Paper bag edge folding device

Abstract

The utility model discloses a paper bag edge folding device which comprises a base, rotating shafts are rotatably arranged on the two sides of the base respectively, the two ends of each rotating shaft are connected with folding plates respectively so that the folding plates can turn over in a vertical plane, long groove structures are arranged at the positions, close to the folding plates, in the base, and the long groove structures are connected with the folding plates. An air cylinder is arranged at the end of the base, a cross rod is connected to a piston rod of the air cylinder, a pressing strip is arranged at the end of the cross rod so that the pressing strip can move into the long groove structure, and a positioning pin is arranged on the surface of the folded plate. The problems that according to an edge folding machine in the prior art, a rope is used for driving a movable plate to turn over so as to conduct folding operation, feeding and discharging are inconvenient due to the arrangement of the rope, and the edge folding machine is not prone to positioning the folding mark position are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to paper bag processing field, and concretely relates to a paper bag folding device. BACKGROUND

[0002] In the paper bag processing field, the edge of the paperboard needs to be folded for subsequent gluing and bonding forming. For example, a full-automatic folding machine is provided in Chinese patent No. CN202021473684.4, which comprises a device main body, a first positioning mechanism, an adjusting block and a second positioning mechanism. The device main body is a cuboid structure, and four corners of the bottom of the device main body are fixed with support legs through bolts. Two groups of support vertical plates are constructed in the middle of the two sides of the upper end surface of the device main body, and the upper end surfaces of the two groups of support vertical plates are provided with a support horizontal plate. The first positioning mechanism is arranged at the bottom of the support horizontal plate, and the adjusting block is arranged in the middle of the top of the support horizontal plate. Two groups of second rotating motors are symmetrically arranged on one side of the upper end surface of the device main body between the two groups of support vertical plates, and the second positioning mechanism is arranged between the second rotating motors and the two groups of support vertical plates. An activity plate is arranged on the other side of the upper end surface of the device main body between the two groups of support vertical plates, and a fixed ring is arranged in the middle of the side of the activity plate away from the support vertical plate. A rope is arranged in the fixed ring and extends into the adjusting block. The folding machine in the prior art such as the above uses the rope to drive the activity plate to overturn to perform folding operation. The arrangement of the rope is not convenient for feeding and discharging, and the device is not easy to position the folding mark position. SUMMARY

[0003] The utility model aims at providing a paper bag folding device, which solves the problem of the folding machine in the prior art, which uses a rope to drive an activity plate to overturn to perform folding operation. The arrangement of the rope is not convenient for feeding and discharging, and the device is not easy to position the folding mark position.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a paper bag folding device, which comprises a base, two rotating shafts are arranged on the two sides of the base respectively, the two ends of the rotating shaft are connected with folding plates respectively, so that the folding plates can overturn in a vertical plane, a long groove structure is arranged in the base near the folding plates, an air cylinder is arranged at the end of the base, a cross bar is connected to the piston rod of the air cylinder, a pressing strip is arranged at the end of the cross bar, so that the pressing strip can be displaced into the long groove structure, and a positioning pin is arranged on the surface of the folding plate.

[0005] Preferably, an arch body is arranged at the end of the base, a motor is arranged on the arch body, and the output shaft of the motor is coaxially connected with the rotating shaft.

[0006] Preferably, a rubber strip is wrapped around the pressing strip.

[0007] Preferably, the surface of the flaps is provided with through holes, and the bottom of the positioning pin is connected in the through holes by a spring.

[0008] Preferably, the positioning pins on each of the flaps are not less than two groups.

[0009] Preferably, rotating cavities are formed on both sides of the base, bearings are arranged in the rotating cavities, and the rotating shafts are at least partially located in the bearings.

[0010] Beneficial effects: the paper bag edge folding device can position and feed paper materials, and can also form creases in advance, so that the edge folding position is more accurate, and deviation is avoided.

