Woven bag flattening device

Abstract

The utility model relates to the field of woven bag processing, in particular to a woven bag flattening device, which is characterized in that two first compression rollers which are arranged in parallel up and down are arranged on a bottom plate, and the length of the first compression rollers is smaller than the width of a woven bag; two second pressing rollers which are arranged in parallel up and down are arranged on the rear sides of the two first pressing rollers, and the length of the second pressing rollers is larger than the width of the woven bag; two supporting rods which are oppositely arranged left and right are arranged on the front sides of the two first pressing rollers, and the two supporting rods open the woven bag in the width direction. The two first pressing rollers rotate oppositely and drive the woven bag to move in the direction away from the supporting rod. The two second pressing rollers rotate oppositely and drive the woven bag to move in the direction away from the two first pressing rollers. The two first pressing rollers rotate oppositely and drive the woven bag to move backwards to be separated from the supporting rod, the woven bag backwards penetrates through the first pressing rollers and then enters the position between the two second pressing rollers, the whole woven bag is further flattened through the two second pressing rollers, and flattened four corners are eliminated.

Description

Technical Field

[0001] The utility model relates to the field of woven bag processing, and particularly relates to a flattening device for woven bags. Background Art

[0002] A woven bag, also known as a snake skin bag, is a type of plastic bag. Its raw materials are generally various chemical plastic raw materials such as polyethylene and polypropylene. Woven bags have a wide range of uses, mainly for the packaging and loading of various items, and are widely used in the industrial field. When woven bags are produced, they need to be flattened to keep the surface of the woven bags flat and beautiful.

[0003] In the prior art, the utility model patent with the application number CN202323490464.9 discloses a flattening device for plastic woven bags, which includes a table board. Clamping components are arranged at the four corners of the top of the table board. The front side top of the vertical board is fixedly connected with an electric push rod. The output end of the electric push rod is fixedly connected with a connecting block, and a flattening component is arranged below the connecting block. It can flatten and fix the plastic woven bag before flattening, and will not produce indentation due to its own folds during flattening, so as to ensure the flattening effect.

[0004] However, the above-mentioned flattening device can only flatten the woven bag between the four groups of clamping components, and the clamped parts of the woven bag cannot be effectively flattened, resulting in the retention of flattened corners and reducing the flattening effect of the woven bag, which needs to be improved. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a flattening device for woven bags, which can flatten the woven bag and avoid flattening the four corners, so as to solve the defects put forward in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A flattening device for woven bags includes a bottom plate. Two first pressing rollers are arranged on the bottom plate in a vertically juxtaposed manner. The first pressing rollers extend horizontally, and the length of the first pressing rollers is less than the width of the woven bag. Two second pressing rollers are arranged behind the two first pressing rollers in a vertically juxtaposed manner. The second pressing rollers extend horizontally, and the length of the second pressing rollers is greater than the width of the woven bag. Two support rods are arranged in front of the two first pressing rollers and are oppositely arranged left and right. The two support rods expand the woven bag in the width direction. The two first pressing rollers rotate towards each other and drive the woven bag to move away from the support rods. The two second pressing rollers rotate towards each other and drive the woven bag to move away from the two first pressing rollers.

[0008] As a preferred technical solution, a mounting seat driven to rotate by a power device is provided on the front side of the two first pressure rollers, and the rotation axis of the mounting seat extends laterally. A mounting box driven to move by a power component is provided on one side of the mounting seat, and the movement direction of the mounting box is perpendicular to the rotation axis of the mounting seat. The two support rods are movably mounted on the mounting box.

[0009] As a preferred technical solution, the support rod extends in a direction parallel to the moving direction of the installation box.

[0010] As a preferred technical solution, two sliders are arranged opposite to each other on the left and right sides of the installation box, and one end of the support rod is fixedly installed on the corresponding slider; the slider is slidably installed on the left and right sides of the installation box, and a linkage mechanism is provided in the installation box for driving the two sliders to move closer or away from each other.

[0011] As a preferred technical solution, the linkage mechanism includes a rack fixedly mounted on the slider, a gear is rotatably mounted in the mounting box, and the racks on the two sliders are respectively meshed on opposite sides of the gear; a spring is connected between the two sliders, and one of the sliders abuts against a push plate on the side facing away from the spring, and the push plate is driven by a driving component and slid left and right in the mounting box.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The woven bag is put on the outside of the two support rods, and the woven bag is stretched left and right along the width direction by the two support rods, so that the woven bag is kept flat, thereby improving the flattening effect of the first pressing roller and the second pressing roller on the woven bag;

[0014] The length of the first pressing roller is smaller than the width of the woven bag, and the length of the second pressing roller is larger than the width of the woven bag. The two first pressing rollers rotate towards each other and drive the woven bag to move backward and leave the support rod. The woven bag passes backward through the first pressing roller and enters between the two second pressing rollers. The two second pressing rollers further flatten the woven bag as a whole, eliminate the flattening of the four corners, and improve the flattening effect of the woven bag.

