Plastic bag folding device

Abstract

The utility model discloses a plastic bag folding device which comprises a machine frame, and a conveying belt is arranged on the inner side, close to the upper portion, of the machine frame. According to the plastic bag folding device, a plastic bag is firstly moved to the bottom of a pressing plate, then the two sides of the plastic bag are moved to the position above first material turning plates, first hydraulic rods drive the first material turning plates to move upwards through first lifting frames and connecting rods, and then the connecting rods drive the first material turning plates to be close to each other through an adjusting mechanism; when one end of the plastic bag moves to a second material turning plate, a second hydraulic rod drives the second material turning plate to move upwards through a second lifting frame, and along with continuous movement of the plastic bag, the plastic bag on the second material turning plate is turned upwards to the position above the pressing plate. According to the plastic bag folding device, plastic bags can be folded twice while being conveyed, the folded plastic bags continue to be conveyed through the conveying belt, the folding effect of the plastic bags is improved, and meanwhile the folding efficiency of the plastic bags is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic bag production, specifically to a plastic bag folding device. BACKGROUND

[0002] Plastic bags are a common household item used to hold other items. During the production of plastic bags, due to the large size of the plastic bags, it is not convenient to package them, so a plastic bag folding device is needed to fold the plastic bags.

[0003] In the patent application with the authorization publication number CN221163698U, the authorization publication date of 2022.06.03, and the name of "a plastic bag folding device", it includes a conveyor belt, a slot type pipe, and a top plate. The front end of the conveyor belt is loaded, the top surface of the middle section is parallel to the conveying direction and is provided with a pressing plate, and the pressing plate has a gap with the top surface of the conveyor belt. The rear section of the top surface of the conveyor belt is provided with a pair of inverted L-shaped structure buckling plates, the rear end of the pressing plate is located between the buckling plates, the horizontal plate of the buckling plate is located above the pressing plate, and the horizontal plate has a gap with the pressing plate. The vertical plate of the buckling plate is located on the side of the pressing plate, and the vertical plate has a gap with the pressing plate. The rear of the conveyor belt is provided with a support plate flush with the top surface thereof, two slot type pipes are arranged in the form of a square parallel to the width of the conveyor belt, and the slot type pipes are located above the gap between the conveyor belt and the support plate. The opposite side walls of the slot type pipe are provided with a clamping groove in the vertical direction. The top plate is located in the clamping groove of the two slot type pipes in the horizontal projection view, and the top plate is arranged in the vertical direction. The scheme has simple structure and high folding efficiency.

[0004] The existing plastic bag folding device, when in use, conveys the plastic bags through the conveyor belt, limits the middle part of the plastic bags through the pressing plate, and folds the two sides of the plastic bags above the pressing plate through the "┒" type structure buckling plate. However, in actual use, it is found that the "┒" type structure buckling plate cannot effectively fold the two sides of the plastic bags above the pressing plate, and the folding effect is poor. Moreover, when the plastic bags are folded again, the folded plastic bags are moved into the slot type pipe, and the plastic bags cannot be continuously conveyed, so that the plastic bags cannot be folded directly during the conveying process and continuously conveyed after folding, which is inconvenient to use. UTILITY MODEL CONTENTS

[0005] 1. The technical problem to be solved by the utility model is:

[0006] The utility model aims to provide a plastic bag folding device to solve the problems in the current market as mentioned in the background.

[0007] 2. Technical scheme:

[0008] To achieve the above object, the utility model provides following technical scheme: a plastic bag folding device, including frame, the inner side of frame near upper portion is provided with conveying belt, the top middle part of frame is installed with first U type frame, wherein,

[0009] The conveying belt is provided with a pressing plate near the upper part of the middle part, the pressing plate is fixedly connected with the first U type frame through the mounting rod, the two sides of the pressing plate in the first U type frame are symmetrically provided with the first material turning plate, the top of the first U type frame is provided with the first lifting frame, the position corresponding to the first material turning plate of the first U type frame is penetrated with the communication groove, the bottom of the first lifting frame corresponding to the communication groove is slidably provided with the connecting rod, the bottom end of the connecting rod is fixedly connected with the first material turning plate, the top of the two sides of the first U type frame is symmetrically installed with the first hydraulic rod, and the top end of the first hydraulic rod is fixedly connected with the first lifting frame.

