Automatic plastic bag stacking device

Abstract

The utility model discloses an automatic plastic bag stacking device which comprises a machine frame, an unwinding conveying mechanism, a deviation rectifying mechanism, a material stacking swinging mechanism, a lifting mechanism, a material pushing mechanism, a material receiving table and a control mechanism, the unwinding conveying mechanism is installed on the machine frame, and the deviation rectifying mechanism is located on the rear side of the unwinding conveying mechanism. The material stacking and swinging mechanism is arranged at the top of the rack and located on the rear side of the deviation rectifying mechanism, the lifting mechanism is arranged below the material stacking and swinging mechanism, the material pushing mechanism is arranged on one side of the lifting mechanism, the material receiving table is located on the opposite side of the material pushing mechanism, and the control mechanism is installed on the rack. The deviation correcting mechanism can correct the left and right positions of the plastic bags in the machining process in real time, the plastic bags are kept to be stacked in order, follow-up manual leveling is not needed, a plurality of detection positions are arranged in the whole process, and the deviation correcting precision is further improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of plastic bag packaging, and specifically relates to an automatic plastic bag stacking device. Background Technology

[0002] Typically, plastic packaging bags (plastic bags) are made of synthetic resins such as polyvinyl chloride and polyethylene through calendering. After forming the cut lines and heat-sealing parts, they can be used to hold things.

[0003] Large discount supermarkets and department stores that use a lot of plastic bags mainly use roll bags, which are sealed with welded sections and cut sections that are easy to cut, arranged longitudinally at certain intervals and wound like a roll of film.

[0004] In addition to roller bags, other methods of packaging or retrieving single-use plastic bags involve placing several folded plastic bags inside a cardboard box or paper bag, and then using them one by one. This folding process is automated, not manual.

[0005] Chinese patent CN102223996BC discloses a plastic bag folding and stacking device, particularly relating to a plastic bag forming a heat-sealing part and a shearing part being folded and stacked sequentially on a stacking conveyor belt; after a certain number of plastic bags are stacked on the conveyor belt, the stacked plastic bags are transported by an output conveyor belt through an extraction and pressurizing part; the plastic bag folding and stacking device includes a conveying device that conveys plastic bags through an upper conveyor roller and a lower conveyor roller, a stacking device that folds and stacks the conveyed plastic bags, a pressing device that presses the upper part of the stacked plastic bags after folding by the stacking device, and a fixed suction device disposed between the stacking device and the lower conveyor roller and sucking one side of the plastic bag into the suction hole.

[0006] While existing plastic bag folding and stacking devices can achieve a certain thickness of stacking, plastic bags often shift during the stacking process, resulting in uneven stacked plastic bags that affect subsequent packaging. Utility Model Content

[0007] In view of the defects or deficiencies in the existing technology, the present invention aims to provide an automatic stacking device for plastic bags.

[0008] The purpose of this application is achieved through the following technical solution:

[0009] An automatic plastic bag stacking device, comprising:

[0010] frame;

[0011] An unwinding conveyor mechanism, mounted on the frame, is used to release the roll of plastic bags and transfer the plastic bags to the next mechanism;

[0012] The correction mechanism, located behind the unwinding conveyor mechanism, is used to adjust the left and right position of the plastic bag.

[0013] The stacking swing mechanism is located at the top of the frame and behind the correction mechanism, and is used for stacking plastic bags;

[0014] The lifting mechanism is located below the stacking swing mechanism. It gradually descends according to the number of times the plastic bags are stacked, until it rises to the set height after one stacking cycle is completed.

[0015] The material pushing mechanism, located on one side of the lifting mechanism, is used to push the stacked garbage bags away from the lifting mechanism;

[0016] The receiving platform, located on the opposite side of the pushing mechanism, is used to receive stacked garbage bags;

[0017] The control mechanism is mounted on the frame and is connected to the unwinding conveyor mechanism, the correction mechanism, the lifting mechanism, and the pushing mechanism.

[0018] Preferably, the unwinding conveying mechanism includes an unwinding motor, an unwinding shaft, an unwinding transmission belt, a swing bracket, swing rollers, and fixed rollers. The unwinding motor is fixed to the side of the frame, the unwinding shaft is connected to one end of the frame via a support plate, the unwinding motor is connected to the unwinding shaft via the unwinding transmission belt, one end of the swing bracket is hinged to the frame, several fixed rollers are provided and installed on the upper part of the frame, and several swing rollers are provided and installed at intervals on the swing bracket.

