A film roll changer for food packaging

Abstract

The utility model belongs to packaging bag processing equipment technical field, concretely relates to a film roll change frame for food packaging processing, including push trolley frame, turnover mechanism, clamping mechanism and elevating system. Push trolley frame contains pedestal, vertical frame and crosspiece, provides movement and support, and turnover mechanism realizes film roll turnover through cooperation of each part, and clamping mechanism is composed of baffle, clamping plate and clamping cylinder, can clamp film roll, and elevating system drives turnover mechanism and clamping mechanism to go up and down through elevating cylinder. Through push trolley frame moving device, elevating system drops and makes clamping mechanism align with film roll center through -hole, and after clamping, promotes, and turnover mechanism turns over film roll to be consistent with equipment pivot direction, and finally moves to target machine and completes installation. The utility model provides a kind of high -efficient replacement device that is integrated with film roll automatic clamping, lifting, direction conversion, improves the efficiency of roll replacement, reduces labour intensity and safety risk.

Description

Technical Field

[0001] This utility model belongs to the technical field of packaging bag processing equipment, specifically relating to a film roll replacement rack for food packaging processing. Background Technology

[0002] In today's food packaging and processing industry, food packaging bags are mostly made of multi-layer composite materials. Film rolls are the main carriers of packaging materials. Each roll is heavy, manual handling is time-consuming and labor-intensive, and it is difficult to accurately align the rotating shaft when loading the machine. The efficiency of film roll replacement directly affects the continuity and production efficiency of the production line.

[0003] Traditional film roll replacement requires operators to manually move the film roll from the ground to the equipment installation location. During installation, the central through-hole of the vertically placed film roll must be converted to a horizontal position to match the equipment's rotating shaft. Due to the significant weight of the film roll and the need for precise alignment of the central through-hole with the shaft, manual handling is time-consuming and labor-intensive. Publication CN212825718U discloses an internal expansion clamping device for a film roll cutting machine, which uses a cylinder to control the expansion and contraction of an internal expansion locking rod to clamp the film roll. However, it fails to achieve the lifting of the film roll and the reversal of the central through-hole direction. Currently, the market lacks a highly efficient replacement device that integrates automatic clamping, lifting, and reversal of film rolls, making it difficult to meet the automated, efficient, and hygienic production requirements of food packaging processing. Utility Model Content

[0004] The present invention aims to provide a film roll changing rack for food packaging processing, so as to solve the problem of low roll changing efficiency caused by the lack of automated clamping and direction conversion functions in traditional devices.

[0005] To achieve the above objectives, the present invention provides a film roll replacement rack for food packaging processing, comprising: The trolley frame includes a base with wheels, a vertical frame and a horizontal frame. The horizontal frame includes a main horizontal frame and two auxiliary horizontal frames. The vertical frame is fixed to the base. The top of the vertical frame is fixedly connected to the main horizontal frame, and the two sides of the middle part of the vertical frame are fixedly connected to the two auxiliary horizontal frames. The flipping mechanism includes a vertical main plate, a horizontal main plate, a slide cylinder, a V-shaped flipping main plate, and a flipping cylinder. The top of the vertical main plate is fixedly connected to the horizontal main plate, and the vertical main plate is slidably connected in the slide cylinder. The end of the secondary crossbar away from the vertical frame is fixedly connected to the side of the slide cylinder. The bottom of the vertical main plate is hinged to the top of the intersection of the vertical main plate and the V-shaped flipping main plate. The base of the flipping cylinder is hinged to one end of the horizontal main plate, and the working end of the flipping cylinder is hinged to the end of the V-shaped flipping main plate near the vertical frame. The clamping mechanism includes a baffle, two clamping plates and a clamping cylinder. The baffle is fixedly connected to the end of the V-shaped flip main board away from the vertical frame. The clamping cylinder is statically connected to the baffle. The extension and retraction path of the cylinder passes through the diameter of the baffle. The two clamping plates are respectively connected to the two ends of the cylinder. The lifting mechanism includes a lifting cylinder, one end of which is connected to the main crossbeam and the other end of which is connected to the horizontal main plate.