[0015] The two sliders are driven to approach each other through the linkage mechanism, and then the two sliders drive the two support rods to approach each other, so that the staff can easily put the woven bag on the outside of the two support rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0018] Figure 2 is Figure 1 a top view schematic diagram of

[0019] Figure 3 is a schematic structural diagram of the installation box in an embodiment of the present invention;

[0020] Figure 4 is a schematic structural diagram of the support rod in an embodiment of the present invention.

[0021] In the figure: 1 - bottom plate; 2 - support plate; 3 - first pressure roller; 4 - second pressure roller; 5 - support rod; 6 - drive box; 7 - mounting seat; 8 - vertical plate; 9 - power motor; 10 - installation box; 11 - guide rod; 12 - cylinder; 13 - slider; 14 - strip hole; 15 - slide rod; 16 - rack; 17 - gear; 18 - spring; 19 - push plate; 20 - electric push rod. Detailed implementation manners

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0023] Such as Figures 1 to 4As shown in the figure, a flattening device for woven bags includes a bottom plate 1. On the top of the bottom plate 1, two support plates 2 arranged oppositely left and right are fixedly installed by bolts. Between the two support plates 2, two first pressing rollers 3 arranged side by side up and down are rotatably installed through bearings. The first pressing rollers 3 extend horizontally, and the length of the first pressing rollers 3 is less than the width of the woven bag. Between the two support plates 2, two second pressing rollers 4 arranged side by side up and down are also rotatably installed through bearings. The two second pressing rollers 4 are respectively located behind the corresponding first pressing rollers 3. The second pressing rollers 4 extend horizontally, and the length of the second pressing rollers 4 is greater than the width of the woven bag. In front of the two first pressing rollers 3, two support rods 5 arranged oppositely left and right are provided. The two support rods 5 expand the woven bag in the width direction. The two first pressing rollers 3 rotate towards each other and drive the woven bag to move backward in a direction away from the support rods 5; the two second pressing rollers 4 rotate towards each other and drive the woven bag to move backward in a direction away from the two first pressing rollers 3.

[0024] In this embodiment, a drive box 6 is installed outside one of the support plates 2. A drive mechanism for driving the first pressing rollers 3 and the second pressing rollers 4 to rotate is provided in the drive box 6. For example, one end of each of the two first pressing rollers 3 extends into the drive box 6 and is fixedly installed with a first gear that meshes with each other. And one end of one of the first pressing rollers 3 is also connected to a first motor, so as to drive the two first pressing rollers 3 to rotate towards each other through the first motor; one end of each of the two second pressing rollers 4 extends into the drive box 6 and is fixedly installed with a second gear that meshes with each other. And one end of one of the second pressing rollers 4 is also connected to a second motor, so as to drive the two second pressing rollers 4 to rotate towards each other through the second motor.

[0025] During specific use, first, the woven bag is sleeved outside the two support rods 5. The two support rods 5 expand the woven bag left and right in the width direction to keep the woven bag in a flattened state, improving the flattening effect of the first pressing rollers 3 and the second pressing rollers 4 on the woven bag; then, the two support rods 5 are moved backward and towards the first pressing rollers 3, so that the rear end of the woven bag between the two support rods 5 enters between the two first pressing rollers 3. The two first pressing rollers 3 rotate towards each other and drive the woven bag to move backward away from the support rods 5, and the two first pressing rollers 3 perform step-by-step flattening on the woven bag between the two support rods 5; after the woven bag passes through the first pressing rollers 3 backward, it enters between the two second pressing rollers 4, and the two second pressing rollers 4 further flatten the whole woven bag to eliminate the flattened corners and improve the flattening effect on the woven bag.

[0026] On the front side of the two first pressing rollers 3, there is a mounting base 7 driven to rotate by a power device. The axis of rotation of the mounting base 7 extends horizontally. At the front end of the bottom plate 1, two vertically arranged plates 8 are fixedly installed in a left-right opposite manner by bolts. The left and right ends of the mounting base 7 are respectively fixedly installed with horizontally extending mounting shafts, and the mounting shafts are rotatably installed on the corresponding plates 8 through bearings. The power device is specifically a power motor 9. The power motor 9 is installed on the outer side of one of the plates 8 by bolts, and the mounting shaft at one end of the mounting base 7 is connected to the rotating shaft of the power motor 9 through a coupling. On one side of the mounting base 7, there is a mounting box 10 driven to move by a power component. The moving direction of the mounting box 10 is perpendicular to the axis of rotation of the mounting base 7. Both of the two support rods 5 are movably installed on the mounting box 10, and the support rods 5 extend along a direction parallel to the moving direction of the mounting box 10.

[0027] On the side of the mounting box 10 facing away from the support rod 5, a guide rod 11 extending radially along the mounting shaft is fixedly installed. The guide rod 11 is slidably installed on the mounting base 7; the power component is specifically a cylinder 12 with a piston rod parallel to the guide rod 11. The cylinder block of the cylinder 12 is fixedly installed on the mounting base 7 by bolts, and the piston rod is fixedly installed on the mounting box 10 by bolts.

