Unfolding mechanism for stacked packaging films

Abstract

An unfolding mechanism for stacked packaging films comprises a fixed frame, a movable frame and film clamping parts, the movable frame is provided with a transverse rod, the two ends of the transverse rod are each provided with a set of film clamping part, each film clamping part comprises a film clamping head, a film inserting plate and a film inserting plate driving mechanism, each film inserting plate is of a plate-shaped structure, and the film inserting plates are arranged on the transverse rod. The film inserting plates of each group of film clamping parts comprise a first inserting plate and a second inserting plate, and the unfolded outer ends of the first inserting plate and the second inserting plate are respectively provided with a film clamping head; according to the unfolding mechanism for the stacked packaging film, the structure that the umbrella-shaped supporting structure is matched with the flat-plate-shaped inserting plate is adopted, the inserting plate can be inserted into the center seam position of an M-shaped prefabricated bag in the folded state, and the grabbed bag body is unfolded under the unfolding action of the umbrella-shaped supporting structure; according to the equipment, a physical clamping structure is adopted for clamping a bag body, and the equipment can resist blowing of large transverse wind power and does not dislocate.

Description

Technical Field

[0001] The utility model belongs to packaging film auxiliary equipment for stacking or large machinery in the field of packaging machinery, and specifically relates to an unfolding mechanism of packaging film for stacking. Background Art

[0002] Most of the existing packaging methods for large-volume or mechanical stacks use prefabricated packaging film bags for wrapping, and a few use winding manipulators for wrapping the packaging tape; the advantages of prefabricated packaging bags are obvious, that is, good sealing and fast wrapping, and the packaging process is short; and the current prefabricated packaging bag packaging machinery and equipment generally have four manipulators at the four corners of the receiving position. After the negative pressure absorption port is used at the end of each manipulator to suck one corner of the bag mouth tightly, the four manipulators are opened under the drive of the unfolding mechanism to pull the packaging bag to the packageable size, and then the four manipulators move to the top of the stack to be packaged, and the bag mouth position of the opened bag body is transferred to the bagging mechanism, or the manipulator is used to directly wrap the stack. However, since most of the packaging sites are factory spaces, they are generally relatively open or have a large wind flow speed for cooling. The method of using negative pressure to absorb the bag film body often causes dislocation or even falling off, resulting in frequent machine alarms and poor grasping efficiency. The manufacturing cost of the equipment using manipulators for displacement is high, and the probability of failure is also high. Summary of the invention

[0003] In view of the defects in the prior art, the purpose of the utility model is to provide an unfolding mechanism for packaging film for stacking which can overcome the above defects.

[0004] The technical solution adopted by the utility model to solve the technical problem is: an unfolding mechanism of a packaging film for stacking, the key is that the unfolding mechanism of the packaging film comprises a fixed frame, a mobile frame, and a film clamping part, the mobile frame has a cross bar, and a group of film clamping parts are respectively arranged at both ends of the cross bar, the film clamping part comprises a film clamping head, a film inserting plate and a film inserting plate driving mechanism, the film inserting plate is a plate-shaped structure, and the film inserting plate of each group of film clamping parts comprises a first plugging plate and a second plugging plate, and a film clamping head is respectively arranged at the unfolding outer end of the first plugging plate and the second plugging plate; the first plugging plate and the second plugging plate respectively connect one end facing each other to the mobile frame rotatably, and the other end is connected to the unfolding cylinder, and the first plugging plate and the second plugging plate are symmetrically arranged; the film inserting plate driving mechanism comprises an unfolding cylinder, a second slide rail, a second slider, and a connecting rod, the connecting rod is provided with two, and the two connecting rods are rotatably fixed at the middle position of the first plugging plate and the second plugging plate respectively through a connecting block, the unfolding cylinder is connected to the second slider, the second slider is connected to the ends of the two connecting rods, and the second slider is matched and connected to the second slide rail to slide up and down according to the second slide rail.

