Paper bag bottom folding mechanism

Abstract

The utility model discloses a paper bag bottom folding mechanism which comprises an operation table, a rectangular hole is formed in the operation table, a door-shaped frame is arranged on the operation table and located on one side of the rectangular hole, an air cylinder is installed on the door-shaped frame, and a shaft body of the air cylinder extends downwards and is connected with a driving plate. A vertical plate is arranged on the side face, facing the rectangular hole, of the driving plate, a gap is formed between the vertical plate and the inner side face of the rectangular hole, the vertical plate can stretch into the rectangular hole, a limiting plate capable of moving in the direction perpendicular to the vertical plate is arranged in the rectangular hole, and two width limiting plates with the adjustable distance are symmetrically arranged between the door-shaped frames on the operation table. The paper bag bottom folding mechanism can fold the bottom of a paper bag, the paper bag can be conveniently manufactured and formed by folding creases, the positions of the different creases can be adjusted, and the paper bag bottom folding mechanism is suitable for paper bags with different widths.

Description

TECHNICAL FIELD

[0001] The utility model relates to paper bag folding field, specifically, relate to a paper bag bottom folding mechanism. BACKGROUND

[0002] Paper bag bottom folding is an important step in paper bag manufacturing process, it relates to the bottom edge of paper bag folding and bonding, to form the bottom structure of paper bag. Before carrying out paper bag bottom forming, need to fold paper bag bottom to make out the crease convenient subsequent folding adhesive operation.

[0003] The disclosure number CN219820794U discloses a kind of for paper bag processing paper bag machine's bottom folding device, including device bottom plate, the both sides of the top of device bottom plate are provided with device side plate, conveying cylinder is movably hinged in the front end of the opposite inner side of device side plate, the front end of the device side plate of device bottom plate right side is fixedly connected with first motor, first auxiliary rod and second auxiliary rod are movably hinged between the opposite inner side of device side plate and far from front end and middle part, transmission cylinder is movably hinged in the middle part of device bottom plate.

[0004] The bottom folding device for paper bag processing paper bag machine does not have limiting device to both sides and bottom end of paper bag, and the use range is small. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of paper bag bottom folding mechanism, the paper bag bottom folding mechanism can fold paper bag bottom, by folding out crease to facilitate the manufacturing forming of paper bag, different crease positions can be adjusted and the paper bag of different width is suitable.

[0006] To achieve the above object, the utility model provides a kind of paper bag bottom folding mechanism, the paper bag bottom folding mechanism includes operation table, the rectangular hole is provided on the operation table, the door-shaped frame is provided on the one side of the rectangular hole on the operation table, the cylinder is installed on the door-shaped frame, the shaft body of the cylinder extends downward and is connected with drive plate, the bottom of the drive plate is connected with pressing strip by elastic member, the side of the drive plate facing the rectangular hole is provided with vertical plate, the vertical plate and the inner side of the rectangular hole form a gap, the vertical plate is set to be able to extend into the rectangular hole, the limiting plate capable of moving in the direction perpendicular to the vertical plate is provided in the rectangular hole, two distance-adjustable width-limiting plates are symmetrically provided on the operation table between the door-shaped frame.

[0007] Preferably, two shaft sliding shaft seats are arranged on the operating table at both ends of the rectangular hole respectively, and two guide light poles are perpendicularly fixed and connected to the outer ends of the upper part of the limiting plate; the guide light poles are arranged through the shaft sliding shaft seats and are in sliding fit; a screw hole communicating with the rectangular hole is arranged on the side of the operating table between the two light poles, a rotating screw is screwed in the screw hole, and the inner end of the rotating screw is rotationally connected with the limiting plate.

[0008] Preferably, a horizontal plate is fixedly connected to the bottom of the vertical plate, and the connecting part between the vertical plate and the horizontal plate is a rounded corner.

[0009] Preferably, a plurality of hole bodies are arranged at the outer end of the horizontal plate, and a plug rod is inserted into each hole body; a first spring is arranged between the plug rod and the bottom of the hole body, an end plate is fixedly connected to the outer end of the plurality of plug rods, and the bottom surface of the end plate is flush with the bottom surface of the horizontal plate; the bottom surface of the pressing strip is flush with the bottom surface of the end plate and the bottom surface of the horizontal plate in the initial state.

[0010] Preferably, a slide rod is perpendicularly fixed to the outer side of the width limiting plate, the slide rod is arranged through the vertical surface of the door-shaped frame in sliding mode, a guide sliding hole is arranged on the operating table at the outer end of the slide rod, a slide block extending downward is fixedly connected to the outer end of the slide rod, a lead screw nut is fixedly connected to the lower end of the slide block, a double-shaft motor is arranged on the bottom surface of the operating table, and two adjusting screws in opposite directions are fixedly connected to the two shafts of the double-shaft motor, and the adjusting screws are screwed into the lead screw nut.