[0006] The working principle and beneficial effects of this solution are as follows: The device is moved to the side of the film roll on the ground by the rolling wheels of the trolley frame. The lifting cylinder of the lifting mechanism is in a retracted state, causing the V-shaped flipping main plate of the flipping mechanism to drive the clamping mechanism, keeping the clamping mechanism vertical, and the two clamping plates of the clamping mechanism are in a retracted state. The lifting cylinder extends downward, driving the horizontal main plate and the entire flipping mechanism to descend, so that the clamping mechanism at the bottom of the V-shaped flipping main plate is aligned with the vertically upward center through hole of the film roll. Then, the clamping cylinder drives the two clamping plates to open, thereby clamping the inner wall of the roll. Then, the lifting cylinder is controlled to retract, pulling the entire flipping mechanism upward, lifting the film roll from the ground. When the film roll is lifted to a suitable height, the flipping cylinder is activated, pushing the V-shaped flipping main plate to rotate around the hinge point at the bottom of the vertical main plate, so that the originally vertical center through hole of the film roll is flipped to a horizontal state with the V-shaped main plate, aligning it with the direction of the equipment's rotation axis. Finally, the trolley frame is moved to the target machine, and the clamping mechanism is released by reversing the operation, completing the roll installation.

[0007] (1) Through the coordinated operation of the lifting mechanism, clamping mechanism and flipping mechanism, the integrated operation of ground picking, vertical clamping, horizontal conversion and precise installation is realized. The fully automated operation replaces manual handling and manual alignment, which significantly improves the efficiency of roll changing, reduces labor intensity and safety risks, and at the same time reduces the direct contact between workers and film rolls, meeting the production requirements of hygienic food packaging processing. (2) The clamping plates adjust the distance between the clamping plates through the clamping cylinder, which can adapt to film rolls with different inner diameters without prior adjustment; the flipping cylinder directly drives the V-shaped main board to flip, which is more compact and faster in response than traditional motor or mechanical transmission.

[0008] Optionally, the included angle between the two arms of the V-shaped flipping main board is 120° to 150°, and the ends of the two arms are rounded. The V-shaped structure at a specific angle ensures the support strength for the roll material and provides sufficient rotation space for the flipping process; the rounded corners can prevent scratching the surface of the film roll material during flipping and protect the integrity of the packaging material.

[0009] Optionally, the outer surface of the clamping plate is rounded. Rounding the outer surface of the clamping plate will better fit the circular central through-hole of the film roll.

[0010] Optionally, the clamping mechanism is further provided with a U-shaped fixing plate, which includes two side plates and a back plate. The two ends of the clamping cylinder are respectively fixed to the two side plates. The working end of the clamping cylinder extends to the outside of the side plates of the U-shaped fixing plate. The back plate of the U-shaped fixing plate is fixed to the baffle. The two clamping plates are respectively fixedly connected to the working end of the clamping cylinder and the side plate on which the clamping cylinder base is fixed.

[0011] Optionally, the hinge point between the tilting cylinder and the horizontal main plate or the V-shaped tilting main plate is connected by a detachable pin, and elastic retaining rings are provided at both ends of the pin. The detachable pin connection facilitates the maintenance and replacement of the tilting mechanism, and the elastic retaining rings prevent the pin from loosening and falling off, ensuring the reliability of the tilting action and the service life of the mechanism.

[0012] Optionally, the working end of the tilting cylinder is provided with a fisheye connector, and the end of the V-shaped tilting main board near the vertical frame is provided with a horizontal shaft, and the fisheye connector is rotatably connected to the horizontal shaft.

[0013] Optionally, a sliding bearing is provided on the inner wall of the slide cylinder, and the vertical main plate is coaxial with the slide cylinder. The sliding bearing reduces the frictional resistance between the vertical main plate and the slide cylinder, making the lifting mechanism operate more smoothly and reducing mechanical wear.

[0014] Optionally, triangular reinforcing ribs are provided at the connections between the vertical and horizontal frames, and at the connections between the vertical frame and the base. These reinforcing ribs are welded and fixed to the vertical and horizontal frames, and also to the base. The triangular reinforcing ribs enhance the connection strength between the vertical frame, horizontal frame, and base. Especially when the lifting mechanism is loaded with film rolls, this effectively reduces member deformation and extends the equipment's service life. Attached Figure Description

[0015] Figure 1 This is a side view of a film roll replacement rack for food packaging processing according to an embodiment of the present utility model; Figure 2 This is a front view of a film roll replacement rack for food packaging processing according to an embodiment of the present utility model; Figure 3 This invention relates to a flipping mechanism for a film roll changing rack for food packaging processing, as described in this embodiment. Figure 4 This invention relates to a clamping mechanism for a film roll replacement rack for food packaging processing, as described in this embodiment. Detailed Implementation

[0016] The following detailed description illustrates the specific implementation method: The markings in the accompanying drawings include: base 1, vertical frame 11, main horizontal frame 12, secondary horizontal frame 121, reinforcing rib plate 13, vertical main plate 2, horizontal main plate 21, slide cylinder 22, V-shaped flipping main plate 23, confluence top 231, flipping cylinder 24, pin shaft 25, fisheye connector 26, horizontal shaft 27, clamping mechanism 3, baffle 31, clamping plate 32, clamping cylinder 33, U-shaped fixing plate 34, side plate 341, back plate 342, lifting cylinder 4.

