Automatic plastic bag stacking device

Abstract

The invention discloses an automatic stacking device for plastic bags. The automatic stacking device comprises a rack, the unwinding and conveying mechanism is mounted on the rack and used for releasing the plastic bag roll and conveying the plastic bag to the next mechanism; the deviation rectifying mechanism is located on the rear side of the unwinding and conveying mechanism and used for adjusting the left-right position of the plastic bag; the material stacking swing mechanism is arranged at the top of the rack, located on the rear side of the deviation rectifying mechanism and used for stacking the plastic bags; the lifting mechanism is arranged below the material stacking and swinging mechanism, gradually descends according to the stacking times of the plastic bags, and ascends to a set height after a circular stacking action is completed; the pushing mechanism is arranged on one side of the lifting mechanism and used for pushing the stacked garbage bags away from the lifting mechanism; the material receiving table is located on the opposite side of the material pushing mechanism and used for receiving the stacked garbage bags; and the control mechanism is mounted on the rack and is in control connection with the unwinding conveying mechanism, the deviation rectifying mechanism, the lifting mechanism and the material pushing mechanism. The deviation correcting mechanism can correct the left and right positions of the plastic bags in the machining process in real time, the garbage bags are kept 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] The invention belongs to the technical field of plastic bag packaging, and in particular relates to an automatic plastic bag stacking device. Background Art

[0002] Generally, plastic packaging bags (plastic bags) are made of synthetic resins such as polyvinyl chloride and polyethylene by calendering. After forming cutting lines and heat-sealing parts, things can be put inside.

[0003] The food departments of large discount supermarkets and department stores that use a large number of plastic bags mainly use roll bags made of wound plastic bags. The roll bags have several welded parts for sealing and cut parts for easy shearing formed longitudinally at regular intervals and are wound in the form of a film roll.

[0004] In addition to roll bags, the way to package or extract disposable plastic bags when using them is to place several folded and stacked plastic bags in a paper box or paper bag and use them one by one. In this way, the stacking process of the stacked plastic bags is not manual but an automatic process.

[0005] Chinese patent CN102223996BCN102223996B discloses a plastic bag folding and stacking device, and more particularly relates to a plastic bag formed with a heat-sealed portion and a shearing portion, which is folded and stacked in sequence on a stacking conveyor belt; after a certain number of plastic bags are stacked on the conveyor belt, the stacked plastic bags are output from the conveyor belt for transportation through an extracting and pressurizing portion; the plastic bag folding and stacking device comprises a conveying device for conveying plastic bags through upper and lower conveying rollers, a stacking device for folding and stacking the conveyed plastic bags, a pressing device for pressing the upper part of the stacked plastic bags after being folded by the stacking device, and a fixed suction device arranged between the stacking device and the lower conveying roller and causing one side of the plastic bag to be sucked into a suction hole.

[0006] Although the existing plastic bag folding and stacking device can complete stacking of a certain thickness, the plastic bags often deviate during the stacking process, resulting in uneven stacking of the plastic bags, thereby affecting subsequent packaging. Summary of the invention

[0007] In view of the defects or shortcomings in the above-mentioned prior art, the present invention aims to provide an automatic stacking device for plastic bags.

[0008] The purpose of this application is to achieve the following technical solutions:

[0009] A plastic bag automatic stacking device comprising:

[0010] frame;

[0011] An unwinding conveying mechanism, mounted on the frame, for releasing the plastic bag roll and transferring the plastic bag to the next mechanism;

[0012] The deviation correction mechanism is located at the rear side of the unwinding conveying mechanism and is used to adjust the left and right positions of the plastic bags;

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

[0014] The lifting mechanism is located below the stacking swing mechanism and gradually descends according to the number of times the plastic bags are stacked until it rises to the set height after a cycle of stacking action is completed;

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

[0016] A receiving platform, located on the opposite side of the pushing mechanism, for receiving the stacked garbage bags;

[0017] The control mechanism is installed on the frame and is respectively controlled and connected with the unwinding conveying mechanism, the deviation correcting mechanism, the lifting mechanism and the pushing mechanism.