[0011] Preferably, a curved reverse slide plate is arranged at the outer end of the width limiting plate.

[0012] Preferably, a guide rod is arranged on the driving plate at both sides of the shaft body; and the guide rod is arranged through the top plate of the door-shaped frame in sliding mode.

[0013] Preferably, the elastic member comprises a plurality of elastic telescopic tubes, each elastic telescopic tube comprises a main tube body and a rod arranged in the main tube body, and a second spring is arranged between the rod and the inner end of the main tube body.

[0014] Preferably, a plurality of supporting columns are arranged on the bottom of the operating table.

[0015] According to the technical scheme, the paper bag bottom folding mechanism comprises an operation table, a rectangular hole is arranged on the operation table, a door-shaped frame is arranged on one side of the rectangular hole on the operation table, a cylinder is installed on the door-shaped frame, the shaft body of the cylinder extends downward and is connected with a driving plate, an elastic piece is connected with a pressing strip at the bottom of the driving plate, a vertical plate is arranged on the side of the driving plate facing the rectangular hole, a gap is formed between the vertical plate and the inner side of the rectangular hole, the vertical plate is arranged to be capable of extending into the rectangular hole, a limiting plate capable of moving in the direction perpendicular to the vertical plate is arranged in the rectangular hole, and two width-limiting plates capable of adjusting distance are symmetrically arranged on the operation table between the door-shaped frames.

[0016] The paper bag bottom folding mechanism has the following beneficial effects: 1. The two width-limiting plates capable of adjusting distance can fold creases on the bottom of paper bags of different widths; 2. The limiting plate can limit the position of the bottom of the paper bag during folding, so that the folding size is uniform; 3. The pressing strip connected with the elastic piece can press the edge of the bent part of the paper bag before the vertical plate contacts the paper bag, and when the vertical plate folds the paper bag, the stability of folding is improved; 4. The gap can effectively prevent the paper bag from being cut.

[0017] Other features and advantages of the present application will be described in detail in the following specific implementation manner part. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the following specific implementation manner to explain the present application, but do not constitute a limitation on the present application. In the drawings:

[0019] Figure 1 is a whole structure schematic view of a preferred embodiment of the paper bag bottom folding mechanism;

[0020] Figure 2 is Figure 1 a structure schematic view of another view of

[0021] Figure 3 is Figure 1 a top structure schematic view of

[0022] Figure 4 is Figure 3 an A-A cross section structure schematic view of

[0023] Figure 5 is Figure 1 a bottom structure schematic view of

[0024] BRIEF DESCRIPTION OF DRAWINGS

[0025] 1-Operating table; 2-Guide sliding hole; 3-Support column; 4-Gantry frame; 5-Drive plate; 6-Guide rod; 7-Cylinder; 8-Axis sliding bearing seat; 9-Guide light rod; 10-Dual-axis motor; 11-Width limiting plate; 12-Curved inverted slide plate; 13-Screw nut; 14-Slide rod; 15-Upright plate; 16-Horizontal plate; 17-Limiting plate; 18-Rotating screw; 19-Insertion rod; 20-Adjusting screw; 21-End plate; 22-Rectangular hole; 23-First spring; 24-Gap; 25-Pressure strip; 26-Main body; 27-Rod; 28-Second spring. Detailed Implementation

[0026] 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.

[0027] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0028] See Figures 1-5 The paper bag bottom folding mechanism shown includes an operating table 1 with a rectangular hole 22. A gantry frame 4 is located on one side of the rectangular hole 22 on the operating table 1. A cylinder 7 is mounted on the gantry frame 4. The shaft of the cylinder 7 extends downward and is connected to a drive plate 5. A pressure strip 25 is connected to the bottom of the drive plate 5 via an elastic element. A vertical plate 15 is provided on the side of the drive plate 5 facing the rectangular hole 22. A gap 24 is formed between the vertical plate 15 and the inner side of the rectangular hole 22. The vertical plate 15 is configured to extend into the rectangular hole 22. A limiting plate 17 that can move in a direction perpendicular to the vertical plate 15 is provided in the rectangular hole 22. Two width limiting plates 11 with adjustable distance are symmetrically arranged between the gantry frames 4 on the operating table 1.