[0017] Example This embodiment is basically as follows: Figures 1-4 As shown: A film roll replacement rack for food packaging processing includes a trolley frame, a flipping mechanism, a clamping mechanism 3, and a lifting mechanism.

[0018] like Figure 1 , Figure 2 As shown, the trolley frame includes a base 1 with rolling wheels, a vertical frame 11, and a horizontal frame. The horizontal frame includes a main horizontal frame 12 and two auxiliary horizontal frames 121. The base 1 is made of steel bars welded into a U-shape, with four swivel wheels with brake pads symmetrically installed at the bottom. The brake pads are controlled by a foot switch, facilitating flexible steering during movement and quick locking during positioning. The vertical frame 11 is vertically welded to the base 1. The main horizontal frame 12 is welded to the top of the vertical frame 11, and the auxiliary horizontal frames 121 are symmetrically welded to both sides of the middle of the vertical frame 11. The end of the auxiliary horizontal frame 121 away from the vertical frame 11 is welded and fixed to the side of the slide cylinder 22, forming the support structure of the tilting mechanism. Triangular reinforcing ribs 13 are welded at the connection points between the vertical frame 11 and the base 1, the connection points between the vertical frame 11 and the main horizontal frame 12, and the connection points between the vertical frame 11 and the auxiliary horizontal frames 121 to enhance the overall load-bearing strength.

[0019] like Figure 3 As shown, the flipping mechanism includes a vertical main plate 2, a horizontal main plate 21, a slide cylinder 22, a V-shaped flipping main plate 23, and a flipping cylinder 24. The slide cylinder 22 is a hollow cylindrical structure with sliding bearings installed on its inner wall. The vertical main plate 2 passes through the slide cylinder 22 and cooperates with the sliding bearings, allowing it to slide vertically. The top of the vertical main plate 2 is welded to the horizontal main plate 21, and the bottom of the vertical main plate 2 is hinged to the top 231 of the V-shaped flipping main plate 23 via a pin, forming a rotatable connection point. The included angle between the two arms of the V-shaped flipping main plate 23 is 135°, and the ends are rounded to prevent scratching the surface of the roll material during flipping. A horizontal shaft 27 is provided at one end of the V-shaped flipping main plate 23 near the vertical frame 11 for connecting the fisheye connector 26 at the working end of the flipping cylinder 24. The base of the tilting cylinder 24 is hinged to one end of the horizontal main plate 21 via a pin 25. Elastic retaining rings are provided at both ends of the pin 25 to prevent the pin 25 from loosening and falling off. The working end of the tilting cylinder 24 is equipped with a fisheye connector 26, which is rotatably connected to the horizontal axis 27 of the V-shaped tilting main plate 23. The tilting cylinder 24 drives the V-shaped tilting main plate 23 to rotate around the hinge point at the bottom of the vertical main plate 2 through extension and retraction.

[0020] like Figure 4 As shown, the clamping mechanism 3 includes a baffle 31, two clamping plates 32, a clamping cylinder 33, and a U-shaped fixing plate 34. The U-shaped fixing plate 34 is formed by two side plates 341 and a back plate 342 fixedly connected together, with the back plate 342 fixed to the baffle 31 by bolts. The cylinder body of the clamping cylinder 33 is fixed between the two side plates 341, and the working end of the clamping cylinder extends beyond the side plate 341 of the U-shaped fixing plate 34. The extension and retraction path of the clamping cylinder 33 passes through the diameter of the baffle 31. There are two clamping plates 32, which are fixedly connected to the working end of the clamping cylinder 33 and the side plate 341 of the base of the clamping cylinder 33, respectively. The distance between the two clamping plates 32 is adjusted by the extension and retraction of the cylinder, adapting to film rolls with different inner diameters.

[0021] like Figure 1 , Figure 2 As shown, the lifting mechanism includes a lifting cylinder 4. The base of the lifting cylinder 4 is fixed on the main crossbeam 12. The working end of the lifting cylinder 4 is fixedly connected to the horizontal main plate 21. The vertical main plate 2 is driven to slide up and down along the slide cylinder 22 by the extension and retraction of the lifting cylinder 4, thereby driving the entire flipping mechanism and clamping mechanism 3 to lift up and down.

