A sleeving device for an expanding paper cup sleeving machine

Abstract

The application discloses a sleeving device for an expanding paper cup sleeving machine, and belongs to the technical field of paper cup packaging equipment, which comprises a fixing seat, supporting legs fixedly connected to the bottom corners of the fixing seat, and connecting columns fixedly connected to the top corners of the fixing seat. The application is provided with an expanding mechanism and a pushing and rebounding mechanism, and can realize gradual expansion and controllable pushing of the paper cup sleeve. When the moving seat moves downward under the driving of the hydraulic rod, the conical seat moves upward relative to the moving seat, the roller rolls along the sliding groove, the rotating arm is pushed to rotate outward around the fixed shaft, and the resistance plate is driven to expand the paper cup sleeve outward. When the expansion is completed, the moving seat moves upward, the pushing and rebounding mechanism can push the paper cup sleeve, the sequence and coordination of the expansion and pushing actions are ensured, the problems that the traditional device pushes before the expansion is completed or the expansion is retracted when the pushing is performed are avoided, and the sleeving success rate is further improved.

Description

Technical Field

[0001] This invention relates to the field of paper cup packaging equipment technology, specifically to an inserting device for an expansion paper cup outer sleeve machine. Background Technology

[0002] A paper cup outer casing machine is an automated packaging device used to produce double-layer paper cups (paper cups with heat-insulating or decorative outer casings). This equipment rolls paper base material into a cylindrical outer casing and laminates it onto the outer wall of the paper cup to form a double-layer paper cup product with functions such as heat insulation, anti-scalding, and enhanced structural strength. It often uses a simple push-in or air-blowing method. Since the paper cup body is conical with a larger top and a smaller bottom, and the outer casing is a straight cylinder, direct push-in can easily cause the outer casing to jam, deform, or damage the cup mouth. At this time, an expansion-type paper cup outer casing machine is needed to expand the paper cup outer casing with a fitting device.

[0003] In actual use, the existing inserting device for the expandable paper cup outer casing machine generally adopts a mechanical expansion mechanism. However, it generally suffers from problems such as complex structure, asynchronous expansion and inserting actions, and poor linkage. It is easy for phenomena such as pushing before expansion is completed or the expansion has already retracted when pushing to a certain extent, which affects the success rate of inserting. Therefore, there is an urgent need to improve the technology of the inserting device structure for the expandable paper cup outer casing machine to improve this equipment. Summary of the Invention

[0004] The purpose of this invention is to provide an inserting device for an expanding paper cup outer casing machine. By setting an expansion mechanism and a push-back mechanism, the progressive expansion and controllable pushing of the paper cup outer casing are achieved. When the moving seat moves downward under the drive of the hydraulic rod, the conical seat rises relative to the moving seat, the roller rolls along the slide groove, and pushes the rotating arm to rotate outward around the fixed axis, thereby driving the abutment plate to expand the paper cup outer casing outward. When the expansion is completed, the moving seat moves upward, and the push-back mechanism can push the paper cup outer casing, ensuring the sequence and coordination of the expansion and pushing actions. This avoids the problems of pushing before the expansion is completed or the expansion has retracted during pushing in traditional devices, thus solving the problems mentioned in the background art in the current market.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an inserting device for an expanding paper cup outer sleeve machine, comprising a fixed base, supporting legs fixedly connected to the four corners of the bottom end of the fixed base, and connecting columns fixedly connected to the four corners of the top end of the fixed base; A top plate is fixedly connected between the top and side ends of the connecting column. A hydraulic rod is embedded inside the top plate. A movable seat is fixedly connected to the bottom end of the hydraulic rod. A notch is opened through the center of the top of the movable seat. A fixed rod is fixedly connected to the bottom end of the top plate. The fixed rod is located inside the notch and forms a sliding connection with the notch. A conical seat is fixedly connected to the bottom end of the fixed rod. An expansion mechanism is provided on the outside of the conical seat. The expansion mechanism can expand the outer sleeve of the paper cup. A connecting rod is provided inside the top plate. A transmission mechanism is provided inside the movable seat. The transmission mechanism controls the movement of the connecting rod. A suction ring is provided at the bottom of the connecting rod. The suction ring is located at the bottom of the movable seat. A push switch is embedded at the bottom end of the movable seat corresponding to the position of the suction ring. A push-back mechanism is provided outside the suction ring. The push-back mechanism controls the suction ring to automatically reset after being pushed.

