and forth between the transfer station and the flipping mechanism. The longitudinal linear module (34) is provided with a mounting frame (35). The gripper assembly (31) is mounted on the mounting frame (35) via a vertical linear module (36) and includes multiple transplanting grippers (311) arranged in parallel in the horizontal direction and arranged vertically. The pushing component (32) is located on the vertical linear module (36) and in front of the transplanting gripper (311). It includes a horizontally arranged moving plate (321), a toothed plate (322) vertically arranged in front of the moving plate (321), and a pushing drive component (323) for driving the moving plate (321) to move the toothed plate (322) up and down.

7. The front end feeding apparatus for a dental floss packaging machine according to claim 6, characterized in that: The flipping mechanism (4) is located below the frame (33) and includes two vertical plates (41) spaced laterally, a flipping shaft plate (42) movably connected to the two vertical plates (41) by bearings, and a flipping drive member (43) located on the outside of one of the vertical plates (41) for driving the flipping shaft plate (42) to rotate. The flipping shaft plate (42) is provided with flipping claws (44) on the inner side near the two vertical plates (41), and a support plate (45) is provided on the side of the two flipping claws (44) that are relatively close to each other.

8. The front end feeding apparatus for a dental floss packaging machine according to claim 2, characterized by: The fixture transfer mechanism (1) further includes a fixture transfer component (14) and two sets of fixture docking components (15); the fixture transfer component (14) is located between the two sets of conveyor belt groups (11) and is opposite to the transfer station; the two sets of fixture docking components (15) are respectively located between the two conveyor belts (111) of the two sets of conveyor belt groups (11) and can dock with the fixture transfer component (14); The fixture transfer assembly (14) includes a fixture tray (141), transfer pulley modules (142) disposed on both longitudinal sides of the fixture tray (141), and a transfer drive unit (143) for driving the two sets of transfer pulley modules (142) to operate synchronously and for driving the fixture (100) on the fixture tray (141), and capable of moving laterally above the two sets of conveyor belt groups (11).

9. The front-end feeding device of the dental floss packaging machine according to claim 8, characterized in that: The fixture docking assembly (15) includes a docking unit (151) and a drive cylinder (152) for driving the docking unit (151) to rise and fall. The docking unit (151) includes a support plate (1511) for supporting the fixture (100), docking pulley modules (1512) disposed on both longitudinal sides of the support plate (1511), and a docking drive component (1513) for driving the two sets of docking pulley modules (1512) to operate synchronously so as to drive the fixture (100) on the support plate (1511) to move laterally.

10. The front end feeding apparatus for a dental floss packaging machine according to claim 9, characterized in that: Each set of the transfer pulley modules (142) includes two first pulleys (1421) arranged laterally, two second pulleys (1422) arranged vertically and located between the two first pulleys (1421), and a transfer belt (1423) sequentially wound around the two first pulleys (1421) and the two second pulleys (1422); the two first pulleys (1421) are at the same height, the height of the second pulleys (1422) is lower than the height of the first pulleys (1421), and the upper part of the transfer belt (1423) is placed on the top surface of the fixture tray (141); Each docking pulley module (1512) includes two third pulleys (15121) spaced laterally, two fourth pulleys (15122) spaced vertically and located between the two third pulleys (15121), and a docking belt (15123) sequentially wound around the two third pulleys (15121) and the two fourth pulleys (15122); the two third pulleys (15121) are at the same height, the height of the fourth pulleys (15122) is lower than the height of the third pulleys (15121), and the upper part of the docking belt (15123) is placed on the top surface of the support plate (1511).

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