[0022] The specific implementation process is as follows: Depress the universal wheel brake to unlock, push the trolley frame to the side of the film roll on the ground, and depress the brake again to lock the position. The tilting cylinder 24 retracts, causing the V-shaped tilting main plate 23 to rotate around the bottom hinge point of the vertical main plate 2, aligning the clamping mechanism 3 with the vertical center through hole of the film roll. The lifting cylinder 4 extends, and then the horizontal main plate 21 drives the tilting mechanism to descend until the two clamping plates 32 of the clamping mechanism 3 extend into the vertical center through hole of the film roll. The clamping cylinder 33 pushes the clamping plates 32 outward, causing the two clamping plates 32 to expand inward to clamp the inner wall of the center through hole of the film roll. The lifting cylinder 4 retracts, pulling the horizontal main plate 21 upward, lifting the film roll from the ground to a suitable height. The tilting cylinder 24 extends, pushing the V-shaped tilting main plate 23 to rotate 90° around the bottom hinge point of the vertical main plate 2, changing the center through hole of the film roll from a vertical state to a horizontal state, making the center through hole of the film roll coaxial with the rotating shaft of the packaging machinery. Push the trolley frame closer to the target equipment. After manual alignment, the clamping cylinder 33 reverses its action to release the clamping plate 32, and the film roll automatically falls into the equipment shaft, completing the installation.

[0023] The above are merely embodiments of this utility model. This utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solution are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are able to access all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims. The specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A film roll replacement rack for food packaging processing, characterized in that: include: The trolley frame includes a base with wheels, a vertical frame and a horizontal frame. The horizontal frame includes a main horizontal frame and two auxiliary horizontal frames. The vertical frame is fixed to the base. The top of the vertical frame is fixedly connected to the main horizontal frame, and the two sides of the middle part of the vertical frame are fixedly connected to the two auxiliary horizontal frames. The flipping mechanism includes a vertical main plate, a horizontal main plate, a slide cylinder, a V-shaped flipping main plate, and a flipping cylinder. The top of the vertical main plate is fixedly connected to the horizontal main plate, and the vertical main plate is slidably connected in the slide cylinder. The end of the secondary crossbar away from the vertical frame is fixedly connected to the side of the slide cylinder. The bottom of the vertical main plate is hinged to the top of the intersection of the vertical main plate and the V-shaped flipping main plate. The base of the flipping cylinder is hinged to one end of the horizontal main plate, and the working end of the flipping cylinder is hinged to the end of the V-shaped flipping main plate near the vertical frame. The clamping mechanism includes a baffle, two clamping plates and a clamping cylinder. The baffle is fixedly connected to the end of the V-shaped flip main board away from the vertical frame. The clamping cylinder is statically connected to the baffle. The extension and retraction path of the cylinder passes through the diameter of the baffle. The two clamping plates are respectively connected to the two ends of the cylinder. The lifting mechanism includes a lifting cylinder, one end of which is connected to the main crossbeam and the other end of which is connected to the horizontal main plate.

2. The film roll replacement rack for food packaging processing according to claim 1, characterized in that: The included angle between the two arms of the V-shaped flip motherboard is 120° to 150°, and the ends of the two arms are rounded.

3. The film roll replacement rack for food packaging processing according to claim 1, characterized in that: The outer surface of the clamp is set as an arc.

4. The film roll replacement rack for food packaging processing according to claim 1, characterized in that: The clamping mechanism is also provided with a U-shaped fixing plate, which includes two side plates and a back plate. The two ends of the clamping cylinder are fixed to the two side plates respectively. The working end of the clamping cylinder extends to the outside of the side plates of the U-shaped fixing plate. The back plate of the U-shaped fixing plate is fixed to the baffle. The two clamping plates are respectively fixedly connected to the working end of the clamping cylinder and the side plate on which the clamping cylinder base is fixed.

5. The film roll replacement rack for food packaging processing according to claim 1, characterized in that: The hinge point between the tilting cylinder and the horizontal main plate or the V-shaped tilting main plate is connected by a detachable pin, and elastic retaining rings are provided at both ends of the pin.

6. The film roll replacement rack for food packaging processing according to claim 1, characterized in that: The working end of the tilting cylinder is equipped with a fisheye connector, and the end of the V-shaped tilting main board near the vertical frame is equipped with a horizontal shaft. The fisheye connector is rotatably connected to the horizontal shaft.

7. The film roll replacement rack for food packaging processing according to claim 1, characterized in that: The inner wall of the slide is provided with a sliding bearing, and the vertical main plate is coaxial with the slide.

8. The film roll replacement rack for food packaging processing according to claim 1, characterized in that: Triangular reinforcing ribs are provided at the connection between the vertical frame and the horizontal frame, and at the connection between the vertical frame and the base. The reinforcing ribs are welded and fixed to the vertical frame and the horizontal frame, respectively, and the reinforcing ribs are welded and fixed to the vertical frame and the base, respectively.

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