[0010] The spacing between the connecting rods is adjusted by the adjusting mechanism, the top of the first U type frame is fixedly connected with the second U type frame, the top of the second U type frame is provided with the second lifting frame, the top of the second U type frame is symmetrically installed with the second hydraulic rod, the top end of the second hydraulic rod is fixedly connected with the second lifting frame, the middle part of the second U type frame is penetrated with the guide groove, the bottom of the second lifting frame corresponding to the guide groove is fixedly connected with the guide rod, and the bottom end of the guide rod is fixedly connected with the second material turning plate.

[0011] Preferably, the end of the pressing plate away from the second U type frame is upwardly tilted, and the end of the first material turning plate and the second material turning plate in the tilting direction of the pressing plate is an inclined surface.

[0012] Preferably, the bottom of the first lifting frame corresponding to the connecting rod is provided with a sliding groove, the sliding groove is provided with a sliding block, the bottom of the sliding block is fixedly connected with a sliding seat, and the top end of the connecting rod is fixedly connected with the sliding seat.

[0013] Preferably, the adjusting mechanism comprises a guide rod groove, the middle part of the first U type frame is penetrated with the guide rod groove, the bottom of the first lifting frame corresponding to the guide rod groove is fixedly connected with a guide rod, the middle part of the guide rod is penetrated with a rotating shaft groove, the rotating shaft groove is penetrated with a rotating shaft, the middle part of the top of the first lifting frame is installed with a motor, the shaft end of the motor is fixedly connected with the rotating shaft, the bottom end of the rotating shaft on the outer side of the guide rod is fixedly connected with a transmission wheel, the two sides of the transmission wheel are symmetrically rotatably connected with a transmission rod, and the end of the transmission rod away from the transmission wheel is rotatably connected with the connecting rod.

[0014] Preferably, the guide rod is a rectangular column, and the outer dimension of the guide rod is consistent with the inner dimension of the guide rod groove.

[0015] Preferably, the guide rod is a rectangular column, and the guide rod and the guide groove form a guide structure.

[0016] 3. Beneficial effects:

[0017] Compared with the prior art, the specific details of the plastic bag folding device of this utility model, which adopts the technical solution provided by this utility model, are as follows:

[0018] (1) The plastic bag is conveyed by the conveyor belt. When the plastic bag moves, it first moves to the bottom of the pressure plate. When the plastic bag moves into the first U-shaped frame, the two sides of the plastic bag move to the top of the first flip plate. The first hydraulic rod drives the first lifting frame to move upward. The first lifting frame drives the first flip plate to move upward through the connecting rod. Then, the adjusting mechanism drives the connecting rod to move the first flip plates closer to each other, thereby driving the two sides of the plastic bag to flip up to the top of the pressure plate. When one end of the plastic bag moves to the second flip plate, the second hydraulic rod drives the second flip plate to move upward through the second lifting frame. As the plastic bag continues to move, the plastic bag on the second flip plate flips up to the top of the pressure plate. Through this plastic bag folding device, the plastic bag can be folded twice while being conveyed. After folding, the conveyor belt continues to convey the plastic bag, which not only improves the folding effect of the plastic bag, but also improves the folding efficiency of the plastic bag.