[0018] Preferably, the unwinding conveying mechanism comprises an unwinding motor, an unwinding shaft, an unwinding transmission belt, a swinging bracket, a swinging roller shaft and a fixed roller shaft, the unwinding motor is fixed to the side of the frame, the unwinding shaft is connected to one end of the frame through a support plate, the unwinding motor is connected to the unwinding shaft through an unwinding transmission belt, one end of the swinging bracket is hinged to the frame, a plurality of fixed roller shafts are provided and installed on the upper part of the frame, and a plurality of swinging roller shafts are provided and installed on the swinging bracket at intervals.

[0019] Preferably, the correction mechanism includes a first guide roller, a second guide roller, a connecting plate, a deflection detection sensor and a left and right offset assembly; the first guide roller and the second guide roller are respectively installed at the two ends of the connecting plate, the lower part of the connecting plate is connected to the left and right offset assemblies and the connecting plate is driven to adjust its offset through the left and right offset assemblies, the left and right offset assemblies are installed on the frame, and a deflection detection sensor is arranged above the connecting plate.

[0020] Preferably, the deflection correction mechanism also includes a first deflection correction auxiliary roller, a second deflection correction auxiliary roller and a third deflection correction auxiliary roller. The first deflection correction auxiliary roller is installed above the unwinding conveying mechanism, and the second deflection correction auxiliary roller and the third deflection correction auxiliary roller are respectively arranged on both sides of the connecting plate, and the first deflection correction auxiliary roller and the third deflection correction auxiliary roller are respectively provided with deflection detection sensors.

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

[0022] Preferably, the active feeding wheel group includes two active wheels, and the driven feeding wheel group includes two driven wheels. A plurality of wheel grooves are arranged at intervals on the active wheels, and the upper end of the feeding transmission belt is sleeved on the wheel grooves. Each active wheel corresponds to a driven wheel.

[0023] Preferably, the lifting mechanism includes a lifting motor, a screw rod, a lifting plate, a guide rod and a vertical plate, a stacking space is formed between the two vertical plates, the lifting motor is transmission-connected to the screw rod, the lifting plate is located in the stacking space and is connected to the screw rod and is driven up and down by the screw rod, and the two sides of the screw rod are guided by guide rods.

[0024] Preferably, the upper surface of the lifting plate adopts a concave-convex spaced special-shaped structure.

[0025] Preferably, the pushing mechanism comprises a pushing cylinder, a pushing plate and a guide rail, wherein 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, and the bottom of the pushing plate is 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 the present invention can correct the left and right positions of the plastic bags being processed in real time, keeping the garbage bags neatly stacked without the need for subsequent manual leveling. In addition, multiple detection positions are set in the entire process to further improve the accuracy of correction.

[0028] 2. The automatic plastic bag stacking device of the present invention processes the rolled plastic bags into stacked plastic bags through unwinding, deviation correction and folding and blanking mechanisms in sequence. No human intervention is required in the process, the degree of automation is high, and the labor cost is greatly saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural stereogram of the present invention;

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

[0031] Figure 3 A top view of the present invention;

[0032] Figure 4 It is a structural stereogram of the stacking and swinging mechanism of the present invention;

[0033] Figure 5 It is a structural stereogram of the lifting mechanism in the present invention;

[0034] Figure 6 It is a front view of the lifting mechanism in the present invention;

[0035] Figure 7 It is a structural stereogram of the material pushing mechanism in the present invention;

[0036] List of parts in this application:

[0037] 1. Frame; 2. Unwinding conveying mechanism; 3. Correction mechanism; 4. Stacking swing mechanism; 5. Lifting mechanism; 6. Material pushing mechanism; 7. Material receiving platform; 8. Control mechanism; 21. Unwinding motor; 22. Unwinding shaft; 23. Unwinding transmission belt; 24. Swinging bracket; 25. Swinging roller; 26. Fixed roller; 27. Support plate; 31. First deflection guide roller; 32. Second deflection guide roller; 33. Connecting plate; 34. Deflection detection sensor; 35. Left and right offset assembly; 36. First deflection correction auxiliary roller; 37. Second deflection correction auxiliary roller; 38 , the third deviation-correcting auxiliary roller; 41, swing bracket; 42, feeding motor; 43, active feeding wheel group; 44, driven feeding wheel group; 45, swing motor; 46, bearing; 47, swing arm; 48, transmission gear group; 49, feeding transmission belt; 51, lifting motor; 52, screw rod; 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, driving wheel; 432, wheel groove; 441, driven wheel. DETAILED DESCRIPTION

