Plastic bag tail folding device

Abstract

The utility model relates to the technical field of plastic bag manufacturing, in particular to a plastic bag tail folding device which comprises a machine frame. A manipulator which reciprocates and is used for clamping a plastic bag is arranged on the rack; a folding bottom plate used for placing a plastic bag to be folded is arranged under the motion path of the manipulator; the side, close to the conveying direction of the plastic bags, of the folding bottom plate is further provided with a pressing plate mechanism used for abutting against the plastic bags to be folded. The manipulator comprises a clamping bottom plate and a pressing sheet which is arranged on the clamping bottom plate and is used for pressing the plastic bag on the clamping bottom plate; and a clamping bottom plate of the manipulator and the pressing sheet are arranged towards the input direction of the plastic bag.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bag manufacturing, in particular to a folding device for the tail of a plastic bag. Background Art

[0002] In the last link of plastic bag manufacturing, it is necessary to stack and fold plastic bags. Regarding the folding problem of plastic bags, it is common to additionally set up a folding and pushing mechanism or a folding mechanism for each link to fold the plastic bags in half, which has a high cost. At the same time, it is necessary to additionally set up production line components, resulting in low production efficiency. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is, in view of the above-mentioned existing technical deficiencies, to provide a folding device for the tail of a plastic bag. By using a pressing plate mechanism in cooperation with a manipulator, it realizes that the manipulator only used for transporting plastic bags, after transporting the plastic bags to the folding bottom plate, while releasing the clamping of the plastic bags, presses the pressing plate mechanism against the plastic bags, and further through the backward movement of the manipulator, folds the plastic bags staying on the clamping bottom plate of the manipulator backward, improving the use efficiency of the manipulator, reducing the manufacturing cost, and also improving the production efficiency.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is: including a frame; a reciprocating manipulator for clamping plastic bags is arranged on the frame; a folding bottom plate for placing plastic bags to be folded is arranged under the movement path of the manipulator; a pressing plate mechanism for pressing the plastic bags to be folded is further arranged on one side of the folding bottom plate close to the plastic bag conveying direction; the manipulator includes a clamping bottom plate and a pressing piece arranged on the clamping bottom plate for pressing the plastic bags on the clamping bottom plate; the clamping bottom plate and the pressing piece of the manipulator are arranged towards the input direction of the plastic bags.

[0005] Further optimizing the technical solution, when the manipulator crosses the folding bottom plate and transports the plastic bags to the folding bottom plate, the plastic bags on the folding bottom plate are pressed by the pressing plate mechanism, the pressing piece of the manipulator releases the tail of the plastic bags, and moves backward, folding the tail of the plastic bags on the clamping bottom plate of the manipulator above the pressing plate.

[0006] Further optimizing the technical solution, there is no device for folding or turning over plastic bags on the side of the folding bottom plate away from the pressing plate mechanism.

[0007] Further optimizing the technical solution, a driving mechanism for driving the manipulator to reciprocate is arranged on the frame.

[0008] Further optimizing the technical solution, the driving mechanism includes a motor and a belt driven by the motor to rotate; the manipulator is also slidably connected to the frame through a slide rail; the manipulator is connected to the belt.

[0009] Further optimize this technical solution. A driving cylinder for driving the pressing plate to press down is arranged on the manipulator; one side of the pressing plate is rotatably arranged on the manipulator; the telescopic end of the driving cylinder is connected to the pressing plate through a spherical plain bearing.

[0010] Further optimize this technical solution. The pressing plate mechanism includes a base plate arranged on the frame through a transverse cylinder; and a pressing plate connected and arranged on the base plate through a longitudinal cylinder.

[0011] Further optimize this technical solution. A positioning cylinder with a telescopic end facing downwards is arranged on the upper side at the corresponding position of the folding bottom plate; a pressing block is arranged at the telescopic end of the positioning cylinder.

[0012] Further optimize this technical solution. A notch corresponding to the pressing block is arranged on the pressing plate.

[0013] Compared with the prior art, the utility model has the following advantages: 1. Through the cooperation of the manipulator and the pressing plate mechanism on the folding bottom plate, the tail folding is realized, and this structure effectively improves the operation utilization rate of the manipulator; 2. At the same time, the tail folding link is simplified, which effectively ensures that the whole folding link is simplified and the material cost is reduced. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of a plastic bag tail folding device.

[0015] Figure 2 It is a schematic diagram of the structure of the manipulator of a plastic bag tail folding device.

[0016] Figure 3 It is a schematic diagram of the state during folding of a plastic bag tail folding device.