[0019] (2) When the motor is working, it drives the rotating shaft to rotate, which in turn drives the transmission wheel to rotate. When the transmission wheel rotates, it can drive the connecting rod to move closer or further away from each other through the transmission rod, which in turn facilitates the first flipping plate to move closer or further away from each other. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the first U-shaped frame of this utility model;

[0022] Figure 3 This utility model Figure 1 A magnified view of the structure at point A in the middle;

[0023] Figure 4 This utility model Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0024] In the diagram: 1. Frame; 2. Conveyor belt; 3. First U-shaped frame; 4. Pressure plate; 5. Mounting rod; 6. First tilting plate; 7. First lifting frame; 701. Slide groove; 702. Slider; 703. Sliding seat; 8. Connecting groove; 9. Connecting rod; 10. First hydraulic rod; 11. Guide rod groove; 12. Guide rod; 13. Rotary shaft groove; 14. Rotary shaft; 15. Motor; 16. Transmission wheel; 17. Transmission rod; 18. Second U-shaped frame; 19. Second lifting frame; 20. Second hydraulic rod; 21. Guide groove; 22. Guide rod; 23. Second tilting plate. Detailed Implementation

[0025] In order to facilitate the understanding of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0027] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0028] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing", "provided with" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. Embodiment

[0029] Please refer to Figures 1 to 4 A plastic bag folding device, comprising a rack 1, the inner side of the upper part of the rack 1 is provided with a conveying belt 2, the top end of the rack 1 is provided with a first U-shaped frame 3, wherein,

[0030] The conveying belt 2 is provided with a pressing plate 4 above the middle part, the pressing plate 4 is fixedly connected with the first U-shaped frame 3 through a mounting rod 5, the first U-shaped frame 3 is provided with a first turnover plate 6 symmetrically arranged on both sides in the first U-shaped frame 3, the top of the first U-shaped frame 3 is provided with a first lifting frame 7, the first U-shaped frame 3 is provided with a communication groove 8 corresponding to the position of the first turnover plate 6, the first lifting frame 7 is provided with a connecting rod 9 slidingly arranged at the bottom corresponding to the communication groove 8, the bottom end of the connecting rod 9 is fixedly connected with the first turnover plate 6, the first U-shaped frame 3 is provided with a first hydraulic rod 10 symmetrically arranged at the top of both sides, the top end of the first hydraulic rod 10 is fixedly connected with the first lifting frame 7;

[0031] The spacing between the connecting rods 9 is adjusted by the adjusting mechanism, the rack 1 is fixedly connected with a second U-shaped frame 18 near the top of the first U-shaped frame 3, the top of the second U-shaped frame 18 is provided with a second lifting frame 19, the second U-shaped frame 18 is provided with a second hydraulic rod 20 symmetrically arranged at the top, the top end of the second hydraulic rod 20 is fixedly connected with the second lifting frame 19, the second U-shaped frame 18 is provided with a guide groove 21 penetrating the middle part, the bottom of the second lifting frame 19 is fixedly connected with a guide rod 22 corresponding to the guide groove 21, the bottom end of the guide rod 22 is fixedly connected with a second turnover plate 23;

[0032] The plastic bag is conveyed by the conveying belt 2, when the plastic bag moves, the plastic bag first moves to the bottom of the pressing plate 4, when the plastic bag moves into the first U-shaped frame 3, the two sides of the plastic bag move above the first turnover plate 6, the first hydraulic rod 10 drives the first lifting frame 7 to move upwards, the first lifting frame 7 drives the first turnover plate 6 to move upwards through the connecting rod 9, then the adjusting mechanism drives the connecting rod 9 to move the first turnover plate 6 to each other, and then drives the two sides of the plastic bag to turn over above the pressing plate 4, when one end of the plastic bag moves onto the second turnover plate 23, the second hydraulic rod 20 drives the second turnover plate 23 to move upwards through the second lifting frame 19, as the plastic bag continues to move, the plastic bag on the second turnover plate 23 turns over above the pressing plate 4, through the plastic bag folding device, the plastic bag can be conveyed and folded twice at the same time, the conveying belt 2 continues to convey after folding, which not only improves the folding effect of the plastic bag, but also improves the folding efficiency of the plastic bag.