[0038] Specific embodiments of the present application are described in conjunction with the accompanying drawings and the following description to teach those skilled in the art how to make and use the best mode of the present application. In order to teach the principles of the application, the following conventional aspects have been simplified or omitted. Those skilled in the art should understand that variations from these embodiments fall within the scope of the present application. Those skilled in the art should understand that the following features can be combined in various ways to form multiple variations of the present application. Terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this application are only for the convenience of description, and are not intended to limit the scope of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the present invention without substantial changes in the technical content. Therefore, the present application is not limited to the following specific embodiments, but is only limited by 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

[0040] The frame 1 is mainly used to carry various mechanisms. The unwinding conveying mechanism 2 is installed on the frame 1. The plastic bag roll is sleeved on the unwinding conveying mechanism 2. The unwinding conveying mechanism 2 is used to release the plastic bag roll and transfer the plastic bag to the next mechanism. The unwinding conveying mechanism 2 is the starting position of the plastic bag folding process. In this embodiment, the unwinding conveying mechanism 2 is defined as the front of the device;

[0041] The deflection correction mechanism 3 is fixed on the top of the frame 1 and is located at the rear side of the unwinding conveying mechanism 2. The deflection correction mechanism 3 is the second process of the device and is mainly used to adjust the left and right positions of the plastic bags to ensure that the subsequent plastic bags are neatly stacked.

[0042] The stacking swing mechanism 4 is arranged on the top of the frame 1 and located at the rear side of the deviation correction mechanism 3, and realizes the stacking of plastic bags by swinging the equipment to discharge the materials;

[0043] The lifting mechanism 5 is arranged below the stacking swing mechanism 4, and gradually descends according to the number of times the plastic bags are stacked, and then rises to a set height after a cycle of stacking action is completed;

[0044] The pushing mechanism 6 is provided on one side of the lifting mechanism 5 and is used to push the stacked garbage bags away from the lifting mechanism 5;

[0045] The receiving platform 7 is located on the opposite side of the pushing mechanism 6 and is used to receive the stacked garbage bags.

[0046] The control mechanism 8 is installed on the frame 1. An operation table is provided on the control mechanism 8. The control mechanism 8 is respectively connected with the unwinding conveying mechanism 2, the deviation correcting mechanism 3, the stacking and swinging mechanism 4, the lifting mechanism 5 and the pushing mechanism 6 for control.

[0047] like Figure 2 and Figure 3 As shown, in the embodiment of the present application, the unwinding conveying 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 arranged on the unwinding shaft 22, one end of the swing bracket 24 is hinged on the frame 1, and the swing bracket 24 can For the up and down swing adjustment, there are three fixed rollers 26, one of which is located between the swing bracket 24 and the unwinding shaft 22, and the other two are arranged on the frame 1 above the swing bracket 24. There are three swing rollers 25, which are installed on the swing bracket 24 at intervals. After the plastic bag on the unwinding shaft 22 is unwound, it first passes over the top of the first fixed roller 26 and is supported by the fixed roller 26, and then crosses up and down and passes through the remaining two fixed rollers 26 and the three swing rollers 25 in turn, and finally goes up into the correction mechanism 3.

