A turret transmission mechanism for a wrapping device

Abstract

The present invention discloses a turret transmission mechanism for a wrapping device in the technical field of packaging machinery, including: a bracket, a rotating shaft is provided on the bracket, a mounting frame is provided on the rotating shaft, a plurality of sets of storage frames are provided on the mounting frame, openings are provided on the side of the storage frame facing the rotating shaft, an installation box is provided on the storage frame, a moving plate is slidably provided in the installation box and an elastic member connected to the moving plate, a pull rod is provided on the side of the moving plate facing the rotating shaft, an installation groove is formed in the pull rod, and a rolling ball is provided in the installation groove. In this application, when the mounting frame moves the storage frame containing the packaging box to the upper side, the end of the pull rod close to the rotating shaft will tilt downward, causing the rolling ball to fall to the side of the installation groove close to the rotating shaft, increasing the gravity below the pull rod, causing the pull rod to drive the moving plate to move downward, and forming a negative pressure in the inner cavity of the side of the installation box close to the storage frame, so as to adsorb the packaging box in the storage frame and prevent the packaging box from being rotated and thrown out by the storage frame.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging machinery, and particularly to a turret transmission mechanism for a wrapping device. Background Art

[0002] A wrapping device is a type of packaging machinery used to wrap a protective film outside a product packaging box. During the process of winding the protective film around the packaging box, a turret transmission mechanism is used. The turret transmission mechanism mainly includes a rotating frame and a storage frame installed on the rotating frame. The packaging box is placed in the storage frame, and the driving device drives the rotating frame to rotate with the storage frame, so that the storage frame passes through the film feeding mechanism to wind the film around the outside of the packaging box in the storage frame. However, during the rotation of the rotating frame, the packaging box in the storage frame is affected by centrifugal force. Since the inlet and outlet of the storage frame are generally open, when the storage frame with the packaging box rotates from the upper position to the horizontal position for discharging, the packaging box in the storage frame is likely to fly out automatically, resulting in the packaging box deviating from the predetermined area and also causing the packaging box to be collided, which will affect the packaging box and the product inside the packaging box. Summary of the Invention

[0003] The purpose of the present invention is to provide a turret transmission mechanism for a wrapping device to solve the problem that the packaging box in the storage frame is affected by centrifugal force, and when the storage frame with the packaging box rotates from the upper position to the horizontal position for discharging, the packaging box in the storage frame is likely to fly out automatically, resulting in the packaging box deviating from the predetermined area as mentioned in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A turret transmission mechanism for a wrapping device, including: a bracket, a rotating shaft is provided on the bracket, a mounting frame is provided on the rotating shaft, several groups of storage frames are provided on the mounting frame, and the turret transmission mechanism further includes: an opening provided on the side of the storage frame facing the rotating shaft;

[0005] An installation box for covering the opening is provided on the storage frame, a moving plate for sealing and dividing the inner cavity of the installation box and an elastic member connected to the moving plate are slidably provided in the installation box, the moving path of the moving plate is perpendicular to the axis of the rotating shaft, and a pull rod extending to the outside of the installation box is provided on the side of the moving plate facing the rotating shaft;

[0006] Wherein, an installation groove is opened in the pull rod, and a rolling ball is provided in the installation groove.

[0007] Preferably, a support plate arranged along the length direction of the pull rod is provided in the installation groove, the support plate is inclined, and the distance between the installation groove and the support plate gradually decreases from the outside to the inside.

[0008] Preferably, one end of the support plate away from the rotating shaft is hinged in the installation groove, and a moving rod for driving the support plate to rotate is provided on the pull rod.

[0009] Preferably, a counterweight is slidably arranged on the installation box and has the same moving path as the pull rod. A pressing block is arranged at one end of the counterweight facing the rotating shaft. A fixing member for inserting into the counterweight and a supporting spring connected to the fixing member are slidably arranged on the installation box. A moving member moving in the same direction as the pull rod and a spring member connected to the moving member are slidably arranged on one side of the installation groove close to the rotating shaft. A pulling rope connected to the fixing member is arranged on the moving member. A screw rod is arranged on one side of the moving member facing the rotating shaft. A nut sleeve for sleeving on the screw rod is rotatably arranged on the pull rod, and a connecting block is arranged on the nut sleeve.