[0006] Preferably, the outer end of the conical seat has four sliding grooves, the distance between the four sliding grooves is the same, the bottom end of the movable seat has four grooves, the four grooves are arranged around the conical seat, the inner wall of the groove is fixedly connected to a fixed shaft, the outside of the fixed shaft is rotatably connected to a rotating arm, the outer end of the rotating arm is fixedly connected to the inner wall of the groove and the torsion spring is wound around the outside of the fixed shaft, the inner end of the rotating arm is rotatably connected to a roller, the roller is rolled inside the sliding groove, and the outer end of the rotating arm is connected to a support plate through a bracket.

[0007] Preferably, the slide is inclined, and the inclination of the slide is the same as the inclination of the outer end of the conical seat.

[0008] Preferably, the torsion spring is made of piano wire, and the outer end of the torsion spring is coated with an anti-rust coating.

[0009] Preferably, the cross-section of the abutment is arc-shaped, and the outer end of the abutment is provided with a polished layer.

[0010] Preferably, the movable seat has two opening slots inside, and an active toothed plate is fixedly connected to the side wall of the opening slot. A mounting bracket is fixedly connected to the bottom end of the top plate at the position corresponding to the opening slot. A transmission gear is rotatably connected to the bottom end of the mounting bracket. The transmission gear is meshed with the side end of the active toothed plate, and a driven toothed plate is provided at the other end of the transmission gear.

[0011] Preferably, the lower part of the outer end of the driven tooth plate is provided with a straight section, and when the moving seat moves down to the maximum extent, the meshing teeth at the outer end of the driven tooth plate contact the transmission gear.

[0012] Preferably, a connecting rod is fixedly connected to the top of the driven toothed plate, a connecting rod groove is provided on the top plate at the position corresponding to the connecting rod, a tension spring groove is provided on the top of the top plate near the connecting rod groove, the connecting rod passes through the connecting rod groove and extends to the outside of the tension spring groove, a tension spring is fixedly connected between the inner top wall of the tension spring groove and the outer wall of the connecting rod, and the tension spring is wound around the outside of the connecting rod.

[0013] Preferably, the connecting rod, the driven toothed plate, and the suction ring are connected in sequence to form a whole.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention achieves progressive expansion and controllable pushing of the paper cup outer sleeve by setting up an expansion mechanism and a push-back mechanism. When the moving seat moves downward under the drive of the hydraulic rod, the conical seat rises relative to the moving seat, the roller rolls along the slide groove, and pushes the rotating arm to rotate outward around the fixed axis, thereby driving the plate to expand the paper cup outer sleeve outward. When the expansion is complete, the moving seat moves upward, and the push-back mechanism can push the paper cup outer sleeve, ensuring the sequence and coordination of the expansion and pushing actions. This avoids the problems of pushing before the expansion is completed or the expansion has retracted during pushing in traditional devices, further improving the success rate of inserting the cup.

[0015] This invention employs a transmission mechanism. When the movable seat moves downward, the active toothed plate is positioned above the transmission gear, preventing initial contact between the active toothed plate and the transmission gear. As the movable seat moves downward, the driven toothed plate is pulled downward along with the suction ring, compressing the tension spring. When the movable seat pulls the active toothed plate downward and it contacts the transmission gear, the lower part of the outer section of the driven toothed plate is straight, allowing the active toothed plate to idle. After the outer sleeve has fully expanded, the teeth at the outer end of the driven toothed plate contact the transmission gear. This allows the movable seat to move upward, driving the driven toothed plate downward through the transmission mechanism, thereby pushing the suction ring downward. At this point, the suction ring separates from the push switch, eliminating the suction force on the outer sleeve, making it easier to push the outer sleeve away and facilitating use.

[0016] This invention utilizes a tension spring. When the movable seat moves upward, it can drive the driven toothed plate downward through the transmission mechanism. The tension spring is compressed, and when the driven toothed plate pushes the suction ring to the outside of the paper cup, the active toothed plate at the movable seat separates from the transmission gear. At this time, the driven toothed plate moves upward through the elastic connection formed with the tension spring until the suction ring abuts against the bottom of the movable seat. During the upward movement, the driven toothed plate will come into contact with the transmission gear. However, since the active toothed plate is located above the transmission gear at this time, the movement of the driven toothed plate only drives the transmission gear to rotate and will not trigger the transmission mechanism to operate. The driven toothed plate can also be smoothly reset, making it convenient to use. Attached Figure Description

[0017] Figure 1This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal cross-sectional structure of the movable seat of the present invention; Figure 3 This is a top view of the movable seat structure of the present invention; Figure 4 For the present invention Figure 2 A magnified view of the structure at point A in the middle; Figure 5 For the present invention Figure 2 A magnified schematic diagram of the structure at point B in the middle; Figure 6 For the present invention Figure 3 A magnified schematic diagram of the structure at point C.