[0011] Other features and advantages of the present application will be described in detail in the following specific implementation part. BRIEF DESCRIPTION OF DRAWINGS

[0012] The accompanying drawings are used to provide further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with the following specific implementation, but do not constitute a limitation to the present application. In the drawings:

[0013] Figure 1 Fig. 1 is a first structure diagram of the paper bag edge folding device provided by the present application;

[0014] Figure 2 Fig. 2 is a second structure diagram of the paper bag edge folding device provided by the present application;

[0015] Figure 3 Fig. 3 is an enlarged view of part A in Fig. 1. Figure 2

[0016] Explanation of reference signs

[0017] 1-base; 2-flap; 3-rotating shaft; 4-positioning pin; 5-frame body; 6-motor; 7-cylinder; 8-cross bar; 9-pressing strip; 10-long groove structure. DETAILED DESCRIPTION​

[0018] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0019] like Figures 1-3 As shown: This utility model provides a paper bag folding device, which includes a base 1, with rotating shafts 3 rotatably arranged on both sides of the base 1. Folding plates 2 are connected to both ends of the rotating shafts 3, allowing the folding plates 2 to flip in a vertical plane. A long groove structure 10 is provided in the base 1 near the folding plates 2. A cylinder 7 is provided at the end of the base 1. A crossbar 8 is connected to the piston rod of the cylinder 7. A pressure strip 9 is provided at the end of the crossbar 8, allowing the pressure strip 9 to be displaced into the long groove structure 10. A positioning pin 4 is provided on the surface of the folding plate 2. During operation, the paper material is placed on the base surface, with its two sides abutting against the positioning pins to position it. Then, the cylinder is activated, causing the pressure strip to press into the long groove structure, forming indentations on both sides of the paper material. After the cylinder is reset, the folding plates on both sides are flipped to fold the edges of the paper material. The paper bag folding device provided by this utility model can position and feed the paper material, and can also pre-form folds to make the folding position more accurate and avoid skewing.

[0020] In a preferred embodiment of this utility model, in order to drive the folding plate to rotate, a frame 5 is provided at the end of the base 1, and a motor 6 is provided on the frame 5. The output shaft of the motor 6 is coaxially connected to the rotating shaft 3.

[0021] In a preferred embodiment of this utility model, in order to avoid damage and wear to the indentation area caused by the pressure strip, the pressure strip 9 is wrapped with an adhesive strip.

[0022] In a preferred embodiment of this utility model, in order to allow the positioning pin to retract after the folding plate is flipped so as not to affect the folding operation, the surface of the folding plate 2 is provided with a through hole, and the bottom of the positioning pin 4 is connected to the through hole by a spring.

[0023] In a preferred embodiment of this utility model, in order to facilitate the contact positioning of the two sides of the paper material, there are no less than two sets of positioning pins 4 on each of the folding plates 2.

[0024] In a preferred embodiment of this utility model, in order to enable the rotating shaft to rotate smoothly, rotating cavities are formed on both sides of the base 1, and bearings are provided in the rotating cavities, with the rotating shaft 3 located at least partially within the bearings.

[0025] The preferred embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the specific details in the above-described embodiments, and various simple modifications can be made to the technical solutions of the present application within the technical concept of the present application, and these simple modifications all belong to the protection scope of the present application.

[0026] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the present application will not further describe various possible combinations.

[0027] In addition, various different embodiments of the present application can also be combined in any manner, as long as they do not deviate from the concept of the present application, and they should also be considered as disclosed by the present application.

Claims

1. A paper bag flanging apparatus characterized by, The paper bag edge folding device comprises a base (1), both sides of the base (1) are rotatably provided with rotating shafts (3), both ends of the rotating shafts (3) are connected with folding plates (2), so that the folding plates (2) can be flipped in a vertical plane, a long slot structure (10) is arranged in the base (1) near the folding plates (2), an end of the base (1) is provided with a pneumatic cylinder (7), a crossbar (8) is connected to a piston rod of the pneumatic cylinder (7), an end of the crossbar (8) is provided with a pressing strip (9), so that the pressing strip (9) can be displaced into the long slot structure (10), and the surface of the folding plate (2) is provided with a positioning pin (4).

2. The paper sack flanging apparatus according to claim 1, wherein An end of the base (1) is provided with a frame body (5), the frame body (5) is provided with a motor (6), and the output shaft of the motor (6) is coaxially connected with the rotating shaft (3).

3. The paper sack flanging apparatus according to claim 2, wherein The pressing strip (9) is wrapped with a rubber strip.

4. The paper sack flanging apparatus according to claim 3, wherein The surface of the folding plate (2) is provided with a through hole, and the bottom of the positioning pin (4) is connected in the through hole through a spring.

5. The paper sack flanging apparatus according to claim 4 wherein, The positioning pin (4) on each folding plate (2) is not less than two groups.

6. The paper sack flanging apparatus according to claim 5 wherein, Both sides of the base (1) are formed with rotating cavities, bearings are arranged in the rotating cavities, and the rotating shafts (3) are at least partially located in the bearings.

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