[0005] The expansion cylinder is connected to a cylinder connecting plate, the cylinder connecting plate is connected to the second sliding block, and the cylinder connecting plate is in an L-shaped cross-section.

[0006] The cylinder connecting plate is connected to the cylinder shell of the unfolding cylinder. The cylinder has an output shaft. The cylinder output shaft is fixedly connected to the end position of the second slide rail.

[0007] The first plug board and the second plug board both include a plug board bar and a plug board body. The plug board bar is in a rectangular cross-sectional shape, and the plug board body is in a flat plate shape with a trapezoidal portion.

[0008] The connecting position of the connecting rod and the first plug plate or the second plug plate is connected through a connecting rod seat, the bottom of the connecting rod seat is fixedly connected to the first plug plate or the second plug plate, and the upper end of the connecting rod is rotatably connected to the connecting rod seat.

[0009] The movable frame is provided with a limit indicator, and the fixed frame is correspondingly provided with an upper limiter and a lower limiter. The limit indicator moves on the line between the upper limiter and the lower limiter as the movable frame moves.

[0010] A long strip plate body is arranged at the lower end of the plugging plate body, a small cylinder arranged horizontally is arranged on the long strip plate body, and a claw pad is arranged on the output rod of the small cylinder.

[0011] The position of the long strip plate corresponding to the claw pad is provided with raised lines for the claw pad to fit and press tightly.

[0012] The first plug board and the second plug board are both provided with a plurality of hollow holes.

[0013] The unfolding mechanism of the packaging film for stacking of the utility model adopts an umbrella-shaped support structure with a flat-plate plug-in structure, which can be inserted into the middle seam of the M-shaped prefabricated bag when the plug-in plate is folded, and the grasped bag body can be unfolded under the unfolding action of the umbrella-shaped support structure. The device grasps the bag body with a physical clamping structure to clamp it, which can resist strong lateral wind force and will not be dislocated. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the unfolded structure of the utility model in the folded state.

[0015] Figure 2 It is a side view of the utility model in the unfolded position and folded state.

[0016] Figure 3 It is a schematic diagram of the unfolded structure of the utility model in the unfolded state.

[0017] Figure 4 It is a side view of the unfolded structure of the utility model in the unfolded state.

[0018] Figure 5 It is a schematic diagram of the expanded part of the utility model. DETAILED DESCRIPTION

