A double-cam mechanism for a fully automatic packaging machine

Abstract

The present invention relates to a double-cam mechanism for a fully automatic packaging machine. The present invention includes a driving motor, a double swing arm, and a swing arm shaft. The driving end of the driving motor is connected to a camshaft, and the camshaft is connected to a first cam and a second cam. The double swing arm is swingably connected to the swing arm shaft. The swing arm shaft is connected to a first single swing arm and a third single swing arm, and the double swing arm is connected to a second single swing arm and a fourth single swing arm. The first jaw assembly includes a first jaw swing arm shaft, a first cross beam swingably connected to the first jaw swing arm shaft, and a first jaw swing arm and a second jaw swing arm swingably connected to both ends of the first cross beam. The second jaw assembly includes a second jaw swing arm shaft, a second cross beam swingably connected to the second jaw swing arm shaft, and a third jaw swing arm and a fourth jaw swing arm swingably connected to both ends of the second cross beam. The double-cam structure of the present invention can conveniently achieve the motion matching between the two jaws, and the overall structure is simple.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging machines, and in particular to a double cam mechanism for a fully automatic packaging machine. Background Art

[0002] During the fully automatic packaging production process of powders and granules, a high-speed fully automatic packaging machine is used. This packaging machine integrates a variety of bag-making and packaging processes: film feeding, corner heat sealing of the bag, bottom heat sealing of the bag, cutting, bottom cooling of the bag, opening for loading, mouth heat sealing of the bag, etc. With high efficiency, integration, and systematization, this fully automatic packaging machine can help users achieve clean, airtight, and tight packaging. This fully automatic packaging machine has gradually become a trend.

[0003] In order to complete processes such as opening for loading and mouth heat sealing of the bag, while taking into account high efficiency and continuity, the packaging machine usually requires two pairs of grippers. During the same period of time, one pair of grippers transports the manufactured empty bag from the bottom heat sealing position to the loading position, and the other pair of grippers transports the full bag after loading from the loading position to the mouth heat sealing position. Due to the need to consider complex situations such as gripper movement, bottom cooling of the bag, opening for loading, and mouth heat sealing of the bag during this period of time, the grippers cannot move at a constant speed, so a cam drive is selected in terms of structure.

[0004] Based on the fact that the movements of the two pairs of grippers are somewhat related, a single cam can be used to achieve it, but the structure is complex, the installation is inconvenient, it is difficult to adjust, and the requirements for part processing are high. Summary of the Invention

[0005] In view of the above technical requirements for the bag-making - filling - sealing integrated fully automatic packaging machine, the present invention provides a double cam mechanism for a fully automatic packaging machine, which realizes the linkage between the two pairs of grippers by controlling the movement of a pair of grippers through two cams respectively, and the overall structure is simple and easy to install.

[0006] To solve the above technical problems, the present invention provides a double cam mechanism for a fully automatic packaging machine, including: a driving motor, a double swing arm, a swing arm shaft, a first gripper assembly, and a second gripper assembly. The driving end of the driving motor is connected to a cam shaft, and the cam shaft is connected to a first cam and a second cam;

[0007] The double swing arm is swingably connected to the swing arm shaft. The swing arm shaft is connected to a first single swing arm and a third single swing arm, and the double swing arm is connected to a second single swing arm and a fourth single swing arm. The rotation of the first cam and the second cam drives the double swing arm to swing;

[0008] The first gripper assembly includes a first gripper swing arm shaft, a first cross beam swingably connected to the first gripper swing arm shaft, a first gripper swing arm and a second gripper swing arm swingably connected to both ends of the first cross beam. Both the first gripper swing arm and the second gripper swing arm are connected to a first gripper;

[0009] The second jaw assembly includes a second jaw swing arm shaft, a second cross beam swingably connected to the second jaw swing arm shaft, a third jaw swing arm and a fourth jaw swing arm swingably connected to both ends of the second cross beam, and second jaws are connected to both the third jaw swing arm and the fourth jaw swing arm;

[0010] The first jaw swing arm and the third jaw swing arm are respectively connected to the first single swing arm and the second single swing arm, and the second jaw swing arm and the fourth jaw swing arm are respectively connected to the first single swing arm and the fourth single swing arm.

[0011] In an embodiment of the present invention, the first cam and the second cam are connected with a cam flange, and the cam flange is connected with a tension sleeve connected to the cam shaft.

[0012] In an embodiment of the present invention, the cam shaft is further rotatably connected with a cam shaft bearing seat arranged on one side of the first cam.