[0048] like Figure 3 As shown, the deflection correction mechanism 3 includes a first deflection guide roller 31, a second deflection guide roller 32, a connecting plate 33, a deflection detection sensor 34 and a left-right offset component 35; the first deflection guide roller 31 and the second deflection guide roller 32 are respectively installed at the front and rear ends of the connecting plate 33, the connecting plate 33 is connected to the left-right offset component 35 at the bottom and drives the connecting plate 33 to adjust its offset through the left-right offset component 35, the left-right offset component 35 is installed on the frame 1, and a deflection detection sensor 34 is arranged above the connecting plate 33. Through real-time monitoring of the deflection detection sensor 34 and feedback to the control mechanism 8, the control mechanism controls the operation of the left-right offset component 35 to adjust the left-right offset of the plastic bag in real time.

[0049] In addition, the deflection correction mechanism 3 also includes a first deflection correction auxiliary roller 36, a second deflection correction auxiliary roller 37 and a third deflection correction auxiliary roller 38. The first deflection correction auxiliary roller 36 is installed above the swinging roller 25, and the second deflection correction auxiliary roller 37 and the third deflection correction auxiliary roller 38 are respectively arranged on both sides of the connecting plate 33. When the garbage bag leaves the last swinging roller 25, it passes from above the first deflection correction auxiliary roller 36, and then passes from below the second deflection correction auxiliary roller 37 to reach the first deflection guide roller 31. After the first deflection guide roller 31 and the second deflection guide roller 32 are deflected, it passes from below the third deflection correction auxiliary roller 38 and leaves the deflection correction mechanism 3. The first deflection correction auxiliary roller 36 and the third deflection correction auxiliary roller 38 are respectively provided with a deflection detection sensor 34, which can further improve the neatness of the garbage bag stacking.

[0050] like Figure 4As shown, in the embodiment of the present application, the stacking swing mechanism 4 includes a swing bracket 41, a feeding motor 42, an active feeding wheel group 43, a driven feeding wheel group 44 and a swing motor 45. The two sides of the top of the swing bracket 41 are installed on the top of the frame 1 through bearings 46. The swing motor 45 is fixed on the frame 1 and its output end is connected to one end of the top of the swing bracket 41 through a swing arm 47 to drive the swing bracket 41 to swing. The feeding motor 42 is installed on the swing bracket 41. The active feeding wheel group 43 is installed on the swing bracket 41. 3 and the driven feeding wheel group 44 are respectively installed between the two vertical brackets 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, and the active feeding wheel group 43 is connected to the driven feeding wheel group 44 through the feeding transmission belt 49. Through the simultaneous operation of the swing motor 45 and the feeding motor 42, the plastic bags fall while the mechanism swings, and the plastic bags will form a stacked shape below the stacking swing mechanism 4 after the difference is compensated.

[0051] Specifically, the active feeding wheel group 43 includes two active wheels 431, the driven feeding wheel group 44 includes two driven wheels 441, and a plurality of wheel grooves 432 of plastic. The upper end of the feeding transmission belt 49 is sleeved on the wheel grooves 432, and each active wheel 431 corresponds to a driven wheel 441. In this way, a small gap can be ensured between the two active wheels 431, and the plastic bag between the two active wheels 431 is tightly pressed to drive the plastic bag to be pulled down, thereby ensuring that the folded plastic bag remains flat and wrinkle-free.

[0052] like Figure 5 and Figure 6 As shown, in the embodiment of the present application, the lifting mechanism 5 includes a lifting motor 51, a screw rod 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 screw rod 52 is respectively arranged on the two outer sides of the two vertical plates 55. A lifting motor 51 is connected to the two screw rods 52 through a gear transmission rod assembly 57. The lifting plate 53 is located in the stacking space 56 and is connected to the screw rod 52 and is driven up and down by the screw rod 52. The two sides of the screw rod 52 are guided by guide rods 54 to improve the stability of operation. The upper surface of the lifting plate 53 adopts a concave-convex spaced special-shaped structure.

[0053] 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 is a concave-convex structure, corresponding to the structure on the upper surface of the lifting plate 53. In the process of pushing the material, the convex part at the bottom of the lifting plate 53 enters into the groove of the lifting plate 53, so as not to squeeze the plastic bags on the bottom layer. The pushing cylinder 61 is connected to the pushing plate 62 to drive the pushing plate 62 to move horizontally to push the stacked plastic bags onto the receiving table 7, thereby completing the entire folding process.

