Swing arm mechanism for bag making machine

Abstract

The utility model relates to the technical field of plastic product manufacturing, and discloses a swing arm mechanism for a bag making machine, which comprises a rack, the rack is provided with a mounting frame, and the mounting frame comprises two swing arms and a connecting arm for connecting the two swing arms. The winding machine has the following advantages and effects that after the winding drum is unwound, the driving mechanism is closed, the overturning driving piece drives the swing arm to overturn downwards, a worker only needs to directly take off the unwinding roller, assemble the unwinding roller with the winding drum in the placing groove of the movable working table and then push the movable working table to move to a positioning mark on the ground, and then the winding drum is overturned downwards. The overturning driving part drives the swing arm to swing upwards, the unwinding roller is supported through the notch, the positioning groove in the positioning seat limits the position of the positioning disc of the unwinding roller, the driven gear on the unwinding roller is meshed with the driving gear on the rotating shaft, and the driving mechanism can drive the unwinding roller to rotate to achieve unwinding. The effects that the winding drum is convenient to replace, time and labor are saved, and the replacement operation efficiency is high are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic product manufacturing, in particular to a swing arm mechanism for a bag making machine. Background Art

[0002] Bag making machine is a device for making various plastic packaging bags, usually composed of feeding mechanism, heat sealing mechanism, cutting mechanism, traction mechanism, etc. The feeding mechanism unwinds and conveys the plastic film, the heat sealing mechanism is used to seal the plastic film, the cutting mechanism cuts the continuous plastic bags into individual finished bags, and the traction mechanism is used to pull the continuous plastic bags forward.

[0003] The material conveyed in the feeding mechanism is a plastic film wound into a roll. When the roll is unwound, a new roll needs to be replaced. In the prior art, the unwinding roller is usually manually disassembled by the staff and then installed manually. Since the roll is generally heavy, the operation is time-consuming and labor-intensive, and the efficiency is low. Utility Model Content

[0004] The utility model aims to provide a swing arm mechanism for a bag making machine, which has the effects of conveniently replacing a roll, saving time and labor, and high replacement operation efficiency.

[0005] The above technical purpose of the utility model is achieved through the following technical scheme: a swing arm mechanism for a bag making machine, comprising a frame, the frame is provided with a mounting frame, the mounting frame includes two swing arms and a connecting arm connecting the two swing arms, the swing arms are hinged on the frame, each of the swing arms is provided with a slot, the mounting frame is provided with a unwinding roller embedded in the slot, and the frame is provided with a flip driving member for driving the swing arms to swing.

[0006] By adopting the above technical solution, the reel includes a cylinder body and a plastic film wound on the cylinder body. When a new reel is needed after the reel is unwound, since the plastic film in the reel has basically been unwound, the staff can easily pick up the unwinding roller and make it separate from the notches on the two swing arms. The flip drive drives the swing arm to swing downward, and the staff installs the unwinding roller on the new reel and moves it between the two swing arms. The flip drive drives the swing arm to swing upward until the notch on the swing arm buckles the unwinding roller and lifts the unwinding roller, completing the operation of replacing the reel.

[0007] The utility model is further configured as follows: it also includes a mobile workbench, casters are installed at the bottom of the mobile workbench, and the mobile workbench is also provided with a placement groove.

[0008] By adopting the above technical solution, the new roll is placed in the placement groove, and after the unwinding roller is removed from the notch of the swing arm, the unwinding roller is assembled with the new roll, and then the mobile workbench is pushed to move it between the two swing arms.

[0009] A further setting of the present utility model is that the width of the movable workbench is smaller than the distance between the two swing arms.

[0010] A further setting of the present utility model is that it further includes a ground positioning mark, and the ground positioning mark is used to show the positioning position.

[0011] A further setting of the present utility model is that a position mark one is provided on the unwinding roller, and a position mark two is provided on the movable workbench.

[0012] By adopting the above technical solution, it is convenient to assemble the unwinding roller and the winding drum to the appropriate positions.

[0013] A further setting of the present utility model is that a positioning seat is fixed on the swing arm, a positioning groove is formed in the positioning seat, a positioning disk is fixed on the unwinding roller, and the edge of the positioning disk is embedded in the positioning groove.