[0013] In an embodiment of the present invention, both ends of the swing arm shaft are connected with swing arm bearing seats, and the double swing arm is rotatably connected to the swing arm shaft.

[0014] In an embodiment of the present invention, the first cam and the second cam are both provided with cam grooves, and the first single swing arm and the fourth single swing arm are both provided with followers cooperating with the cam grooves.

[0015] In an embodiment of the present invention, the follower is a roller.

[0016] In an embodiment of the present invention, it further includes a first long connecting rod, a first short connecting rod, a second long connecting rod and a second short connecting rod. The first single swing arm is connected to the first jaw swing arm through the first short connecting rod, the second single swing arm is connected to the third jaw swing arm through the first long connecting rod, the third single swing arm is connected to the second jaw swing arm through the second short connecting rod, and the fourth single swing arm is connected to the fourth jaw swing arm through the second long connecting rod.

[0017] In an embodiment of the present invention, the first jaw assembly includes a first air cylinder, a first air cylinder push plate connected to the driving end of the first air cylinder, and a first push plate connecting rod connected to the first air cylinder push plate. The first air cylinder is connected to the first cross beam, and the first air cylinder push plate is respectively connected to the first jaw swing arm and the second jaw swing arm through the first push plate connecting rod; the second jaw assembly includes a second air cylinder, a second air cylinder push plate connected to the driving end of the second air cylinder, and a second push plate connecting rod connected to the second air cylinder push plate. The second air cylinder is connected to the second cross beam, and the second air cylinder push plate is respectively connected to the third jaw swing arm and the fourth jaw swing arm through the second push plate connecting rod.

[0018] In an embodiment of the present invention, one end of each of the first jaw swing arm and the second jaw swing arm is provided with a first jaw connecting member. The first jaw connecting member is rotatably connected to one end of the first jaw swing arm and the second jaw swing arm along directions parallel and perpendicular to the axis of the first jaw swing arm shaft. The first jaw connecting member includes a first connecting plate and a first connecting side arm connected to the first connecting plate. The first connecting side arm is hinged with a first connecting rod and a second connecting rod. The first connecting rod is hinged to the first jaw swing arm shaft, and the second connecting rod is hinged to the external frame.

[0019] In an embodiment of the present invention, one end of each of the third jaw swing arm and the fourth jaw swing arm is provided with a second jaw connecting member. The second jaw connecting member is rotatably connected to one end of the third jaw swing arm and the fourth jaw swing arm along directions parallel and perpendicular to the axis of the second jaw swing arm shaft. The second jaw connecting member includes a second connecting plate and a second connecting side arm connected to the second connecting plate. The second connecting side arm is hinged with a third connecting rod and a fourth connecting rod. The third connecting rod is hinged to the second jaw swing arm shaft, and the fourth connecting rod is hinged to the external frame.

[0020] The above technical solution of the present invention has the following advantages compared with the prior art:

[0021] A double-cam mechanism for a full-automatic packaging machine according to the present invention adopts a double-cam structure. The camshaft is driven to rotate by a motor, driving two cams fixed on the camshaft to move. Each cam controls the movement of a single jaw respectively. Since the cams are fixed on the camshaft through a tensioning sleeve, the position of each cam on the camshaft can be adjusted arbitrarily, and the relative position between the two cams can also be adjusted through the tensioning sleeve. The double-cam structure can conveniently realize the movement matching between the two jaws. The overall structure of the present invention is simple, the design is reasonable, the control and adjustment are convenient, and it has the advantage that the parts are easy to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the content of the present invention easier to be clearly understood, the following further details the present invention according to specific embodiments of the present invention in combination with the accompanying drawings, where

[0023] Figure 1 is a schematic diagram of the overall structure of the double-cam mechanism.

[0024] Figure 2 is a schematic diagram of the structure of the other perspective of the double-cam mechanism.

[0025] Figure 3 is a schematic diagram of the structure of the first jaw assembly.

[0026] Figure 4 is a schematic diagram of the structure of the second jaw assembly.

[0027] Description of the reference numerals in the drawings: 11, drive motor; 12, camshaft; 13, first cam; 14, second cam; 15, cam flange; 16, tensioning sleeve; 17, camshaft bearing block; 18, swing arm bearing block; 19, follower.