[0033] Please refer to Figures 1 to 4, the end of the first turnover plate 6 and the second turnover plate 23 away from the second U-shaped frame 18 is inclined, the first lifting frame 7 is provided with a sliding groove 701 corresponding to the bottom of the connecting rod 9, the sliding groove 701 is provided with a sliding block 702, the bottom of the sliding block 702 is fixedly connected with a sliding seat 703, the top end of the connecting rod 9 is fixedly connected with the sliding seat 703, when the plastic bag is conveyed by the conveying belt 2, the plastic bag is moved to the lower side of the pressing plate 4 through the end of the pressing plate 4, and when the connecting rod 9 is moved by the adjusting mechanism, the connecting rod 9 drives the sliding block 702 to move in the sliding groove 701, the movement of the connecting rod 9 is limited, and deviation of the movement of the connecting rod 9 is avoided.

[0034] Please refer to Figures 1 to 4 , the adjusting mechanism comprises a guide rod slot 11, the first U-shaped frame 3 is provided with the guide rod slot 11 penetrating through the middle part, the first lifting frame 7 is fixedly connected with a guide rod 12 corresponding to the bottom of the guide rod slot 11, the guide rod 12 is provided with a rotating shaft slot 13 penetrating through the middle part, the rotating shaft slot 13 is provided with a rotating shaft 14 penetrating through, the top end of the first lifting frame 7 is provided with a motor 15, the shaft end of the motor 15 is fixedly connected with the rotating shaft 14, the bottom end of the rotating shaft 14 located outside the guide rod 12 is fixedly connected with a transmission wheel 16, the transmission wheel 16 is symmetrically and rotatably connected with a transmission rod 17 on both sides, the transmission rod 17 is rotatably connected with the connecting rod 9 away from the transmission wheel 16, the motor 15 drives the rotating shaft 14 to rotate when working, and then drives the transmission wheel 16 to rotate, when the transmission wheel 16 rotates, the connecting rod 9 can be driven to move close to or away from each other through the transmission rod 17, and then the first turnover plate 6 can be conveniently driven to move close to or away from each other.

[0035] Please refer to Figures 1 to 4 , the guide rod 12 is a rectangular column, and the outer dimension of the guide rod 12 is consistent with the inner dimension of the guide rod slot 11, the guide rod 22 is a rectangular column, and the guide rod 22 and the guide slot 21 form a guide structure.

[0036] Working principle: when the plastic bag folding device is used, like Figures 1 to 4As shown, first, the plastic bag is conveyed by the conveying belt 2, and when the plastic bag moves, the plastic bag moves to the bottom of the pressing plate 4, and when the plastic bag moves into the first U-shaped frame 3, the two sides of the plastic bag move above the first turnover plate 6, the first hydraulic rod 10 drives the first lifting frame 7 to move upwards, the first lifting frame 7 drives the first turnover plate 6 to move upwards through the connecting rod 9, then the connecting rod 9 drives the first turnover plate 6 to move close to each other through the adjusting mechanism, and then the two sides of the plastic bag are turned up above the pressing plate 4, when one end of the plastic bag moves onto the second turnover plate 23, the second hydraulic rod 20 drives the second turnover plate 23 to move upwards through the second lifting frame 19, and as the plastic bag continues to move, the plastic bag on the second turnover plate 23 is turned up above the pressing plate 4, and through the plastic bag folding device, the plastic bag can be folded twice while being conveyed by the conveying belt 2, and the conveying belt 2 continues to convey after folding, which not only improves the folding effect of the plastic bag, but also improves the folding efficiency of the plastic bag;

[0037] When the plastic bag is conveyed by the conveying belt 2, the plastic bag is moved below the pressing plate 4 through the end-up pressing plate 4, and when the connecting rod 9 moves through the adjusting mechanism, the connecting rod 9 drives the sliding block 702 to move in the sliding groove 701, and the movement of the connecting rod 9 is limited, so that the movement of the connecting rod 9 does not deviate, and when the motor 15 works, the rotating shaft 14 rotates, and then the transmission wheel 16 rotates, and when the transmission wheel 16 rotates, the connecting rod 9 can be driven to move close to or away from each other through the transmission rod 17, and then the first turnover plate 6 can be driven to move close to or away from each other.