[0019] Preferably, the correction mechanism includes a first guide roller, a second guide roller, a connecting plate, a deviation detection sensor, and a left-right offset assembly. The first guide roller and the second guide roller are respectively installed at both ends of the connecting plate. The lower part of the connecting plate is connected to the left-right offset assembly, and the left-right offset assembly drives the connecting plate to shift and adjust. The left-right offset assembly is installed on the frame, and the deviation detection sensor is set above the connecting plate.

[0020] Preferably, the correction mechanism further includes a first correction auxiliary roller, a second correction auxiliary roller, and a third correction auxiliary roller. The first correction auxiliary roller is installed above the unwinding conveyor mechanism, and the second and third correction auxiliary rollers are respectively located on both sides of the connecting plate. The first and third correction auxiliary rollers are respectively equipped with deviation detection sensors.

[0021] Preferably, the stacking and swaying mechanism includes a swaying bracket, a feeding motor, an active feeding wheel assembly, a driven feeding wheel assembly, and the swaying motor. The top two sides of the swaying bracket are mounted on the frame via bearings. The swaying motor is fixed on the frame, and its output end is connected to one end of the top of the swaying bracket via a swing arm to drive the swaying bracket to sway. The feeding motor is mounted on the swaying bracket. The active feeding wheel assembly and the driven feeding wheel assembly are respectively mounted between the two supports of the swaying bracket. The active feeding wheel assembly is located above the driven feeding wheel. The feeding motor is connected to the active feeding wheel assembly via a transmission gear set. The active feeding wheel assembly is connected to the driven feeding wheel assembly via a feeding transmission belt.

[0022] Preferably, the active feeding wheel set includes two active wheels, and the driven feeding wheel set includes two driven wheels. Several grooves are spaced apart on the active wheels, and the upper end of the feeding transmission belt is fitted onto the grooves. Each active wheel corresponds to one driven wheel.

[0023] Preferably, the lifting mechanism includes a lifting motor, a lead screw, a lifting plate, a guide rod, and a vertical plate. A stacking space is formed between the two vertical plates. The lifting motor is connected to the lead screw via a transmission. The lifting plate is located in the stacking space and connected to the lead screw, and is driven to move up and down by the lead screw. The lead screw is guided on both sides by guide rods.

[0024] Preferably, the upper surface of the lifting plate adopts an irregularly shaped structure with alternating concave and convex shapes.

[0025] Preferably, the pushing mechanism includes a pushing cylinder, a pushing plate, and a guide rail. The pushing plate is located on one side of the lifting mechanism. The pushing plate is slidably connected to the guide rail via a slider. The pushing cylinder is connected to the pushing plate. The bottom of the pushing plate has a concave-convex structure.

[0026] Compared with the prior art, this application has at least the following obvious advantages and effects:

[0027] 1. The correction mechanism in this utility model can correct the left and right positions of plastic bags in real time during processing, keeping the garbage bags neatly stacked without the need for subsequent manual leveling. Moreover, multiple detection positions are set throughout the process to further improve the accuracy of correction.

[0028] 2. The automatic plastic bag stacking device of this utility model processes roll-shaped plastic bags into stacked plastic bags through unwinding, correction and folding mechanisms in sequence. No manual intervention is required in the process, the degree of automation is high, and labor costs are greatly saved. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural view of the present invention;

[0030] Figure 2 This is the front view of the present invention;

[0031] Figure 3 This is a top view of the present invention;

[0032] Figure 4 This is a three-dimensional structural view of the stacking and swinging mechanism in this utility model;

[0033] Figure 5 This is a three-dimensional structural view of the lifting mechanism in this utility model;

[0034] Figure 6 This is a front view of the lifting mechanism in this utility model;

[0035] Figure 7 This is a three-dimensional structural view of the material pushing mechanism in this utility model;

[0036] List of components in this application:

[0037] 1. Frame; 2. Unwinding conveyor mechanism; 3. Deviation correction mechanism; 4. Stacking and swinging mechanism; 5. Lifting mechanism; 6. Pushing mechanism; 7. Receiving platform; 8. Control mechanism; 21. Unwinding motor; 22. Unwinding shaft; 23. Unwinding transmission belt; 24. Swinging bracket; 25. Swinging roller shaft; 26. Fixed roller shaft; 27. Support plate; 31. First guide roller shaft; 32. Second guide roller shaft; 33. Connecting plate; 34. Deviation detection sensor; 35. Left and right offset assembly; 36. First deviation correction auxiliary roller shaft; 37. Second deviation correction auxiliary roller shaft; 38. 41. Third correction auxiliary roller; 42. Swing bracket; 43. Feeding motor; 44. Active feeding wheel assembly; 45. Driven feeding wheel assembly; 46. Swing motor; 47. Bearing; 48. Swing arm; 49. Transmission gear set; 50. Feeding transmission belt; 51. Lifting motor; 52. Lead screw; 53. Lifting plate; 54. Guide rod; 55. Vertical plate; 56. Stacking space; 57. Gear transmission rod assembly; 61. Pushing cylinder; 62. Pushing plate; 63. Guide rail; 64. Slider; 431. Drive wheel; 432. Wheel groove; 441. Driven wheel. Detailed Implementation