[0028] 2, double swing arm; 3, swing arm shaft;

[0029] 4, first jaw assembly; 41, first jaw swing arm shaft; 42, first cross beam; 43, first jaw swing arm; 44, second jaw swing arm; 45, first jaw; 46, first long connecting rod; 47, first short connecting rod; 48, first cylinder; 481, first cylinder push plate; 482, first push plate connecting rod; 49, first jaw connecting piece; 491, first connecting plate; 492, first connecting side arm; 493, first connecting rod; 494, second connecting rod;

[0030] 5, second jaw assembly; 51, second jaw swing arm shaft; 52, second cross beam; 53, third jaw swing arm; 54, fourth jaw swing arm; 55, second jaw; 56, second long connecting rod; 57, second short connecting rod; 58, second cylinder; 581, second cylinder push plate; 582, second push plate connecting rod; 59, second jaw connecting piece; 591, second connecting plate; 592, second connecting side arm; 593, third connecting rod; 594, third connecting rod;

[0031] 6, first single swing arm; 7, second single swing arm; 8, third single swing arm; 9, fourth single swing arm. Detailed implementation mode

[0032] The present invention will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present invention and be able to implement it, but the embodiments cited are not intended to limit the present invention.

[0033] Referring to Figures 1 to 4 As shown, a double-cam mechanism for a full-automatic packaging machine of the present invention includes: a drive motor 11, a double swing arm 2, a swing arm shaft 3, a first jaw assembly 4 and a second jaw assembly 5. The drive end of the drive motor 11 is connected to a camshaft 12, and the camshaft 12 is connected to a first cam 13 and a second cam 14;

[0034] The double swing arm 2 is swingably connected to the swing arm shaft 3. The swing arm shaft 3 is connected to a first single swing arm 6 and a third single swing arm 8. The double swing arm 2 is connected to a second single swing arm 7 and a fourth single swing arm 9. The rotation of the first cam 13 and the second cam 14 drives the double swing arm 2 to swing;

[0035] The first jaw assembly 4 includes a first jaw swing arm shaft 41, a first cross beam 42 swingably connected to the first jaw swing arm shaft 41, first jaw swing arms 43 and second jaw swing arms 44 swingably connected to both ends of the first cross beam 42, and a first jaw 45 is connected to both the first jaw swing arm 43 and the second jaw swing arm 44;

[0036] The second jaw assembly 5 includes a second jaw swing arm shaft 51, a second cross beam 52 swingably connected to the second jaw swing arm shaft 51, third jaw swing arms 53 and fourth jaw swing arms 54 swingably connected to both ends of the second cross beam 52, and a second jaw 55 is connected to both the third jaw swing arm 53 and the fourth jaw swing arm 54;

[0037] The first jaw swing arm 43 and the third jaw swing arm 53 are respectively connected to a first single swing arm 6 and a second single swing arm 7, and the second jaw swing arm 44 and the fourth jaw swing arm 54 are respectively connected to a third single swing arm 8 and a fourth single swing arm 9.

[0038] Specifically, the first cam 13 and the second cam 14 are connected with a cam flange 15, and the cam flange 15 is connected with a tension sleeve 16 connected to the camshaft 12.

[0039] Specifically, the camshaft 12 is also rotatably connected with a camshaft bearing seat 17 arranged on one side of the first cam 13.

[0040] Specifically, both ends of the swing arm shaft 3 are connected with swing arm bearing seats 18, and the double swing arm 2 is rotatably connected to the swing arm shaft 3.

[0041] Specifically, the first cam 13 and the second cam 14 are both provided with cam grooves, and the first single swing arm 6 and the fourth single swing arm 9 are both provided with followers 19 that cooperate with the cam grooves, and the followers 19 are rollers. With the above settings, as the first cam 13 and the second cam 14 rotate, the movement of the followers 19 on the first single swing arm 6 and the fourth single swing arm 9 in the cam grooves can drive the swinging of the first jaw swing arm 43 and the fourth jaw swing arm 54.

[0042] Specifically, it further includes a first long connecting rod 46, a first short connecting rod 47, a second long connecting rod 56 and a second short connecting rod 57. The first single swing arm 6 is connected to the first jaw swing arm 43 through the first short connecting rod 47, the second single swing arm 7 is connected to the third jaw swing arm 53 through the first long connecting rod 46, the third single swing arm 8 is connected to the second jaw swing arm 44 through the second short connecting rod 57, and the fourth single swing arm 9 is connected to the fourth jaw swing arm 54 through the second long connecting rod 56.