[0019] like Figures 1 to 5As shown, a packaging film unfolding mechanism for stacking, the packaging film unfolding mechanism includes a fixed frame 1, a movable frame 2, and a film clamping part 3, the movable frame 2 has a cross bar 21, and a film clamping part 3 is respectively provided at both ends of the cross bar, the film clamping part 3 includes a film clamping head 31, a film inserting plate 32 and a film inserting plate driving mechanism, the film inserting plate is a plate-shaped structure, and each group of film inserting plates 32 of the film clamping part includes a first inserting plate 321 and a second inserting plate 322, and the outer ends of the first inserting plate 321 and the second inserting plate 322 are respectively provided with a film clamping head 31; the first inserting plate 321 and the second inserting plate 322 respectively have one end facing each other rotatably connected to the movable frame 2, and the other end is connected to the film inserting plate driving mechanism Structure, the first plug plate 321 and the second plug plate 322 are symmetrically arranged; the fixed frame 1 is provided with a transmission shaft 11 and a receiving and moving component 12, the receiving and moving component 12 includes a driving sprocket 121 arranged at both ends of the transmission shaft 11 and a passive sprocket 122 and a slider 123 arranged at an external fixed position, a chain 124 is passed between the driving sprocket and the passive sprocket, a first slide rail 13 is also provided on the fixed frame 1, a slider 123 is provided on the first slide rail, the slider is fixedly connected to the end of the cross bar 21 of the moving frame 2, the slider 123 is fixedly connected to the chain 124, the combination of the driving sprocket, the passive sprocket, the chain, the first slide rail 13, and the slider 123 is provided with two groups and are respectively arranged at both ends of the cross bar of the moving frame, the transmission shaft 11 is also provided with a transmission wheel 111, and the transmission wheel 111 is connected to the driving gear 113 of the driving motor 112. The fixed frame 1 is fixed on the frame, and the chain 124 is sleeved on the gears of the driving sprocket 121 and the driven sprocket 122. The transmission shaft 11 is transversely arranged on the fixed frame 1. The receiving moving assembly 12 includes a driving sprocket 121 and accessories respectively arranged at both ends of the transmission shaft 11. The first plug plate 321 and the second plug plate 322 are used to align the middle seam of the M-shaped prefabricated packaging bag 4. Specifically, the first plug plate 321 and the second plug plate 322 are combined and aligned with the middle position of the bag body, and inserted into the middle seam of the bag body during the upward movement of the moving frame, and then the film clamping head of the film clamping part is closed, and the film clamping head is closed and pressed with the position corresponding to the plug plate body, thereby clamping the bag mouth; the film inserting plate driving mechanism includes an expansion cylinder 33, a second slide rail 22, a second slider 23, and a connecting rod 34. The connecting rod 34 is provided with two, and the two connecting rods 34 are rotatably fixed at the middle position of the first plug plate 321 and the second plug plate 322 through a connecting block respectively. The expansion cylinder 33 is connected to the second slider 23, and the second slider 23 is connected to the ends of the two connecting rods. The second slider 23 is cooperatively connected to the second slide rail 22 and slides up and down according to the second slide rail.The unfolding cylinder 33 includes an extension shaft and a rod body. The cylinder body is connected to the second slider 23, and the second slider 23 is restricted by the second slide rail 22 and moves up and down in the slide rail to achieve directional relative displacement between the cylinder body and the extending shaft. The cylinder body is also connected to two connecting rods 34, and the ends of the connecting rods 34 can be rotatably fixed on the first plug plate 321 and the second plug plate 322 respectively. The above structure can realize an umbrella-like opening structure, that is, the unfolding cylinder 33 is an umbrella handle and a hand rest, the connecting rod 34 is an umbrella support rod, and the first plug plate 321 and the second plug plate 322 are respectively a pair of symmetrical umbrella ribs.

[0020] The expansion cylinder is connected to a cylinder connecting plate 125, and the cylinder connecting plate 125 is connected to the second sliding block. The cylinder connecting plate has an L-shaped cross-section.

[0021] The cylinder connecting plate 125 is connected to the cylinder shell of the expansion cylinder. The cylinder has an output shaft. The cylinder output shaft is fixedly connected to the end position of the second slide rail. The cylinder shell can be moved up and down by the extension and retraction of the output shaft.

[0022] The first plugboard 321 and the second plugboard 322 both include a plugboard bar 3201 and a plugboard body 3202. The plugboard bar 3201 is rectangular in cross-section, and the plugboard body 3202 is a flat plate with a trapezoidal portion. The trapezoidal portion is located on the inner side of the plugboard body 3202 close to the bag body, and the shorter upper bottom portion of the trapezoid is located on the outer side, so as to facilitate insertion into the middle seam of the M-shaped bag body. The first plugboard 321 and the second plugboard 322 are symmetrically arranged, and the two groups of first plugboards 321 and second plugboards 322, a total of four plugboards, are arranged in a rectangular shape.

[0023] The connecting position between the connecting rod and the first plug plate 321 or the second plug plate 322 is connected through a connecting rod seat. The bottom of the connecting rod seat is fixedly connected to the first plug plate 321 or the second plug plate 322, and the upper end of the connecting rod is rotatably connected to the connecting rod seat.

[0024] The movable frame is provided with a limit indicator 153, and the fixed frame is correspondingly provided with an upper limiter 151 and a lower limiter 152. The limit indicator moves on the line between the upper limiter and the lower limiter as the movable frame moves.