[0010] Preferably, the moving member is in contact with the support plate. The moving member includes a moving block, a mounting block slidably arranged on the moving block, and a return spring arranged between the moving block and the mounting block.

[0011] Preferably, an elastic element is arranged between the installation box and the counterweight. A slot is formed in the installation box. One inner wall of the slot is inclined. The inclined inner wall is parallel to the support plate. A counterweight block is slidably arranged in the slot. A connecting rope is arranged between the counterweight block and the counterweight.

[0012] Wherein, a push plate and a spring connected to the push plate are hinged in the slot.

[0013] Preferably, an air bag is arranged on the inner side wall of the storage frame, and a connecting pipe communicated with the air bag is arranged on the installation box.

[0014] Preferably, a placement groove is formed on one side of the storage frame away from the rotating shaft. The placement groove is communicated with the inner cavity of the air bag. A blocking block and a connecting spring connected to the blocking block are slidably arranged in the placement groove. A movable block for moving up and down and a buffer spring connected to the movable block are arranged below the blocking block.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: When the mounting rack moves the storage frame containing the packaging box to the upper side in this application, the end of the pull rod close to the rotating shaft will tilt downward, causing the rolling ball to fall to the side of the installation groove close to the rotating shaft, increasing the gravity below the pull rod, causing the pull rod to drive the moving plate to move downward, and forming a negative pressure in the inner cavity on the side of the installation box close to the storage frame, so as to adsorb the packaging box in the storage frame, prevent the packaging box from being rotated and thrown out by the storage frame, and protect the packaging box and the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the present invention;

[0017] Figure 2 It is a schematic connection structure diagram of the storage frame and the installation box of the present invention;

[0018] Figure 3Schematic diagram of the installation box structure of the present invention;

[0019] Figure 4 Schematic enlarged view of the structure at position A of the present invention;

[0020] Figure 5 Schematic enlarged view of the structure at position B of the present invention;

[0021] Figure 6 Schematic diagram of the connection structure between the storage frame and the airbag of the present invention.

[0022] In the figure: 1, support; 2, mounting frame; 3, storage frame; 31, opening; 4, installation box; 5, pull rod; 6, elastic member; 7, moving plate; 8, stop block; 9, counterweight member; 10, installation groove; 11, rolling ball; 12, support plate; 13, fixing member; 14, pressing block; 15, pull rope; 16, connecting block; 17, elastic element; 18, slotted opening; 19, counterweight block; 20, connecting rope; 21, pushing plate; 22, screw; 23, moving member; 24, movable block; 25, airbag. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0024] Embodiment 1:

[0025] Please refer to Figure 1 , a turret transmission mechanism for a wrapping device, including: a support 1, a rotating shaft is provided on the support 1 and a driving mechanism for driving the rotating shaft to rotate on the support 1, an installation frame 2 is sleeved on the rotating shaft, and a plurality of groups of storage frames 3 are provided on the installation frame 2 (one side of the storage frame 3 away from the rotating shaft is an opening, and a blocking block is provided on the side of the storage frame 3 facing the rotating shaft for supporting the packaging box placed in the storage frame 3, so that when the storage frame 3 rotates to the upper side, the packaging box inside the storage frame 3 will not fall).

[0026] Please refer to Figure 1 、 Figure 2 and Figure 3, an opening 31 is formed on one side of the storage box 3 facing the rotating shaft (i.e., an opening 31 is formed on the blocking block). An installation box 4 is provided on the storage box 3, and the installation box 4 covers the opening 31. A moving plate 7 is slidably provided in the installation box 4 (the moving plate 7 is used to seal and divide the inner cavity of the installation box 4. The moving plate 7 moves closer to or away from the rotating shaft. The moving direction of the moving plate 7 is perpendicular to the axis of the rotating shaft and also perpendicular to the rotating direction of the mounting bracket 2). An elastic member 6 is provided between the moving plate 7 and the installation box 4. A pull rod 5 is provided on one side of the moving plate 7 facing the rotating shaft. One end of the pull rod 5 close to the rotating shaft extends outside the installation box 4. An installation groove 10 is formed in the inner cavity of the pull rod 5, and a rolling ball 11 is provided in the installation groove 10.