[0043] Specifically, the first jaw assembly 4 includes a first cylinder 48, a first cylinder push plate 481 connected to the driving end of the first cylinder 48, and a first push plate connecting rod 482 connected to the first cylinder push plate 481. The first cylinder 48 is connected to the first cross beam 42. The first cylinder push plate 481 is respectively connected to a first jaw swing arm 43 and a second jaw swing arm 44 through the first push plate connecting rod 482. The second jaw assembly 5 includes a second cylinder 58, a second cylinder push plate 581 connected to the driving end of the second cylinder 58, and a second push plate connecting rod 582 connected to the second cylinder push plate 581. The second cylinder is connected to the second cross beam 52. The second cylinder push plate 581 is respectively connected to a third jaw swing arm 53 and a fourth jaw swing arm 54 through the second push plate connecting rod 582. Through the above settings, as the first cylinder 48 expands and contracts, the first cylinder push plate 481 pushes the first jaw swing arm 43 and the second jaw swing arm 44 through the first push plate connecting rod 482 to adjust the relative distance between the first jaws 45. As the second cylinder 58 expands and contracts, the second cylinder push plate 581 pushes the third jaw swing arm 53 and the fourth jaw swing arm 54 through the second push plate connecting rod 582 to adjust the relative distance between the second jaws 55.

[0044] Specifically, one end of each of the first jaw swing arm 43 and the second jaw swing arm 44 is provided with a first jaw connecting piece 49. The first jaw connecting piece 49 is rotatably connected to one end of the first jaw swing arm 43 and the second jaw swing arm 44 along directions parallel and perpendicular to the axis of the first jaw swing arm shaft 41. The first jaw connecting piece 49 includes a first connecting plate 491 and a first connecting side arm 492 connected to the first connecting plate 491. The first connecting side arm 492 is hinged with a first connecting rod 493 and a second connecting rod 494. The first connecting rod 493 is hinged to the first jaw swing arm shaft 41, and the second connecting rod 494 is hinged to the external frame (the frame where the overall mechanism is installed). By providing the first jaw connecting piece 49, it is ensured that the first jaws 45 can maintain a horizontal state whether the first jaw assembly 4 as a whole swings freely around the first jaw swing arm shaft 41 or the first jaw swing arm 43 and the second jaw swing arm 44 swing on the first cross beam 42.

[0045] Specifically, second jaw connectors 59 are provided at one ends of the third jaw swing arm 53 and the fourth jaw swing arm 54. The second jaw connectors 59 are rotationally connected to one ends of the third jaw swing arm 53 and the fourth jaw swing arm 54 along directions parallel and perpendicular to the axis of the second jaw swing arm shaft 51. The second jaw connector 59 includes a second connecting plate 591 and second connecting side arms 592 connected to the second connecting plate 591. Third link 593 and fourth link 594 are hinged to the second connecting side arms 592. The third link 593 is hinged to the second jaw swing arm shaft 51, and the fourth link 594 is hinged to the outer frame. By providing the second jaw connectors 59, it is ensured that the second jaw 55 can remain horizontal whether the second jaw assembly 5 swings freely about the second jaw swing arm shaft 51 as the center or the third jaw swing arm 53 and the fourth jaw swing arm 54 swing on the second cross beam 52.

[0046] The main operation process of the present invention is as follows: The drive motor 11 drives the first cam 13 and the second cam 14 to rotate via the camshaft 12. The movement of the first cam 13 drives the follower 19 on the first single swing arm 6 to move in the cam groove, causing the first single swing arm 6 and the third single swing arm 8 to swing. The first short link 47 and the second short link 57 drive the first jaw 45 to swing. The movement of the second cam 14 drives the follower 19 on the fourth single swing arm 9 to move in the cam groove, causing the second single swing arm 7 and the fourth single swing arm 9 to swing. The first long link 46 and the second long link 56 drive the second jaw 55 to swing.