[0017] In the figure: 1. Frame; 2. Manipulator; 3. Folding bottom plate; 4. Pressing plate mechanism; 5. Clamping bottom plate; 6. Pressing plate; 7. Driving mechanism; 8. Driving cylinder; 9. Base plate; 10. Transverse cylinder; 11. Longitudinal cylinder; 12. Positioning cylinder; 13. Pressing block. Detailed Embodiments

[0018] To make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the detailed embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the utility model.

[0019] Detailed embodiments: In combination with Figures 1-3As shown in the figure, it includes a frame 1; a manipulator 2 that reciprocates and is used to clamp a plastic bag is arranged on the frame 1; a folding bottom plate 3 for placing the plastic bag to be folded is arranged under the movement path of the manipulator 2; a pressing plate mechanism 4 for pressing the plastic bag to be folded is further arranged on one side of the folding bottom plate 3 close to the plastic bag conveying direction; the manipulator 2 includes a clamping bottom plate 5 and a pressing piece 6 arranged on the clamping bottom plate 5 to press the plastic bag onto the clamping bottom plate 5; the clamping bottom plate 5 and the pressing piece 6 of the manipulator 2 are arranged facing the input direction of the plastic bag; after the folding bottom plate 3 is arranged under the movement path of the manipulator 2, the working process of the manipulator 2 crossing over the folding bottom plate 3 can be realized.

[0020] When the manipulator 2 crosses over the folding bottom plate 3 and conveys the plastic bag onto the folding bottom plate 3, the plastic bag on the folding bottom plate 3 is pressed and combined by the pressing plate mechanism 4. The pressing piece 6 of the manipulator 2 releases the tail of the plastic bag and moves back, folding the tail of the plastic bag on the clamping bottom plate 5 of the manipulator 2 above the pressing plate; there is no device for folding or turning over the plastic bag on the side of the folding bottom plate 3 away from the pressing plate mechanism 4; a driving mechanism 7 for driving the manipulator 2 to reciprocate is arranged on the frame 1; the driving mechanism 7 includes a motor and a belt driven by the motor to rotate; the manipulator 2 is also slidably connected to the frame 1 through a slide rail; the manipulator 2 is connected to the belt; a driving air cylinder 8 for driving the pressing piece 6 to press down is arranged on the manipulator 2; one side of the pressing piece 6 is rotatably arranged on the manipulator 2; the telescopic end of the driving air cylinder 8 is connected to the pressing piece 6 through a spherical plain bearing; the pressing plate mechanism 4 includes a base plate 9 arranged on the frame 1 through a transverse air cylinder 10; and a pressing plate connected through a longitudinal air cylinder 11 from the base plate 9; a positioning air cylinder 12 with a telescopic end downward is arranged on the upper side at the corresponding position of the folding bottom plate 3; a pressing block 13 is arranged at the telescopic end of the positioning air cylinder 12; a notch corresponding to the pressing block 13 is arranged on the pressing plate.

[0021] When in use, as shown in Figures 1-3 the figure, since the folding bottom plate 3 is located under the movement path of the manipulator 2, after the manipulator 2 crosses over the folding bottom plate 3, a part of the dragged plastic bag is made to hang on the folding bottom plate 3.

[0022] As shown in Figures 1-3 the figure, the process of the manipulator 2 clamping the plastic bag is specifically that the pressing piece 6 connected by the spherical plain bearing of the driving air cylinder 8 further makes the pressing piece 6 rotate, and the plastic bag is clamped between the pressing piece 6 and the clamping bottom plate 5 at the corresponding positions of the pressing piece 6 and the clamping bottom plate 5.

[0023] The spherical plain bearing has a certain range of rotational movement, and can realize the conversion of the telescopic movement of the driving air cylinder 8 into the rotation of the pressing piece 6.

[0024] Then, the pressing of the plastic bag located on the folding bottom plate 3 is achieved through the action of the pressing plate mechanism 4. Specifically, the lateral cylinder 10 acts to drive the substrate 9 to move laterally to the corresponding position of the plastic bag on the upper side of the folding bottom plate 3, and then the longitudinal cylinder 11 moves downward to press the plastic bag onto the folding bottom plate 3.

[0025] Before the manipulator 2 of the existing plastic bag folding mechanism releases the plastic bag, the pressing plate mechanism 4 will not press the plastic bag part. Instead, after the manipulator releases the plastic bag and retracts, the pressing plate mechanism 4 then presses the plastic bag part. Then, the plastic bag detaches from the manipulator 2 part and falls onto the flipping and folding mechanism or the pushing and folding mechanism, and then cooperates with the flipping and folding mechanism or the pushing and folding mechanism to achieve the folding process.