[0029] By implementing the above technical solution, the two adjustable width limiting plates 11 can create folds at the bottom of paper bags of different widths; the limiting plate 17 can restrict the position of the bottom of the paper bag when folding, so that the folding size is uniform; the pressure strip 25 connected to the elastic element presses the edge of the paper bag at the bend before the upright plate 15 contacts the paper bag, thus improving the stability of the folding when the upright plate 15 presses down on the paper bag; and the set gap 24 can effectively prevent the paper bag from being sheared.

[0030] When using the paper bag bottom folding mechanism, the paper bag bottom to be folded is pushed towards the direction of the limiting plate 17, the width is limited by the width limiting plates 11 on both sides, the bottom is limited by the limiting plate 17, then the cylinder 7 is started to push the pressing strip 25 to press down, after the pressing strip 25 presses down on the paper bag, the vertical plate 15 starts to push down and fold the paper bag bottom, so that the paper bag is pressed to form an indentation, and then the paper bag is taken out for the next bag making operation. Due to the setting of the indentation, the size of the folded part is more accurate during the bag making operation.

[0031] In this embodiment, one shaft sliding shaft seat 8 is arranged at each end of the rectangular hole 22 on the operation table 1, and a guide light rod 9 is perpendicularly fixed and connected at the outer end of the upper part of the limiting plate 17; the guide light rod 9 penetrates through the shaft sliding shaft seat 8 and is in sliding fit, and a screw hole communicating with the rectangular hole 22 is arranged on the side of the operation table 1 between the two light rods, a rotating screw rod 18 is screwed in the screw hole, and the inner end of the rotating screw rod 18 is rotationally connected with the limiting plate 17. Through such arrangement, the front and back positions of the limiting plate 17 can be adjusted by rotating the rotating screw rod 18 under the guidance of the guide light rod 9.

[0032] In this embodiment, the bottom of the vertical plate 15 is fixedly connected with a horizontal plate 16, and the connection between the vertical plate 15 and the horizontal plate 16 is a rounded corner. Through such arrangement, the contact area with the paper bag is increased, and damage to the paper bag is avoided.

[0033] In this embodiment, a plurality of holes are arranged at the outer end of the horizontal plate 16, and a plug rod 19 is inserted in each hole; a first spring 23 is arranged between the plug rod 19 and the bottom of the hole, a plurality of end plates 21 are fixedly connected with the outer end of the plug rod 19, the bottom surface of the end plate 21 is flush with the bottom surface of the horizontal plate 16, and the bottom surface of the pressing strip 25 is flush with the bottom surface of the end plate 21 and the bottom surface of the horizontal plate 16 in the initial state. The end plate 21 further increases the area of the pressure surface and reduces the possibility of damage to the paper bag, and the end plate 21 is elastically contacted with the limiting plate 17 under the action of the first spring 23 and moves with the position of the limiting plate 17.

[0034] In the embodiment, the outer side of the width limiting plate 11 is vertically fixed with a sliding rod 14 which is slidingly arranged through the vertical surface of the door-shaped frame 4, and the outer end of the sliding rod 14 is fixed with a sliding block extending downward, and the lower end of the sliding block is fixed with a screw rod nut 13, and the bottom surface of the operation table 1 is provided with a double-shaft motor 10, and the two ends of the double-shaft motor 10 are connected with adjusting screw rods 20 which are reversely opposite in screwing, and the adjusting screw rods 20 are screwed with the screw rod nut 13. Through the operation of the double-shaft motor 10, the rotation of the adjusting screw rods 20 is driven, and the two width limiting plates 11 are relatively or oppositely moved under the cooperation of the screw rod nut 13, so as to adjust the width limiting width.

[0035] In the embodiment, the outer end of the width limiting plate 11 is provided with a curved surface reverse sliding plate 12. Through such arrangement, it is easier to push and put into the paper bag.

[0036] In the embodiment, the driving plate 5 is provided with guide rods 6 at both sides of the shaft body, and the guide rods 6 are slidingly arranged through the top plate of the door-shaped frame 4. Through such arrangement, the vertical movement of the driving plate 5 is more stable.

[0037] In the embodiment, in order to further provide a resilient member, the resilient member comprises a plurality of elastic telescopic pipes, and each elastic telescopic pipe comprises a main pipe body 26 and a rod member 27 arranged in the main pipe body 26, and a second spring 28 is arranged between the rod member 27 and the inner end of the main pipe body 26. The main pipe body 26 is connected with the driving plate 5, the rod member 27 is connected with the pressing strip 25, and of course, a limiting structure is further arranged between the main pipe body 26 and the rod member 27, so that the two will not slip off each other, for example, a first blocking ring is arranged at the lower end inner edge of the main pipe body 26, and a second blocking ring is arranged at the upper end outer edge of the rod member 27.