[0018] In the diagram: 1. Fixed seat; 2. Support leg; 3. Connecting column; 4. Top plate; 5. Hydraulic rod; 6. Moving seat; 7. Notch; 8. Fixed rod; 9. Conical seat; 10. Slide groove; 11. Groove; 12. Fixed shaft; 13. Rotating arm; 14. Torsion spring; 15. Roller; 16. Support plate; 17. Opening slot; 18. Driving gear plate; 19. Mounting bracket; 20. Transmission gear; 21. Driven gear plate; 22. Connecting rod; 23. Connecting rod groove; 24. Tension spring groove; 25. Tension spring; 26. Suction ring; 27. Push switch. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0020] Please see Figures 1 to 6 The present invention provides a technical solution: an inserting device for an expanding paper cup outer sleeve machine, including a fixed base 1, support legs 2 fixedly connected to the four corners of the bottom end of the fixed base 1, and connecting columns 3 fixedly connected to the four corners of the top end of the fixed base 1. A top plate 4 is fixedly connected between the top and side ends of the connecting column 3. A hydraulic rod 5 is embedded inside the top plate 4. A movable seat 6 is fixedly connected to the bottom end of the hydraulic rod 5. A notch 7 is opened through the middle of the top of the movable seat 6. A fixed rod 8 is fixedly connected to the bottom end of the top plate 4. The fixed rod 8 is located inside the notch 7 and forms a sliding connection with the notch 7. A conical seat 9 is fixedly connected to the bottom end of the fixed rod 8. An expansion mechanism is provided on the outside of the conical seat 9. The expansion mechanism can expand the outer shell of the paper cup. A connecting rod 22 is provided inside the top plate 4. A transmission mechanism is provided inside the movable seat 6. The transmission mechanism controls the movement of the connecting rod 22. A suction ring 26 is provided at the bottom of the connecting rod 22. The suction ring 26 is located at the bottom of the movable seat 6. A push switch 27 is embedded at the bottom end of the movable seat 6 corresponding to the position of the suction ring 26. A push-back mechanism is provided on the outside of the suction ring 26. The push-back mechanism controls the suction ring 26 to automatically reset after being pushed.

[0021] By setting up an expansion mechanism and a push-back mechanism, the gradual expansion and controllable pushing of the paper cup outer sleeve are realized. When the moving seat 6 moves downward under the drive of the hydraulic rod 5, the conical seat 9 rises relative to the moving seat 6, the roller 15 rolls along the slide groove 10, and pushes the rotating arm 13 to rotate outward around the fixed shaft 12, thereby driving the abutment plate 16 to expand the paper cup outer sleeve outward. When the expansion is completed, the moving seat 6 moves upward, and the push-back mechanism can push the paper cup outer sleeve, ensuring the sequence and coordination of the expansion and pushing actions, avoiding the problems of pushing before the expansion is completed or the expansion has retracted when pushing in traditional devices, and further improving the success rate of inserting.

[0022] Please see Figures 1 to 3 The outer end of the conical seat 9 has four sliding grooves 10, which are equidistant from each other. The bottom end of the movable seat 6 has four grooves 11, which are arranged around the conical seat 9. A fixed shaft 12 is fixedly connected to the inner wall of the groove 11. A rotating arm 13 is rotatably connected to the outside of the fixed shaft 12. A torsion spring 14 is fixedly connected between the outer end of the rotating arm 13 and the inner wall of the groove 11. The torsion spring 14 is wound around the outside of the fixed shaft 12. A roller 15 is rotatably connected to the inner end of the rotating arm 13. The roller is connected inside the slide 10. The outer end of the rotating arm 13 is connected to the abutment 16 through the bracket. The slide 10 is inclined. The inclination of the slide 10 is the same as the inclination of the outer end of the conical seat 9. By setting the inclination of the slide 10 to be the same as the inclination of the outer end of the conical seat 9, the roller 15 rolls smoothly in the slide 10, making the expansion process stable and uniform, reducing frictional resistance, and improving the consistency of expansion.

[0023] Please see Figures 1 to 4The torsion spring 14 is made of piano wire, and the outer end of the torsion spring 14 is coated with an anti-rust coating. By making the torsion spring 14 of piano wire and coating it with an anti-rust coating, the fatigue strength and corrosion resistance of the spring are significantly improved. It is suitable for long-term high-frequency working environment and extends the service life of the expansion mechanism. The cross section of the abutment plate 16 is arc-shaped, and the outer end of the abutment plate 16 is provided with a polished layer. The interior of the moving seat 6 is provided with two opening slots 17. The side wall of the opening slot 17 is fixedly connected to the active tooth plate 18. The bottom end of the top plate 4 is fixedly connected to the position of the opening slot 17. The bottom end of the mounting bracket 19 is rotatably connected to the transmission gear 20. The transmission gear 20 is meshed with the side end of the active tooth plate 18. The other end of the transmission gear 20 is provided with a driven tooth plate 21.