[0026] Combined with Figures 1-3 As shown, in this application, before the manipulator 2 releases the plastic bag, the plastic bag part has been pressed by the pressing plate mechanism 4. Further, after the manipulator 2 releases the plastic bag, a part of the plastic bag still remains on the clamping bottom plate 5 of the plastic bag. Then, when the manipulator 2 moves back, this part is folded back above the pressing plate mechanism 4. The pressing block 13 extending downward by the positioning cylinder 12 presses down to press the plastic bag. When pressing down, the pressing block 13 passes through the notch of the pressing plate to avoid the problem that the pressing plate cannot be withdrawn. Then, the lateral cylinder 10 acts to drive the pressing plate to disengage from the plastic bag, realizing the folding of the plastic bag. In this process, no additional flipping and folding mechanism or moving folding mechanism is required to participate. Only by the cooperation of the manipulator 2 that originally transports the plastic bag and the pressing plate mechanism 4, the folding of the tail of the plastic is achieved.

[0027] The control mode of the present utility model is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art, which belongs to the common general knowledge in the art. And the present utility model mainly aims to protect the mechanical settings, so the control mode and circuit connection of the present utility model will not be explained in detail.

[0028] It should be understood that the above specific embodiments of the present utility model are only used for exemplary illustration or explanation of the principle of the present utility model, and do not constitute a limitation to the present utility model. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present utility model shall be included within the protection scope of the present utility model. In addition, the appended claims of the present utility model are intended to cover all changes and modification examples falling within the scope and boundary of the appended claims, or equivalent forms of such scope and boundary.

Claims

1. Plastic bag tail folding device, characterized in that: It includes a frame (1); a manipulator (2) which reciprocates and is used for clamping a plastic bag is arranged on the frame (1); a folding bottom plate (3) for placing the plastic bag to be folded is arranged under the movement path of the manipulator (2); a pressing plate mechanism (4) for pressing the plastic bag to be folded is further arranged on one side of the folding bottom plate (3) close to the plastic bag conveying direction; the manipulator (2) includes a clamping bottom plate (5) and a pressing piece (6) arranged on the clamping bottom plate (5) for pressing the plastic bag on the clamping bottom plate (5); the clamping bottom plate (5) and the pressing piece (6) of the manipulator (2) are arranged towards the input direction of the plastic bag.

2. The plastic bag tail folding device according to claim 1, characterized in that: When the manipulator (2) crosses over the folding bottom plate (3) and conveys the plastic bag onto the folding bottom plate (3), the plastic bag on the folding bottom plate (3) is pressed by the pressing plate mechanism (4), the pressing piece (6) of the manipulator (2) releases the tail of the plastic bag, and moves back to fold the tail of the plastic bag on the clamping bottom plate (5) of the manipulator (2) above the pressing plate.

3. The plastic bag tail folding device according to claim 1, wherein: There is no device for folding or turning over the plastic bag on the side of the folding bottom plate (3) away from the pressing plate mechanism (4).

4. The plastic bag tail folding device according to claim 1, characterized in that: A driving mechanism (7) for driving the manipulator (2) to reciprocate is arranged on the frame (1).

5. The plastic bag tail folding device according to claim 4, characterized in that: The driving mechanism (7) includes a motor and a belt driven by the motor to rotate; the manipulator (2) is also slidably connected to the frame (1) through a slide rail; the manipulator (2) is connected to the belt.

6. The plastic bag tail folding device according to claim 1, characterized in that: A driving air cylinder (8) for driving the pressing piece (6) to press down is arranged on the manipulator (2); one side of the pressing piece (6) is rotatably arranged on the manipulator (2); the telescopic end of the driving air cylinder (8) is connected to the pressing piece (6) through a spherical plain bearing.

7. The plastic bag tail folding device according to claim 1, characterized in that: The pressing plate mechanism (4) includes a substrate (9) arranged on the frame (1) through a transverse air cylinder (10); and a pressing plate connected to the substrate (9) through a longitudinal air cylinder (11).

8. The plastic bag tail folding device according to claim 7, characterized in that: A positioning air cylinder (12) with a telescopic end facing downwards is arranged on the upper side of the corresponding position of the folding bottom plate (3); a pressing block (13) is arranged at the telescopic end of the positioning air cylinder (12).

9. The plastic bag tail folding device according to claim 8, wherein: A notch corresponding to the pressing block (13) is arranged on the pressing plate.

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