[0028] During specific use, first, the power motor 9 drives the mounting base 7 to rotate, so that the mounting box 10 rotates to the top of the mounting base 7 and the support rods 5 extend upward, so that the staff can put the woven bag on the two support rods 5; after the woven bag is put on, the power motor 9 drives the mounting base 7 to rotate in the reverse direction, so that the mounting box 10 rotates to the rear side of the mounting base 7 and the support rods 5 extend horizontally backward. Then, the cylinder 12 extends to drive the mounting box 10 and the support rods 5 to move backward, so that the rear end of the woven bag enters between the two first pressing rollers 3.

[0029] As Figure 3 shown, inside the mounting box 10, there are two sliders 13 arranged in a left-right opposite manner. One end of the support rod 5 is welded to the corresponding slider 13. On one side of the mounting box 10, there is a strip-shaped hole 14 for the support rod 5 to pass through; the sliders 13 are slidably installed left and right inside the mounting box 10. Inside the mounting box 10, a horizontally extending slide rod 15 is fixedly installed by bolts, and both of the two sliders 13 are slidably installed on the slide rod 15. When the sliders 13 slide along the slide rod 15, they can drive the support rods 5 to move in the strip-shaped hole 14; inside the mounting box 10, there is a linkage mechanism for driving the two sliders 13 to approach or move away from each other. Specifically, the linkage mechanism drives the two sliders 13 to approach each other, and then the two sliders 13 drive the two support rods 5 to approach each other, so that the staff can easily put the woven bag on the outside of the two support rods 5; after the woven bag is put on, the linkage mechanism drives the two sliders 13 to move away from each other, and then the two sliders 13 drive the two support rods 5 to move away from each other, so as to stretch the woven bag left and right in the width direction.

[0030] The linkage mechanism includes a rack 16 fixedly installed on the slider 13 by bolts, the rack 16 extends horizontally, and a gear 17 is rotatably installed in the installation box 10. The racks 16 on the two sliders 13 are respectively meshed with the opposite sides of the gear 17, so that the two sliders 13 can be synchronously approached or moved away from each other; a spring 18 is connected between the two sliders 13, and the spring 18 is sleeved on the slide bar 15 located between the two sliders 13; the side of the left slider 13 facing away from the spring 18 abuts against a push plate 19, and the push plate 19 is slidably installed on the slide bar 15. The push plate 19 is driven by a driving component and slidably installed in the installation box 10 left and right. The driving component is specifically an electric push rod 20. The body of the electric push rod 20 is fixedly installed on the left side of the installation box 10 by bolts, and the push rod of the electric push rod 20 extends to the right into the installation box 10 and is fixedly connected to the push plate 19. Specifically, the push plate 19 is moved to the right by extending the electric push rod 20, and then the push plate 19 pushes the left slider 13 to move to the right, and the left and right sliders 13 approach each other synchronously and compress the spring 18; or the push plate 19 is moved to the left by contracting the electric push rod 20, and then the compressed spring 18 extends and pushes the two sliders 13 to move away from each other synchronously.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A woven bag flattening device, characterized in that: It includes a bottom plate, on which are provided two first pressing rollers arranged in parallel up and down, the first pressing rollers extend laterally, and the length of the first pressing rollers is less than the width of the woven bag; the rear sides of the two first pressing rollers are provided with two second pressing rollers arranged in parallel up and down, the second pressing rollers extend laterally, and the length of the second pressing rollers is greater than the width of the woven bag; the front sides of the two first pressing rollers are provided with two support rods arranged opposite to each other on the left and right, and the two support rods open the woven bag in the width direction; the two first pressing rollers rotate towards each other and drive the woven bag to move in the direction away from the support rods; the two second pressing rollers rotate towards each other and drive the woven bag to move in the direction away from the two first pressing rollers.

2. A woven bag flattening device as claimed in claim 1, characterized in that: A mounting seat driven to rotate by a power device is provided on the front side of the two first pressure rollers, and the axis of rotation of the mounting seat extends laterally. A mounting box driven to move by a power component is provided on one side of the mounting seat, and the direction of movement of the mounting box is perpendicular to the axis of rotation of the mounting seat. The two support rods are movably mounted on the mounting box.

3. A woven bag flattening device as claimed in claim 2, characterized in that: The support rods extend in a direction parallel to the movement direction of the installation box.

4. A woven bag flattening device as claimed in claim 2, characterized in that: Two sliders are arranged opposite to each other in the installation box, and one end of the support rod is fixedly installed on the corresponding slider; the slider is slidably installed in the installation box, and a linkage mechanism is provided in the installation box for driving the two sliders to move closer to or away from each other.

5. A woven bag flattening device as claimed in claim 4, characterized in that: The linkage mechanism includes a rack fixedly mounted on the slider, a gear rotatably mounted in the mounting box, and the racks on the two sliders are respectively meshed with the opposite sides of the gear; a spring is connected between the two sliders, and one of the sliders abuts against a push plate on the side away from the spring, and the push plate is driven by a driving component and slidably mounted left and right in the mounting box.

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