[0025] The lower end of the plug plate body 3202 is provided with a long strip plate body, on which a small cylinder is arranged horizontally, and the output rod of the small cylinder is provided with a claw pad. The claw pad cooperates with the small cylinder to press the film to be clamped.

[0026] The position of the long strip plate corresponding to the claw pad is provided with a raised pattern for the claw pad to fit and press tightly. The claw pad and the raised pattern are matched with each other.

[0027] A plurality of hollow holes are provided on the first plug board 321 and the second plug board 322. The hollow holes can not only reduce the weight of the board, but also reduce the wind resistance when the board moves, thereby improving the accuracy of movement and positioning.

[0028] The above disclosures are only several specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A packaging film unfolding mechanism for stacking, characterized in that The unfolding mechanism of the packaging film comprises a fixed frame, a movable frame, and a film clamping part, the movable frame has a cross bar, and two ends of the cross bar are respectively provided with a group of film clamping parts, the film clamping part comprises a film clamping head, a film inserting plate and a film inserting plate driving mechanism, the film inserting plate is a plate-shaped structure, and the film inserting plates of each group of film clamping parts comprise a first plugging plate and a second plugging plate, and the unfolded outer ends of the first plugging plate and the second plugging plate are respectively provided with a film clamping head; the first plugging plate and the second plugging plate respectively connect one end facing each other to the movable frame rotatably, and the other end is connected to the film inserting plate driving mechanism, and the first plugging plate and the second plugging plate are symmetrically arranged; the film inserting plate driving mechanism comprises an unfolding cylinder, a second slide rail, a second slider, and a connecting rod, and the connecting rod is provided with two, and the two connecting rods are rotatably fixed at the middle position of the first plugging plate and the second plugging plate respectively through a connecting block, the unfolding cylinder is connected to the second slider, the second slider is connected to the ends of the two connecting rods, and the second slider is cooperatively connected to the second slide rail to slide up and down according to the second slide rail.

2. The unwinding mechanism for stacking packaging film according to claim 1, characterized in that The expansion cylinder is connected to a cylinder connecting plate, the cylinder connecting plate is connected to the second sliding block, and the cylinder connecting plate is in an L-shaped cross-section.

3. The unwinding mechanism for stacking packaging film according to claim 2, characterized in that The cylinder connecting plate is connected to the cylinder shell of the unfolding cylinder. The cylinder has an output shaft. The cylinder output shaft is fixedly connected to the end position of the second slide rail.

4. The unwinding mechanism for stacking packaging film according to claim 3, characterized in that The first plug board and the second plug board both include a plug board bar and a plug board body. The plug board bar is in a rectangular cross-sectional shape, and the plug board body is in a flat plate shape with a trapezoidal portion.

5. The unwinding mechanism for stacking packaging film according to claim 4, characterized in that The connecting position of the connecting rod and the first plug plate or the second plug plate is connected through a connecting rod seat, the bottom of the connecting rod seat is fixedly connected to the first plug plate or the second plug plate, and the upper end of the connecting rod is rotatably connected to the connecting rod seat.

6. The unwinding mechanism for stacking packaging film according to claim 5, characterized in that The movable frame is provided with a limit indicator, and the fixed frame is correspondingly provided with an upper limiter and a lower limiter. The limit indicator moves on the line between the upper limiter and the lower limiter as the movable frame moves.

7. The unwinding mechanism for stacking packaging film according to claim 6, characterized in that A long strip plate body is arranged at the lower end of the plugging plate body, a small cylinder arranged horizontally is arranged on the long strip plate body, and a claw pad is arranged on the output rod of the small cylinder.

8. The unwinding mechanism for stacking packaging film according to claim 7, characterized in that The position of the long strip plate corresponding to the claw pad is provided with raised lines for the claw pad to fit and press tightly.

9. The unwinding mechanism for stacking packaging film according to claim 8, characterized in that The first plug board and the second plug board are both provided with a plurality of hollow holes.

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