[0024] After the outer sleeve is expanded, the teeth at the outer end of the driven toothed plate 21 come into contact with the transmission gear 20, which allows the moving seat 6 to move upward and drive the driving toothed plate 18 to move. The driving toothed plate 18 drives the driven toothed plate 21 to move through the meshing connection with the transmission gear 20, thereby pushing the suction ring 26 to move downward.

[0025] Please see Figures 1 to 2 The driven toothed plate 21 has a straight section at the lower part of its outer end. When the moving seat 6 moves down to its maximum extent, the teeth at the outer end of the driven toothed plate 21 contact the transmission gear 20. A connecting rod 22 is fixedly connected to the top of the driven toothed plate 21. A connecting rod groove 23 is opened on the top plate 4 corresponding to the position of the connecting rod 22. A tension spring groove 24 is opened on the top of the top plate 4 near the top of the connecting rod groove 23. The connecting rod 22 passes through the connecting rod groove 23 and extends to the outside of the tension spring groove 24. A tension spring 25 is fixedly connected between the inner top wall of the tension spring groove 24 and the outer wall of the connecting rod 22. The tension spring 25 is wrapped around the outside of the connecting rod 22. The connecting rod 22, the driven toothed plate 21 and the suction ring 26 are connected in sequence to form a whole.

[0026] Working principle: When using the inserting device of this expansion paper cup outer sleeve machine, firstly, the hydraulic rod 5 is in the retracted state, the moving seat 6 is in the high position, the expansion mechanism is in the closed state, the suction ring 26 is in contact with the press switch 27, and the paper cup outer sleeve is attracted to the conical seat 9 above by the suction ring 26. When the hydraulic rod 5 works (controlling the stroke through the hydraulic rod 5 is existing technology, so it will not be described in detail in this application), it can push the moving seat 6 to move downward, the fixed rod 8 rises relative to the moving seat 6, the conical seat 9 moves upward relative to the moving seat 6, the roller 15 rolls along the sliding groove 10 on the outside of the conical seat 9, pushing the rotating arm 13 to rotate outward around the fixed shaft 12, overcoming the elastic force of the torsion spring 14, driving the abutment plate 16 to expand outward, and gradually opening the paper cup outer sleeve. During this process, the active tooth plate 18 has not yet contacted the transmission gear 20, the transmission mechanism does not work, and the tension spring 25 is compressed as the suction ring 26 moves downward. When the movable seat 6 moves down to its maximum extent, the teeth at the outer end of the driven toothed plate 21 contact the transmission gear 20, and the active toothed plate 18 meshes with the transmission gear 20. At this time, the expansion mechanism has completed the action of opening the outer sleeve. The hydraulic rod 5 drives the movable seat 6 to move up, and the active toothed plate 18 drives the transmission gear 20 to rotate, which in turn drives the driven toothed plate 21 to move down. The driven toothed plate 21 pushes the suction ring 26 to move down through the connecting rod 22. The suction ring 26 separates from the press switch 27, releases the suction force, and pushes the expanded paper cup outer sleeve to the outside of the paper cup. When the movable seat 6 moves upward until the active toothed plate 18 disengages from the transmission gear 20, the tension spring 25 releases its elastic force, causing the driven toothed plate 21, connecting rod 22, and suction ring 26 to reset upward. The suction ring 26 then presses against the bottom of the movable seat 6 again, triggering the push switch 27. The suction ring 26 returns to its adsorption state, ready for the next working cycle. During the reset process, although the driven toothed plate 21 contacts the transmission gear 20 when it moves upward, the transmission gear 20 idles because the active toothed plate 18 is already above it, preventing the push action from being triggered. This ensures that the device will not push the paper cup outer sleeve erroneously during non-working phases. This application realizes the gradual expansion, sequential push, and automatic reset of the paper cup outer sleeve, effectively solving the problems of asynchronous expansion and push actions and poor linkage in traditional devices, and improving the success rate of sleeve insertion and production efficiency.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sleeve-fitting device for an expansion-type paper cup sleeve machine, comprising a fixing base (1), characterized in that: Support legs (2) are fixedly connected to the four corners of the bottom end of the fixed base (1), and connecting columns (3) are fixedly connected to the four corners of the top end of the fixed base (1). A top plate (4) is fixedly connected between the top and side ends of the connecting column (3). A hydraulic rod (5) is embedded inside the top plate (4). A movable seat (6) is fixedly connected to the bottom end of the hydraulic rod (5). A notch (7) is opened through the middle of the top of the movable seat (6). A fixed rod (8) is fixedly connected to the bottom end of the top plate (4). The fixed rod (8) is located inside the notch (7) and forms a sliding connection with the notch (7). A conical seat (9) is fixedly connected to the bottom end of the fixed rod (8). An expansion mechanism is provided on the outside of the conical seat (9). The expansion mechanism can expand the outer shell of the paper cup. The top plate (4) is provided with a connecting rod (22) inside. The moving seat (6) is provided with a transmission mechanism. The transmission mechanism controls the movement of the connecting rod (22). The bottom of the connecting rod (22) is provided with a suction ring (26). The suction ring (26) is located at the bottom of the moving seat (6). The bottom end of the moving seat (6) is fitted with a push switch (27) corresponding to the position of the suction ring (26). The suction ring (26) is provided with a push-back mechanism outside. The push-back mechanism controls the suction ring (26) to automatically reset after being pushed.