[0038] Specific embodiments of this application have been described in conjunction with the accompanying drawings and the following description to teach those skilled in the art how to make and use this application. For the purpose of teaching the principles of the application, the following conventional aspects have been simplified or omitted. Those skilled in the art should understand that variations derived from these embodiments fall within the scope of this application. Those skilled in the art should understand that the following features can be combined in various ways to form multiple variations of this application. Terms such as “upper,” “lower,” “left,” “right,” “middle,” and “one” used in this application are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model. Therefore, this application is not limited to the specific embodiments described below, but only to the claims and their equivalents.

[0039] like Figure 1 As shown, this embodiment relates to an automatic plastic bag stacking device, characterized in that it includes a frame 1, mainly used to support various mechanisms; an unwinding conveyor 2, installed on the frame 1, on which a plastic bag roll is placed; the unwinding conveyor 2 is used to release the plastic bag roll and transfer the plastic bag to the next mechanism; the unwinding conveyor 2 serves as the starting position for folding the plastic bag, and in this embodiment, it is defined as the front of the device; a correction mechanism 3, fixed to the top of the frame 1 and located behind the unwinding conveyor 2; the correction mechanism 3 serves as the second process of this device, mainly used to adjust the left and right positions of the plastic bags to ensure that subsequent plastic bags are stacked neatly; and a stacking swing machine. Mechanism 4, located at the top of frame 1 and behind the correction mechanism 3, stacks plastic bags by swinging the equipment to unload them; Lifting mechanism 5, located below the stacking swing mechanism 4, gradually descends according to the number of times the plastic bags are stacked, and rises to the set height after one stacking cycle is completed; Pushing mechanism 6, located on one side of lifting mechanism 5, is used to push the stacked garbage bags away from lifting mechanism 5; Receiving platform 7, located on the opposite side of pushing mechanism 6, is used to receive the stacked garbage bags; Control mechanism 8, installed on frame 1, has an operating table on it, and is connected to unwinding conveyor mechanism 2, correction mechanism 3, stacking swing mechanism 4, lifting mechanism 5 and pushing mechanism 6 respectively.

[0040] like Figure 2 and Figure 3As shown in the embodiment of this application, the unwinding conveyor mechanism 2 includes an unwinding motor 21, an unwinding shaft 22, an unwinding transmission belt 23, a swing bracket 24, a swing roller shaft 25, and a fixed roller shaft 26. The unwinding motor 21 is fixed to the side of the frame 1. The unwinding shaft 22 is connected to one end of the frame 1 through a support plate 27. The unwinding motor 21 is connected to the unwinding shaft 22 through the unwinding transmission belt 23. The plastic bag roll is sleeved on the unwinding shaft 22. One end of the swing bracket 24 is hinged to the frame 1. The swing bracket 24 can... The fixed roller shaft 26 is provided for the up-and-down swing adjustment. One of the fixed roller shafts 26 is located between the swing bracket 24 and the unwinding shaft 22, and the other two are located on the frame 1 above the swing bracket 24. There are three swing roller shafts 25, which are installed at intervals on the swing bracket 24. After the plastic bag on the unwinding shaft 22 is unwound, it first passes over the first fixed roller shaft 26 and is supported by the fixed roller shaft 26. Then it passes through the remaining two fixed roller shafts 26 and the three swing roller shafts 25 in a crisscross pattern, and finally enters the correction mechanism 3.

[0041] like Figure 3 As shown, the correction mechanism 3 includes a first guide roller 31, a second guide roller 32, a connecting plate 33, a deviation detection sensor 34, and a left-right offset assembly 35. The first guide roller 31 and the second guide roller 32 are respectively installed at the front and rear ends of the connecting plate 33. The lower part of the connecting plate 33 is connected to the left-right offset assembly 35, and the left-right offset assembly 35 drives the connecting plate 33 to shift and adjust. The left-right offset assembly 35 is installed on the frame 1. The deviation detection sensor 34 is set above the connecting plate 33. The deviation detection sensor 34 monitors and feeds back to the control mechanism 8 in real time. The control mechanism controls the operation of the left-right offset assembly 35 to adjust the left-right offset of the plastic bag in real time.