[0027] Please refer to Figure 2 , Figure 3 , a support plate 12 is provided in the installation groove 10 (the support plate 12 is arranged along the length direction of the pull rod 5). The support plate 12 is inclined. The distance between the installation groove 10 and the support plate 12 gradually decreases during the process of approaching the rotating shaft. Through the arrangement of the support plate 12, when the storage box 3 containing the packaging box rotates from above to a position close to the horizontal, the support plate 12 is parallel to the ground. When the storage box 3 rotates to the horizontal position, one side of the support plate 12 facing the rolling ball 11 is inclined (the rolling ball 11 is above the support plate 12 at this time, and when the storage box 3 rotates to the horizontal position on the left side, the right side of the support plate 12 is high and the left side is low), so that the rolling ball 11 moves towards the installation groove 10 on the side close to the moving plate 7, enabling the moving plate 7 to reset under the action of the elastic member 6; and a sealing treatment is performed between the moving plate 7 and the installation box 4.

[0028] In summary, the working mode of the turret transmission mechanism is as follows: The packaging box is transported by the transmission mechanism into the right storage box 3 (the storage box 3 in the horizontal position on the right side); the driving mechanism drives the rotating shaft to drive the bracket 1 and the storage box 3 to rotate, turning the packaging box upward so that the packaging box passes through the feeding process and the wrapping film is wound around the packaging box; when the mounting bracket 2 drives the storage box 3 containing the packaging box to move above (i.e., when the storage box 3 is above the horizontal line), one end of the pull rod 5 close to the rotating shaft will incline downward, causing the rolling ball 11 to fall to the side of the installation groove 10 close to the rotating shaft, increasing the gravity below the pull rod 5, causing the pull rod 5 to drive the moving plate 7 to move downward, forming a negative pressure in the inner cavity of the installation box 4 on the side close to the storage box 3, adsorbing the packaging box in the storage box 3 (reducing the probability of the packaging box being thrown out); when the mounting bracket 2 drives the storage box 3 containing the packaging box to rotate to the horizontal position, the pull rod 5 is parallel to the ground, the rolling ball 11 rolls to the side close to the moving plate 7, and the moving plate 7 resets under the action of the elastic member 6, causing the adsorption force inside the installation box 4 to disappear; then the packaging box is removed from the storage box 3 to complete the processing process of wrapping the outer side of the packaging box with film.

[0029] In this embodiment, as Figure 3 and Figure 5As shown, one end of the support plate 12 away from the rotating shaft is hinged in the installation groove 10. A moving rod is provided on the pull rod 5, and the moving rod is connected to the support plate 12. A bolt for fixing the moving rod is screwed on the pull rod 5. Loosen the bolt and move the moving rod to drive the support plate 12 to rotate, so as to change the inclination angle of the support plate 12.

[0030] Embodiment 2:

[0031] Please refer to Figure 2 、 Figure 3 、 Figure 4 and Figure 5 . A counterweight 9 is slidably provided on the installation box 4 (the moving direction of the counterweight 9 is the same as the moving path of the pull rod 5). A pressing block 14 is provided at one end of the counterweight 9 facing the rotating shaft. A fixing member 13 for inserting into the counterweight 9 is slidably provided on the installation box 4 (a groove is provided on one side of the counterweight 9 close to the fixing member 13, and one end of the fixing member 13 is inserted into the groove to fix the counterweight 9 and limit the movement of the counterweight 9). A support spring is provided between the installation box 4 and the fixing member 13. A moving member 23 is slidably provided on one side of the installation groove 10 close to the rotating shaft (the moving direction of the moving member 23 is the same as the moving direction of the pull rod 5). A spring member is installed between the installation groove 10 and the moving member 23. A pull rope 15 is provided between the moving member 23 and the fixing member 13. A screw rod 22 is provided on one side of the moving member 23 facing the rotating shaft. A threaded sleeve is rotatably provided on the pull rod 5, and the threaded sleeve is sleeved on the screw rod 22. A connecting block 16 is provided on the threaded sleeve. When the storage frame 3 rotates above the horizontal line, one end of the pull rod 5 close to the rotating shaft inclines downward, and the rolling ball 11 moves and presses on the moving member 23, causing the moving member 23 to move close to the rotating shaft, pulling the pull rope 15, moving the fixing member 13 out of the groove, so that the restriction on the counterweight 9 disappears. Under the action of gravity, the counterweight 9 moves downward. And the movement of the moving member 23 will cause the screw rod 22 to move, causing the threaded sleeve to drive the connecting block 16 to rotate, so that the connecting block 16 moves below the pressing block 14. The downward movement of the counterweight 9 will cause the pressing block 14 to contact the connecting block 16 and push the connecting block 16 downward, ensuring that the moving plate 7 will move downward, generating a suction force at the installation box 4.

[0032] In this embodiment, as Figure 5 shown, the moving member 23 is in contact with the support plate 12. The moving member 23 includes a moving block and a mounting block slidably provided on the moving block. The moving member 23 is telescopic, so that the moving member 23 can contract when the support plate 12 moves, without affecting the movement of the moving member 23.

[0033] In this embodiment, as Figure 3 and Figure 4As shown, an elastic element 17 is provided between the mounting box 4 and the counterweight 9. A slotted opening 18 is formed in the mounting box 4. The inner wall on one side of the slotted opening 18 is inclined. The inclined inner wall is parallel to the support plate 12. A counterweight block 19 is slidably arranged in the slotted opening 18. A connecting rope 20 is provided between the counterweight block 19 and the counterweight 9. A push plate 21 and a spring connected to the push plate 21 are hinged in the slotted opening 18. When the storage frame 3 rotates from above to a position close to the horizontal, the elastic element 17 provides a pulling force to the counterweight 9 to reset the counterweight 9. When the storage frame 3 rotates to the horizontal position, due to the inclination of the inner wall of the slotted opening 18, the counterweight block 19 slides outward away from the rotating shaft. Through the connecting rope 20, it will act on the counterweight 9 to drive the counterweight 9 to move and reset. And the push plate 21 can also push the counterweight block 19 to make the counterweight block 19 move rapidly away from the rotating shaft.

[0034] Embodiment 3:

[0035] Please refer to Figure 2 and Figure 6 , an airbag 25 is provided on the inner side wall of the storage frame 3, and a connecting pipe communicating with the airbag 25 is provided on the mounting box 4. When the pull rod 5 pulls the moving plate 7 to move, creating a negative pressure at the side of the mounting box 4 close to the storage frame 3, the air in the inner cavity of the mounting box 4 on the side close to the rotating shaft will be squeezed into the airbag 25, causing it to expand, increasing the pressure of the airbag 25 in contact with the packaging box, and providing an additional pressure to the packaging box inside the storage frame 3, increasing the stability of the fixation of the packaging box.