[0014] By adopting the above technical solution, the positioning disk is embedded in the positioning groove, which neither affects the rotation of the unwinding roller nor restricts the movement of the unwinding roller in the length direction of the unwinding roller.

[0015] A further setting of the present utility model is that the flipping driving member is a cylinder, the cylinder is hinged to the frame, and the piston rod of the cylinder is hinged to the swing arm.

[0016] A further setting of the present utility model is that the number of cylinders is two and they respectively correspond to the two swing arms one by one.

[0017] A further setting of the present utility model is that a driving mechanism is provided on the frame, and the driving mechanism includes a rotating shaft rotatably connected to the frame, a driving gear fixed to the rotating shaft, a driven gear installed on the unwinding roller, and the driving gear meshes with the driven gear.

[0018] By adopting the above technical solution, the driving mechanism drives the rotation of the rotating shaft and the driving gear, drives the rotation of the driven gear and the unwinding roller, and realizes unwinding. At the same time, when disassembling the unwinding roller, the staff only needs to directly remove the unwinding roller.

[0019] A further setting of the present utility model is that the driving mechanism includes a motor fixed to the frame, a first pulley fixed to the output shaft of the motor, a second pulley fixed to the rotating shaft, and a transmission belt installed between the first pulley and the second pulley.

[0020] The beneficial effects of the present utility model are as follows: After the unwinding of the reel is completed, the driving mechanism is turned off, and the flipping driving member drives the swing arm to flip downward. The staff only needs to directly remove the unwinding roller, assemble it with the reel in the placement groove of the mobile workbench, then push the mobile workbench to move to the ground positioning mark, and the flipping driving member drives the swing arm to swing upward. The unwinding roller is lifted through the notch, and the positioning groove on the positioning seat restricts the position of the positioning disc of the unwinding roller. The driven gear on the unwinding roller meshes with the driving gear on the rotating shaft, and the driving mechanism can drive the unwinding roller to rotate to achieve unwinding, achieving the effects of convenient reel replacement, time and labor saving, and high replacement operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 is a schematic structural diagram of the present utility model.

[0023] Figure 2 is a schematic diagram of the positional relationship among the unwinding roller, swing arm, and mobile workbench of the present utility model.

[0024] Figure 3 is a schematic diagram of the positional relationship between the mobile workbench and the casters of the present utility model.

[0025] In the figure, 1, frame; 2, mounting frame; 21, swing arm; 211, notch; 22, connecting arm; 3, unwinding roller; 31, position mark one; 32, positioning disc; 33, driven gear; 4, flipping driving member; 5, mobile workbench; 51, casters; 52, position mark two; 53, placement groove; 6, driving mechanism; 61, first pulley; 62, second pulley; 63, transmission belt; 64, motor; 65, rotating shaft; 66, driving gear; 7, ground positioning mark; 8, positioning seat; 81, positioning groove; 9, reel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions of the present utility model in combination with specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0027] A swing arm mechanism for a bag making machine, as Figures 1 to 3As shown in the figure, it includes a frame 1, on which there is an installation frame 2. The installation frame 2 includes two swing arms 21 and a connecting arm 22 connecting the two swing arms 21. The swing arms 21 are hinged on the frame 1. Each swing arm 21 is provided with a notch 211. On the installation frame 2, there is a unwinding roller 3 embedded in the notch 211. The frame 1 is provided with a flipping driving member 4 for driving the swing arms 21 to swing. The flipping driving member 4 is two cylinders, and the two cylinders respectively correspond to the two swing arms 21. The cylinders are hinged to the frame 1, and the cylinder piston rods are hinged to the swing arms 21. A positioning seat 8 is fixed on the swing arm 21. The positioning seat 8 is provided with a positioning groove 81. A positioning disc 32 is fixed on the unwinding roller 3, and the edge of the positioning disc 32 is embedded in the positioning groove 81.

[0028] A driving mechanism 6 is provided on the frame 1, and the driving mechanism 6 is used to drive the unwinding roller 3 to rotate. The driving mechanism 6 includes a rotating shaft 65 rotatably connected to the frame 1, a driving gear 66 fixed on the rotating shaft 65, a motor 64 fixed on the frame 1, a first pulley 61 fixed on the output shaft of the motor 64, a second pulley 62 fixed on the rotating shaft 65, and a transmission belt 63 installed between the first pulley 61 and the second pulley 62. A driven gear 33 is installed on the unwinding roller 3, and the driven gear 33 meshes with the driving gear 66.