[0042] In addition, the correction mechanism 3 also includes a first correction auxiliary roller 36, a second correction auxiliary roller 37, and a third correction auxiliary roller 38. The first correction auxiliary roller 36 is installed above the swing roller 25. The second correction auxiliary roller 37 and the third correction auxiliary roller 38 are respectively located on both sides of the connecting plate 33. After the garbage bag leaves the last swing roller 25, it passes over the first correction auxiliary roller 36, then under the second correction auxiliary roller 37, and reaches the first guide roller 31. After correction by the first guide roller 31 and the second guide roller 32, it passes under the third correction auxiliary roller 38 and leaves the correction mechanism 3. The first correction auxiliary roller 36 and the third correction auxiliary roller 38 are respectively equipped with a deviation detection sensor 34, which can further improve the neatness of the garbage bag stacking.

[0043] like Figure 4As shown in the embodiment of this application, the stacking swaying mechanism 4 includes a swaying bracket 41, a feeding motor 42, an active feeding wheel set 43, a driven feeding wheel set 44, and a swaying motor 45. The top two sides of the swaying bracket 41 are mounted on the top of the frame 1 via bearings 46. The swaying motor 45 is fixed to the frame 1, and its output end is connected to one end of the top of the swaying bracket 41 via a swing arm 47, driving the swaying bracket 41 to sway. The feeding motor 42 is mounted on the swaying bracket 41, and the active feeding wheel set 44... 3 and driven feeding wheel group 44 are respectively installed between the two vertical supports of the swing bracket 41. The active feeding wheel group 43 is located above the driven feeding wheel 44. The feeding motor 42 is connected to the active feeding wheel group 43 through the transmission gear group 48. The active feeding wheel group 43 is connected to the driven feeding wheel group 44 through the feeding transmission belt 49. With the simultaneous operation of the swing motor 45 and the feeding motor 42, the plastic bag falls while the mechanism swings. After the differential compensation, the plastic bag will form a stacked shape below the stacking swing mechanism 4.

[0044] Specifically, the active feeding wheel set 43 includes two active wheels 431, the driven feeding wheel set 44 includes two driven wheels 441, multiple plastic wheel grooves 432, and the upper end of the feeding transmission belt 49 is fitted onto the wheel grooves 432. Each active wheel 431 corresponds to one driven wheel 441, which ensures that there is a small gap between the two active wheels 431, tightly pressing the plastic bag between the two active wheels 431, driving the plastic bag to pull down, and ensuring that the folded plastic bag remains flat and wrinkle-free.

[0045] like Figure 5 and Figure 6 As shown in the embodiment of this application, the lifting mechanism 5 includes a lifting motor 51, a lead screw 52, ​​a lifting plate 53, a guide rod 54, and a vertical plate 55. A stacking space 56 is formed between the two vertical plates 55. A lead screw 52 is respectively provided on the two outer sides of the two vertical plates 55. A lifting motor 51 is connected to the two lead screws 52 through a gear transmission rod assembly 57. The lifting plate 53 is located in the stacking space 56 and is connected to the lead screw 52 and is driven to move up and down by the lead screw 52. The lead screw 52 is guided by the guide rod 54 on both sides to improve the stability of operation. The upper surface of the lifting plate 53 adopts an irregular structure with concave and convex intervals.

[0046] like Figure 7As shown, the pushing mechanism 6 includes a pushing cylinder 61, a pushing plate 62, and a guide rail 63. The pushing plate 62 is located on the side of the stacking space 56. The pushing plate 62 is slidably connected to the guide rail 63 through a slider 64. The bottom of the pushing plate 62 has a concave-convex structure, which corresponds to the structure of the upper surface of the lifting plate 53. During the pushing process, the protrusion at the bottom of the lifting plate 53 enters the groove of the lifting plate 53, so as not to squeeze the plastic bags at the bottom. The pushing cylinder 61 is connected to the pushing plate 62 and drives the pushing plate 62 to move horizontally to push the stacked plastic bags onto the receiving platform 7, thus completing the entire folding process.

[0047] As those skilled in the art will readily conceive, any modifications, equivalent substitutions, improvements, etc., made using the concept and principles of this application should be included within the scope of the claims of this application.