2. The inserting device for an expanding paper cup outer casing machine according to claim 1, characterized in that: The expansion mechanism includes a slide (10), a groove (11), a fixed shaft (12), a rotating arm (13), a torsion spring (14), a roller (15), and a stop plate (16). The outer end of the conical seat (9) has four slides (10) with equal distances between them. The bottom end of the movable seat (6) has four grooves (11) arranged around the conical seat (9). A fixed rod is fixedly connected to the inner wall of each groove (11). A fixed shaft (12) is rotatably connected to the outside of the fixed shaft (12). A torsion spring (14) is fixedly connected between the outer end of the rotating arm (13) and the inner wall of the groove (11). The torsion spring (14) is wound around the outside of the fixed shaft (12). A roller (15) is rotatably connected to the inner end of the rotating arm (13). The roller (15) is rolled inside the slide groove (10). A stop plate (16) is connected to the outer end of the rotating arm (13) through a bracket.

3. The inserting device for an expanding paper cup outer sleeve machine according to claim 2, characterized in that: The slide (10) is inclined, and the inclination of the slide (10) is the same as the inclination of the outer end of the conical seat (9).

4. The inserting device for an expanding paper cup outer casing machine according to claim 2, characterized in that: The torsion spring (14) is made of piano wire, and the outer end of the torsion spring (14) is coated with an anti-rust coating.

5. The inserting device for an expanding paper cup outer casing machine according to claim 2, characterized in that: The cross-section of the abutment (16) is arc-shaped, and the outer end of the abutment (16) is provided with a polished layer.

6. The inserting device for an expanding paper cup outer casing machine according to claim 1, characterized in that: The transmission mechanism includes an opening slot (17), a driving gear plate (18), a mounting bracket (19), a transmission gear (20), and a driven gear plate (21). The movable seat (6) has two opening slots (17) inside. The driving gear plate (18) is fixedly connected to the side wall of the opening slot (17). The mounting bracket (19) is fixedly connected to the bottom of the top plate (4) at the position corresponding to the opening slot (17). The transmission gear (20) is rotatably connected to the bottom of the mounting bracket (19). The transmission gear (20) is meshed with the side end of the driving gear plate (18). The driven gear plate (21) is provided at the other end of the transmission gear (20).

7. The inserting device for an expanding paper cup outer casing machine according to claim 6, characterized in that: The driven tooth plate (21) has a straight section at the lower part of its outer end. When the moving seat (6) moves down to its maximum extent, the teeth at the outer end of the driven tooth plate (21) come into contact with the transmission gear (20).

8. The inserting device for an expanding paper cup outer casing machine according to claim 6, characterized in that: The push-back mechanism includes a connecting rod (22), a connecting rod groove (23), a tension spring groove (24), and a tension spring (25). The top of the driven toothed plate (21) is fixedly connected to the connecting rod (22). The top plate (4) has a connecting rod groove (23) at the position corresponding to the connecting rod (22). The top of the top plate (4) near the top of the connecting rod groove (23) has a tension spring groove (24). The connecting rod (22) passes through the connecting rod groove (23) and extends to the outside of the tension spring groove (24). The inner top wall of the tension spring groove (24) is fixedly connected to the outer wall of the connecting rod (22). The tension spring (25) is wrapped around the outside of the connecting rod (22).

9. The inserting device for an expanding paper cup outer casing machine according to claim 8, characterized in that: The connecting rod (22), the driven toothed plate (21) and the suction ring (26) are connected in sequence to form a whole.

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