[0038] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0039] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A plastic bag folding apparatus, characterized by, Including frame (1), the frame (1) is provided with a conveying belt (2) near the upper inner side, the top middle part of the frame (1) is provided with a first U-shaped frame (3), wherein, The conveying belt (2) is provided with a pressing plate (4) near the upper middle part, the pressing plate (4) is fixedly connected with the first U-shaped frame (3) through a mounting rod (5), the pressing plate (4) is provided with a first material turning plate (6) on both sides in the first U-shaped frame (3), the top of the first U-shaped frame (3) is provided with a first lifting frame (7), the first U-shaped frame (3) is provided with a communication groove (8) corresponding to the position of the first material turning plate (6), the first lifting frame (7) is provided with a connecting rod (9) slidingly at the bottom corresponding to the communication groove (8), the bottom end of the connecting rod (9) is fixedly connected with the first material turning plate (6), the first U-shaped frame (3) is provided with a first hydraulic rod (10) symmetrically at the top, and the top end of the first hydraulic rod (10) is fixedly connected with the first lifting frame (7); The spacing between the connecting rods (9) is adjusted by an adjusting mechanism, the frame (1) is fixedly connected with a second U-shaped frame (18) near the top of the first U-shaped frame (3), the top of the second U-shaped frame (18) is provided with a second lifting frame (19), the second U-shaped frame (18) is provided with a second hydraulic rod (20) symmetrically at the top, the top end of the second hydraulic rod (20) is fixedly connected with the second lifting frame (19), the second U-shaped frame (18) is provided with a guide groove (21) penetrating through the middle part, the bottom of the second lifting frame (19) is fixedly connected with a guide rod (22) corresponding to the guide groove (21), and the bottom end of the guide rod (22) is fixedly connected with a second material turning plate (23).

2. A plastic bag folding apparatus as defined in claim 1, wherein: The end of the first material turning plate (6) and the second material turning plate (23) away from the second U-shaped frame (18) is inclined.

3. A plastic bag folding apparatus as defined in claim 1, wherein: The first lifting frame (7) comprises a sliding groove (701), a sliding block (702) and a sliding seat (703), the first lifting frame (7) is provided with a sliding groove (701) at the bottom corresponding to the connecting rod (9), the sliding groove (701) is provided with a sliding block (702), the bottom of the sliding block (702) is fixedly connected with a sliding seat (703), and the top end of the connecting rod (9) is fixedly connected with the sliding seat (703).

4. A plastic bag folding apparatus as defined in claim 1, wherein: The adjusting mechanism comprises a guide rod slot (11), the middle part of the first U-shaped frame (3) is penetrated by the guide rod slot (11), the bottom of the first lifting frame (7) is fixedly connected with a guide rod (12) corresponding to the guide rod slot (11), the middle part of the guide rod (12) is penetrated by a rotating shaft slot (13), the rotating shaft slot (13) is penetrated by a rotating shaft (14), the top end of the first lifting frame (7) is provided with a motor (15), the shaft end of the motor (15) is fixedly connected with the rotating shaft (14), the bottom end of the rotating shaft (14) located outside the guide rod (12) is fixedly connected with a transmission wheel (16), the transmission wheel (16) is symmetrically and rotatably connected with a transmission rod (17) on both sides, and the end of the transmission rod (17) away from the transmission wheel (16) is rotatably connected with the connecting rod (9).

5. A plastic bag folding apparatus as defined in claim 4, wherein: The guide rod (12) is a rectangular column, and the external dimension of the guide rod (12) is consistent with the internal dimension of the guide rod slot (11).

6. A plastic bag folding apparatus as defined in claim 1, wherein: The guide rod (22) is a rectangular column, and the guide rod (22) and the guide slot (21) form a guide structure.

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