[0054] Since it is easy for those skilled in the art to think of it, any modification, equivalent substitution, improvement, etc. made within the concept and principle of the application should be included in the scope of the claims of this application.

Claims

1. A plastic bag automatic stacking device, characterized in that: It includes frame; An unwinding conveying mechanism, mounted on the frame, for releasing the plastic bag roll and transferring the plastic bag to the next mechanism; The deviation correction mechanism is located at the rear side of the unwinding conveying mechanism and is used to adjust the left and right positions of the plastic bags; The stacking swing mechanism is arranged on the top of the frame and located behind the deviation correction mechanism, and is used for stacking plastic bags; The lifting mechanism is located below the stacking swing mechanism and gradually descends according to the number of times the plastic bags are stacked until it rises to the set height after a cycle of stacking action is completed; The material pushing mechanism is arranged on one side of the lifting mechanism and is used to push 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; The control mechanism is installed on the frame and is respectively controlled and connected with the unwinding conveying mechanism, the deviation correcting mechanism, the stacking and swinging 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, a swing roller shaft and a fixed roller shaft. The unwinding motor is fixed to the side of the frame, the unwinding shaft is connected to one end of the frame through a support plate, the unwinding motor is connected to the unwinding shaft through an unwinding transmission belt, one end of the swing bracket is hinged on the frame, a plurality of fixed roller shafts are provided and installed on the upper part of the frame, and a plurality of swing roller shafts are provided and installed on the swing bracket at intervals.

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 deflection detection sensor and a left and right offset assembly; the first guide roller and the second guide roller are respectively installed at the two ends of the connecting plate, the lower part of the connecting plate is connected to the left and right offset assemblies and the connecting plate is driven to adjust its offset through the left and right offset assemblies, the left and right offset assemblies are installed on the frame, and a deflection detection sensor is arranged above the connecting plate.

4. The automatic plastic bag stacking device according to claim 3, characterized in that: The deflection correction mechanism also includes a first deflection correction auxiliary roller, a second deflection correction auxiliary roller and a third deflection correction auxiliary roller. The first deflection correction auxiliary roller is installed above the unwinding conveying mechanism, and the second deflection correction auxiliary roller and the third deflection correction auxiliary roller are respectively arranged on both sides of the connecting plate. The first deflection correction auxiliary roller and the third deflection correction auxiliary roller are respectively provided with deflection detection sensors.

5. The automatic plastic bag stacking device according to claim 1, characterized in that: The stacking swing mechanism includes a swing bracket, a feeding motor, an active feeding wheel group, a driven feeding wheel group and a swing motor. The two sides of the top of the swing bracket are installed on the frame through bearings. The swing motor is fixed on the frame and its output end is connected to one end of the top of the swing bracket through a swing arm to drive the swing bracket to swing. The feeding motor is installed on the swing bracket, and the active feeding wheel group and the driven feeding wheel group are respectively installed between the two brackets of the swing bracket. The active feeding wheel group is located above the driven feeding wheel. The feeding motor is connected to the active feeding wheel group through a transmission gear group, and the active feeding wheel group is connected to the driven feeding wheel group through 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. A plurality of wheel grooves are arranged at intervals on the active wheels, and the upper end of the feeding transmission belt is sleeved on the wheel grooves. Each active wheel corresponds to a driven wheel.

7. The automatic plastic bag stacking device according to claim 1, characterized in that: The lifting mechanism includes a lifting motor, a screw rod, 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 screw rod for transmission. The lifting plate is located in the stacking space and is connected to the screw rod and is driven by the screw rod to move up and down. The two sides of the screw rod are guided by guide rods.

8. The automatic plastic bag stacking device according to claim 1, characterized in that: The upper surface of the lifting plate adopts a concave-convex spaced special-shaped structure.

9. The automatic plastic bag stacking device according to claim 1, characterized in that: The pushing mechanism comprises 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 through a slider. The pushing cylinder is connected to the pushing plate. The bottom of the pushing plate is a concave-convex structure.

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