[0029] The swing arm 21 mechanism for a bag making machine includes a mobile workbench 5 and a ground positioning mark 7. The bottom of the mobile workbench 5 is installed with casters 51, and the upper end surface of the mobile workbench 5 is provided with a positioning groove 81. The width of the mobile workbench 5 is smaller than the distance between the two swing arms 21. The ground positioning mark 7 is used to show the positioning position. A position mark one 31 is provided on the unwinding roller 3, and a position mark two 52 is provided on the mobile workbench 5.

[0030] Working principle: When the unwinding of the reel 9 is completed, the driving mechanism 6 is turned off. The flipping driving member 4 drives the swing arms 21 to flip downward. The staff only needs to directly remove the unwinding roller 3, assemble it with the reel 9 in the placement groove 53 of the mobile workbench 5, then push the mobile workbench 5 to move to the ground positioning mark 7. The flipping driving member 4 drives the swing arms 21 to swing upward, and the unwinding roller 3 is lifted through the notch 211. The positioning groove 81 on the positioning seat 8 restricts the position of the positioning disc 32 of the unwinding roller 3. The driven gear 33 on the unwinding roller 3 meshes with the driving gear 66 on the rotating shaft 65, and the driving mechanism 6 can drive the unwinding roller 3 to rotate to realize unwinding.

Claims

1. A swing arm mechanism for a bag making machine, characterized in that: The invention comprises a frame (1), wherein the frame (1) is provided with a mounting frame (2), wherein the mounting frame (2) comprises two swing arms (21) and a connecting arm (22) connecting the two swing arms (21), wherein the swing arms (21) are hinged on the frame (1), each of the swing arms (21) is provided with a notch (211), and the mounting frame (2) is provided with an unwinding roller (3) embedded in the notch (211), and the frame (1) is provided with a flip driving member (4) for driving the swing arms (21) to swing.

2. A swing arm (21) mechanism for a bag making machine according to claim 1, characterized in that: It also comprises a mobile workbench (5), the bottom of which is provided with casters (51), and the mobile workbench (5) is also provided with a placement groove (53).

3. A swing arm (21) mechanism for a bag making machine according to claim 2, characterized in that: The width of the movable workbench (5) is smaller than the distance between the two swing arms (21).

4. A swing arm (21) mechanism for a bag making machine according to claim 2, characterized in that: It also comprises a ground positioning mark (7), wherein the ground positioning mark (7) is used to indicate the positioning position.

5. A swing arm (21) mechanism for a bag making machine according to claim 2, characterized in that: The unwinding roller (3) is provided with a first position mark (31), and the movable workbench (5) is provided with a second position mark (52).

6. A swing arm (21) mechanism for a bag making machine according to claim 1, characterized in that: The swing arm (21) is fixed with a positioning seat (8), the positioning seat (8) is provided with a positioning groove (81), the unwinding roller (3) is fixed with a positioning disk (32), and the edge of the positioning disk (32) is embedded in the positioning groove (81).

7. A swing arm (21) mechanism for a bag making machine according to claim 1, characterized in that: The tilting driving member (4) is a cylinder, the cylinder is hinged to the frame (1), and the cylinder piston rod is hinged to the swing arm (21).

8. A swing arm (21) mechanism for a bag making machine according to claim 7, characterized in that: The number of the cylinders is two and they correspond one to one with the two swing arms (21) respectively.

9. A swing arm (21) mechanism for a bag making machine according to claim 1, characterized in that: The frame (1) is provided with a driving mechanism (6), the driving mechanism (6) comprising a rotating shaft (65) rotatably connected to the frame (1) and a driving gear (66) fixed to the rotating shaft (65); the unwinding roller (3) is provided with a driven gear (33), and the driving gear (66) is meshed with the driven gear (33).

10. A swing arm (21) mechanism for a bag making machine according to claim 9, characterized in that: The driving mechanism (6) comprises a motor (64) fixed to the frame (1), a first pulley (61) fixed to the output shaft of the motor (64), a second pulley (62) fixed to the rotating shaft (65), and a transmission belt (63) installed between the first pulley (61) and the second pulley (62).

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