[0036] In this embodiment, as Figure 6 shown, an accommodation groove is formed on the side of the storage frame 3 away from the rotating shaft. The accommodation groove communicates with the inner cavity of the airbag 25. A blocking block 8 is slidably arranged in the accommodation groove. A connecting spring is installed between the blocking block 8 and the inner cavity of the accommodation groove. A movable block 24 is slidably arranged below the blocking block 8. The movable block 24 can move up and down. A buffer spring is installed between the blocking block 8 and the movable block 24. When the packaging box enters the storage frame 3, it will squeeze the airbag 25, squeezing some of the gas inside the airbag 25 into the accommodation groove, used to push the blocking block 8 to move outward. When the storage frame 3 rotates to the horizontal position, the outwardly moved blocking block 8 blocks (the blocking block 8 contacts the transmission area, and the transmission area is used to transmit the packaging box), so that the storage frame 3 rotates to the horizontal without misalignment. When the packaging box is removed from the storage frame 3, the extrusion on the airbag 25 disappears. Under the action of the connecting spring, the blocking block 8 moves into the accommodation groove, enabling the storage frame 3 to continue rotating without being affected. And when the blocking block 8 blocks, the movable block 24 directly contacts the transmission area. When contacting, the movable block 24 moves closer to the blocking block 8, causing the buffer spring to contract, achieving a buffering effect and reducing the vibration force received at the storage frame 3.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A turret transmission mechanism for a wrapping device, comprising: Bracket (1), a rotating shaft is provided on the bracket (1), a mounting frame (2) is provided on the rotating shaft, and a plurality of groups of storage frames (3) are provided on the mounting frame (2), characterized in that: the turret transmission mechanism further includes: an opening (31) provided on the side of the storage frame (3) facing the rotating shaft; A mounting box (4) for covering the opening (31) is provided on the storage frame (3), a moving plate (7) for sealing and partitioning the inner cavity of the mounting box (4) and an elastic member (6) connected to the moving plate (7) are slidably provided in the mounting box (4), the moving path of the moving plate (7) is perpendicular to the axis of the rotating shaft, and a pull rod (5) extending to the outside of the mounting box (4) is provided on the side of the moving plate (7) facing the rotating shaft; Wherein, a mounting groove (10) is formed in the pull rod (5), and a rolling ball (11) is provided in the mounting groove (10); A support plate (12) arranged along the length direction of the pull rod (5) is provided in the mounting groove (10), the support plate (12) is inclined, and the distance between the mounting groove (10) and the support plate (12) gradually decreases from outside to inside; One end of the support plate (12) away from the rotating shaft is hinged in the mounting groove (10), and a moving rod for driving the support plate (12) to rotate is provided on the pull rod (5); A counterweight (9) having the same moving path as the pull rod (5) is slidably provided on the mounting box (4), a pressing block (14) is provided at one end of the counterweight (9) facing the rotating shaft, a fixing member (13) for inserting into the counterweight (9) and a support spring connected to the fixing member (13) are slidably provided on the mounting box (4), a moving member (23) having the same moving direction as the pull rod (5) and a spring member connected to the moving member (23) are slidably provided on the side of the mounting groove (10) close to the rotating shaft, a pull rope (15) connected to the fixing member (13) is provided on the moving member (23), a screw rod (22) is provided on the side of the moving member (23) facing the rotating shaft, and a screw sleeve for sleeving on the screw rod (22) is rotatably provided on the pull rod (5), and a connecting block (16) is provided on the screw sleeve.

2. The turret transmission mechanism for a wrapping device according to claim 1, characterized in that: The moving member (23) is in contact with the support plate (12), and the moving member (23) includes a moving block, a mounting block slidably provided on the moving block, and a return spring provided between the moving block and the mounting block.

3. The turret transmission mechanism for a wrapping device according to claim 1, characterized in that: An elastic element (17) is provided between the mounting box (4) and the counterweight (9), a slot (18) is formed in the mounting box (4), one inner wall of the slot (18) is inclined, the inner wall is parallel to the support plate (12), a counterweight block (19) is slidably provided in the slot (18), and a connecting rope (20) is provided between the counterweight block (19) and the counterweight (9); Wherein, a push plate (21) and a spring connected to the push plate (21) are hinged in the slot (18).

4. A turret transmission mechanism for a wrapping device according to claim 1, characterized in that: An air bag (25) is provided on the inner side wall of the storage frame (3), and a connecting pipe communicating with the air bag (25) is provided on the mounting box (4).

5. A turret transmission mechanism for a wrapping device according to claim 4, characterized in that: On one side of the storage box (3) far from the rotating shaft, a placement groove is formed, and the placement groove communicates with the inner cavity of the airbag (25). A blocking block (8) and a connecting spring connected to the blocking block (8) are slidably arranged in the placement groove. A movable block (24) for moving up and down and a buffer spring connected to the movable block (24) are arranged below the blocking block (8).

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