Claims

1. An automatic stacking device for plastic bags, characterized in that, It includes: a frame; an unwinding conveyor mechanism, mounted on the frame, for releasing plastic bag rolls and transferring plastic bags to the next mechanism; a correction mechanism, located behind the unwinding conveyor mechanism, for adjusting the left and right positions of the plastic bags; a stacking swaying mechanism, located at the top of the frame and behind the correction mechanism, for stacking plastic bags; a lifting mechanism, located below the stacking swaying mechanism, which gradually descends according to the number of times the plastic bags are stacked, until it rises to a set height after one stacking cycle is completed; a pushing mechanism, located on one side of the lifting mechanism, for pushing the stacked garbage bags away from the lifting mechanism; a receiving platform, located on the opposite side of the pushing mechanism, for receiving the stacked garbage bags; and a control mechanism, mounted on the frame, which is connected to the unwinding conveyor mechanism, the correction mechanism, the stacking swaying mechanism, the lifting mechanism, and the pushing mechanism.

2. The automatic plastic bag stacking device according to claim 1, characterized in that, The unwinding conveying mechanism includes an unwinding motor, an unwinding shaft, an unwinding transmission belt, a swing bracket, swing rollers, and fixed rollers. The unwinding motor is fixed to the side of the frame. The unwinding shaft is connected to one end of the frame via a support plate. The unwinding motor is connected to the unwinding shaft via the unwinding transmission belt. One end of the swing bracket is hinged to the frame. Several fixed rollers are provided and installed on the upper part of the frame. Several swing rollers are provided and installed at intervals on the swing bracket.

3. The automatic plastic bag stacking device according to claim 1, characterized in that, The correction mechanism includes a first guide roller, a second guide roller, a connecting plate, a deviation detection sensor, and a left-right offset assembly. The first guide roller and the second guide roller are respectively installed at both ends of the connecting plate. The lower part of the connecting plate is connected to the left-right offset assembly, and the left-right offset assembly drives the connecting plate to shift and adjust. The left-right offset assembly is installed on the frame, and the deviation detection sensor is set above the connecting plate.

4. The automatic plastic bag stacking device according to claim 3, characterized in that, The correction mechanism further includes a first correction auxiliary roller, a second correction auxiliary roller, and a third correction auxiliary roller. The first correction auxiliary roller is installed above the unwinding conveyor mechanism, and the second and third correction auxiliary rollers are respectively located on both sides of the connecting plate. The first and third correction auxiliary rollers are respectively equipped with deviation detection sensors.

5. The automatic plastic bag stacking device according to claim 1, characterized in that, The stacking and swaying mechanism includes a swaying bracket, a feeding motor, an active feeding wheel assembly, a driven feeding wheel assembly, and the swaying motor. The top two sides of the swaying bracket are mounted on the frame via bearings. The swaying motor is fixed on the frame, and its output end is connected to one end of the top of the swaying bracket via a swing arm to drive the swaying bracket to sway. The feeding motor is mounted on the swaying bracket. The active feeding wheel assembly and the driven feeding wheel assembly are respectively mounted between the two supports of the swaying bracket. The active feeding wheel assembly is located above the driven feeding wheel. The feeding motor is connected to the active feeding wheel assembly via a transmission gear set. The active feeding wheel assembly is connected to the driven feeding wheel assembly via a feeding transmission belt.

6. The automatic plastic bag stacking device according to claim 5, characterized in that, The active feeding wheel set includes two active wheels, and the driven feeding wheel set includes two driven wheels. Several grooves are spaced apart on the active wheels, and the upper end of the feeding transmission belt is fitted onto the grooves. Each active wheel corresponds to one driven wheel.

7. The automatic plastic bag stacking device according to claim 1, characterized in that, The lifting mechanism includes a lifting motor, a lead screw, a lifting plate, a guide rod, and a vertical plate. A stacking space is formed between the two vertical plates. The lifting motor is connected to the lead screw via a transmission. The lifting plate is located in the stacking space and connected to the lead screw, and is driven to move up and down by the lead screw. The lead screw is guided on both sides by guide rods.

8. The automatic plastic bag stacking device according to claim 7, characterized in that, The upper surface of the lifting plate adopts an irregularly shaped structure with alternating concave and convex shapes.

9. The automatic plastic bag stacking device according to claim 1, characterized in that, The pushing mechanism includes a pushing cylinder, a pushing plate, and a guide rail. The pushing plate is located on one side of the lifting mechanism. The pushing plate is slidably connected to the guide rail via a slider. The pushing cylinder is connected to the pushing plate. The bottom of the pushing plate has a concave-convex structure.

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