[0038] In the embodiment, in order to further provide an operation table 1, a plurality of supporting columns 3 are arranged at the bottom of the operation table 1.

[0039] 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 embodiments, and various simple modifications can be made to the technical scheme 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.

[0040] 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 combination manners.

[0041] In addition, various different embodiments of the present application can be combined arbitrarily, as long as they do not violate the spirit of the present application, and should be considered as disclosed by the present application.

Claims

1. A paper bag bottom folding mechanism characterized by comprising: The paper bag bottom folding mechanism comprises an operation table (1), a rectangular hole (22) is arranged on the operation table (1), a door-shaped frame (4) is arranged on one side of the rectangular hole (22) of the operation table (1), a cylinder (7) is installed on the door-shaped frame (4), the shaft body of the cylinder (7) extends downward and is connected with a driving plate (5), the bottom of the driving plate (5) is connected with a pressing strip (25) through an elastic member, the side of the driving plate (5) facing the rectangular hole (22) is provided with a vertical plate (15), a gap (24) is formed between the vertical plate (15) and the inner side of the rectangular hole (22), the vertical plate (15) is arranged to be capable of extending into the rectangular hole (22), a limiting plate (17) capable of moving in a direction perpendicular to the vertical plate (15) is arranged in the rectangular hole (22), two distance-adjustable width-limiting plates (11) are symmetrically arranged on the operation table (1) between the door-shaped frames (4).

2. The paper sack bottom folding mechanism as recited in claim 1, wherein Two shaft sliding shaft seats (8) are arranged on the operation table (1) at positions respectively at two ends of the rectangular hole (22), the outer ends of the two ends of the upper part of the limiting plate (17) extend outward and are vertically fixedly connected with guide light rods (9); The guide light rods (9) are arranged through the shaft sliding shaft seats (8) and are in sliding fit, a screw hole communicating with the rectangular hole (22) is arranged on the side of the operation table (1) between the two light rods, a rotating screw rod (18) is screwed in the screw hole, and the inner end of the rotating screw rod (18) is rotationally connected with the limiting plate (17).

3. The paper sack bottom folding mechanism as recited in claim 1, wherein The bottom of the vertical plate (15) is fixedly connected with a horizontal plate (16), and the connecting part between the vertical plate (15) and the horizontal plate (16) is a round corner.

4. The paper sack bottom folding mechanism of claim 3 wherein, The outer end of the horizontal plate (16) is provided with a plurality of hole bodies, and a plug rod (19) is inserted into each hole body; A first spring (23) is arranged between the plug rod (19) and the bottom of the hole body, an end plate (21) is fixedly connected to the outer ends of the plurality of plug rods (19), and the bottom surface of the end plate (21) is flush with the bottom surface of the horizontal plate (16); The bottom surface of the pressing strip (25) is flush with the bottom surface of the end plate (21) and the bottom surface of the horizontal plate (16) in the initial state.

5. The paper sack bottom folding mechanism as recited in claim 1 wherein, A slide rod (14) is vertically fixedly connected to the outer side of the width-limiting plate (11), the slide rod (14) is arranged in sliding fit through the vertical surface of the door-shaped frame (4), and a guide sliding hole (2) is arranged on the operation table (1) at a position outside the outer end of the slide rod (14); The outer end of the slide rod (14) is fixedly connected with a slide block extending downward, the lower end of the slide block is fixedly connected with a screw nut (13), the bottom surface of the operation table (1) is provided with a double-shaft motor (10), the two end shafts of the double-shaft motor (10) are connected with adjusting screw rods (20) which are screw-connected to the screw nut (13) and are oppositely arranged in a screwing direction.

6. The paper sack bottom folding mechanism as recited in claim 1, wherein The outer end of the width-limiting plate (11) is provided with a curved inverted slide plate (12).

7. The paper sack bottom folding mechanism of claim 1 wherein, Guide rods (6) are arranged on the driving plate (5) at positions on both sides of the shaft body; The guide rods (6) are arranged in sliding fit through the top plate of the door-shaped frame (4).

8. The paper sack bottom folding mechanism of claim 1 wherein, The elastic member comprises a plurality of elastic telescopic tubes, each of which comprises a main tube body (26) and a rod (27) arranged in the main tube body (26), and a second spring (28) is arranged between the rod (27) and the inner end of the main tube body (26).

9. The paper sack bottom folding mechanism of claim 1 wherein, The bottom of the operation table (1) is provided with a plurality of supporting columns (3).

Images