[0047] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A double cam mechanism for a fully automatic packaging machine, characterized in that, Including: A drive motor (11), a double swing arm (2), a swing arm shaft (3), a first jaw assembly (4), and a second jaw assembly (5). The drive end of the drive motor (11) is connected to a camshaft (12), and the camshaft (12) is connected to a first cam (13) and a second cam (14); The double swing arm (2) is swingably connected to the swing arm shaft (3). The swing arm shaft (3) is connected to a first single swing arm (6) and a third single swing arm (8). The double swing arm (2) is connected to a second single swing arm (7) and a fourth single swing arm (9). The rotation of the first cam (13) and the second cam (14) drives the double swing arm (2) to swing; The first jaw assembly (4) includes a first jaw swing arm shaft (41), a first cross beam (42) swingably connected to the first jaw swing arm shaft (41), a first jaw swing arm (43) and a second jaw swing arm (44) swingably connected to both ends of the first cross beam (42). Both the first jaw swing arm (43) and the second jaw swing arm (44) are connected to a first jaw (45); The second jaw assembly (5) includes a second jaw swing arm shaft (51), a second cross beam (52) swingably connected to the second jaw swing arm shaft (51), a third jaw swing arm (53) and a fourth jaw swing arm (54) swingably connected to both ends of the second cross beam (52). Both the third jaw swing arm (53) and the fourth jaw swing arm (54) are connected to a second jaw (55); The first jaw swing arm (43) and the third jaw swing arm (53) are respectively connected to the first single swing arm (6) and the second single swing arm (7), and the second jaw swing arm (44) and the fourth jaw swing arm (54) are respectively connected to the third single swing arm (8) and the fourth single swing arm (9); It further includes a first long connecting rod (46), a first short connecting rod (47), a second long connecting rod (56), and a second short connecting rod (57). The first single swing arm (6) is connected to the first jaw swing arm (43) through the first short connecting rod (47). The second single swing arm (7) is connected to the third jaw swing arm (53) through the first long connecting rod (46). The third single swing arm (8) is connected to the second jaw swing arm (44) through the second short connecting rod (57). The fourth single swing arm (9) is connected to the fourth jaw swing arm (54) through the second long connecting rod (56); Both the first cam (13) and the second cam (14) are provided with cam grooves, and both the first single swing arm (6) and the fourth single swing arm (9) are provided with followers (19) that cooperate with the cam grooves.

2. The double cam mechanism for a fully automatic packaging machine according to claim 1, characterized in that, The first cam (13) and the second cam (14) are connected to a cam flange (15), and the cam flange (15) is connected to a tensioning sleeve (16) connected to the camshaft (12).

3. A double cam mechanism for a full-automatic packaging machine according to claim 1, characterized in that, The camshaft (12) is further rotatably connected to a camshaft bearing seat (17) provided on one side of the first cam (13).

4. The double-cam mechanism for a full-automatic packaging machine according to claim 1, characterized in that, Both ends of the swing arm shaft (3) are connected to swing arm bearing seats (18), and the double swing arm (2) is rotatably connected to the swing arm shaft (3).

5. A double cam mechanism for a full-automatic packaging machine according to claim 1, characterized in that, The follower (19) is a roller.

6. The double-cam mechanism for a fully automatic packaging machine according to claim 1, characterized in that, The first jaw assembly (4) includes a first cylinder (48), a first cylinder push plate (481) connected to the driving end of the first cylinder (48), and a first push plate connecting rod (482) connected to the first cylinder push plate (481). The first cylinder (48) is connected to the first cross beam (42). The first cylinder push plate (481) is respectively connected to a first jaw swing arm (43) and a second jaw swing arm (44) through the first push plate connecting rod (482). The second jaw assembly (5) includes a second cylinder (58), a second cylinder push plate (581) connected to the driving end of the second cylinder (58), and a second push plate connecting rod (582) connected to the second cylinder push plate (581). The second cylinder is connected to the second cross beam (52). The second cylinder push plate (581) is respectively connected to a third jaw swing arm (53) and a fourth jaw swing arm (54) through the second push plate connecting rod (582).

7. A double-cam mechanism for a fully automatic packaging machine according to claim 1, characterized in that, One end of each of the first jaw swing arm (43) and the second jaw swing arm (44) is provided with a first jaw connecting member (49). The first jaw connecting member (49) is rotatably connected to one end of the first jaw swing arm (43) and the second jaw swing arm (44) along directions parallel and perpendicular to the axis of the first jaw swing arm shaft (41). The first jaw connecting member (49) includes a first connecting plate (491) and a first connecting side arm (492) connected to the first connecting plate (491). The first connecting side arm (492) is hinged with a first connecting rod (493) and a second connecting rod (494). The first connecting rod (493) is hinged to the first jaw swing arm shaft (41), and the second connecting rod (494) is hinged to the external frame.

8. A double cam mechanism for a full-automatic packaging machine according to claim 1, characterized in that, One end of each of the third jaw swing arm (53) and the fourth jaw swing arm (54) is provided with a second jaw connecting member (59). The second jaw connecting member (59) is rotatably connected to one end of the third jaw swing arm (53) and the fourth jaw swing arm (54) along directions parallel and perpendicular to the axis of the second jaw swing arm shaft (51). The second jaw connecting member (59) includes a second connecting plate (591) and a second connecting side arm (592) connected to the second connecting plate (591). The second connecting side arm (592) is hinged with a third connecting rod (593) and a fourth connecting rod (594). The third connecting rod (593) is hinged to the second jaw swing arm shaft (51), and the fourth connecting rod (594) is hinged to the external frame.

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