Automatic binding machine for PET plastic steel packing belt

Abstract

The utility model provides a kind of PET plastic steel packing belt automatic bundling machine, it is related to packaging material processing equipment field;Including base, base top is provided with telescopic fixed shaft, base top is provided with recess;Recess is directly opposite below telescopic fixed shaft, recess bottom wall and opposite two inner walls are provided with strip groove;Three strip grooves are formed into the conveying groove of U shape in common;U-shaped conveyor belt is provided in conveying groove;One side in base interior is provided with unwinding mechanism and bending guide mechanism, unwinding mechanism is unwound along horizontal direction with bundling belt;Bending guide mechanism is set in the rear end of unwinding mechanism along unwinding direction, and located above one end of U-shaped conveyor belt, for sending in U-shaped conveyor belt after being vertically bent downwards with bundling belt;Two sides of base interior and the opposite ends of U-shaped conveyor belt are respectively provided with hot die head, and hot die head is driven to relative telescopic by telescopic mechanism. Automatic bundling can be carried out to packing belt of annular stacking belt, without manual operation, and bundling efficiency can be greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging material processing equipment, and more specifically, to an automatic PET plastic steel strapping machine. Background Technology

[0002] PET plastic steel strapping is widely used in product bundling and packaging in industries such as logistics, building materials, papermaking, and metallurgy due to its advantages such as high strength, high toughness, corrosion resistance, and environmental friendliness.

[0003] Currently, the production and processing of PET plastic strapping involves stacking the strapping into loops, then bundling multiple loops together for easy transport. Existing technologies mostly employ manual bundling, but this method is labor-intensive, slow, and inefficient. Utility Model Content

[0004] The purpose of this invention is to provide an automatic PET plastic steel strapping machine, which can automatically strap the circular stacked straps without manual operation, greatly improving strapping efficiency and saving time and costs.

[0005] The embodiments of this utility model are implemented as follows:

[0006] This application provides an automatic PET plastic steel strapping machine, including a base, a telescopic fixed shaft at the top of the base, and a groove at the top of the base; the groove is directly below the telescopic fixed shaft, and strip grooves are formed on the bottom wall and two opposite inner walls of the groove; the three strip grooves together form a U-shaped conveyor trough; a U-shaped conveyor belt is arranged in the conveyor trough;

[0007] The machine base is provided with an unwinding mechanism and a bending guide mechanism on one side. The unwinding mechanism unwinds the strapping tape in a horizontal direction. The bending guide mechanism is located at the rear end of the unwinding mechanism along the unwinding direction and above one end of the U-shaped conveyor belt. It is used to bend the strapping tape vertically downward and feed it into the U-shaped conveyor belt.

[0008] The machine base is equipped with hot pressing heads on both sides opposite to the two ends of the U-shaped conveyor belt. The hot pressing heads are driven to extend and retract relative to each other by a telescopic mechanism.

[0009] Furthermore, based on the aforementioned scheme, the outer surface of the U-shaped conveyor belt is provided with silicone or rubber anti-slip texture.

[0010] Furthermore, based on the aforementioned scheme, the machine base has mounting cavities on both sides corresponding to the opposite sides of the conveying groove, and mounting plates are detachably installed in the mounting cavities; the unwinding mechanism, the bending guide mechanism, and the telescopic mechanism are all installed on the mounting plates.

[0011] Furthermore, based on the aforementioned scheme, the unwinding mechanism includes an unwinding wheel, two auxiliary rollers, and a first driving member. The unwinding wheel is rotatably disposed at one end of the mounting plate away from the groove. The first driving member is mounted on the mounting plate and is connected to the shaft of the unwinding wheel via a transmission connection.

[0012] The two auxiliary rollers are symmetrically rotated on the mounting plate and located behind the unwinding roller along the unwinding direction; and the two auxiliary rollers are respectively connected to two second drive components mounted on the mounting plate for clamping the conveyor strapping.

[0013] Furthermore, based on the aforementioned scheme, the bending guide mechanism includes a first guide wheel and a second guide wheel, which are vertically offset from each other on the mounting plate and are respectively horizontally corresponding to two auxiliary rollers; wherein, the first guide wheel is located below the second guide wheel and is offset behind the second guide wheel; the first guide wheel and the second guide wheel are respectively connected to two third drive components mounted on the mounting plate.

[0014] Furthermore, based on the aforementioned scheme, the diameter of the first guide wheel is larger than the diameter of the second guide wheel.

[0015] Furthermore, based on the aforementioned scheme, the bending guide mechanism also includes an arc-shaped conveyor belt; the arc-shaped conveyor belt bends downward, with one end positioned behind the first guide wheel and the other end positioned above the U-shaped conveyor belt, and has a binding gap between it and the U-shaped conveyor belt.

[0016] Furthermore, based on the aforementioned scheme, the two telescopic mechanisms are arranged opposite to each other on the two mounting plates; the hot press head is connected to the telescopic end of the telescopic mechanism and is opposite to the binding spacing.

[0017] Furthermore, based on the aforementioned scheme, the telescopic fixed shaft is laterally fixed above the groove via a base, and the base is connected to a lifting mechanism installed on the top of the base.

[0018] Furthermore, based on the aforementioned scheme, telescopic rods are respectively provided on opposite sides of the telescopic fixed shaft, and an arc-shaped support block is provided at the end of the telescopic rod.

[0019] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects:

[0020] This application provides a telescopic fixing shaft installed above the base, allowing the shaft to be threaded and fixed. A groove is formed on the top of the base, directly opposite the telescopic fixing shaft. Strip grooves are formed on the bottom wall and two opposing inner walls of the groove, together forming a U-shaped conveyor belt. This U-shaped conveyor belt is installed within the conveyor grooves, enabling the transport of the strapping tape to both sides of the annular stacked packing tape. An unwinding mechanism and a bending guide mechanism are installed on one side inside the base. The unwinding mechanism unwinds the strapping tape horizontally, while the bending guide mechanism is positioned along the unwinding direction. At the rear, the auxiliary strapping is conveyed backward and bent downward onto a U-shaped conveyor belt, which then transports it to the other side of the packing strap. Hot pressing heads are installed on both sides inside the machine base and connected to a telescopic mechanism. The telescopic mechanism drives the two heads to extend and retract relative to each other, bringing the strapping towards the inner circle of the loop packing strap. Under heat and pressure, they fuse and fix together, achieving stable strapping after cooling. An external robotic arm or a drive telescopic fixed shaft can rotate the loop packing strap to re-straighten the other side. This system automatically straps looped, stacked packing straps without manual operation, significantly improving strapping efficiency and saving time and costs. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the internal structure of the automatic PET plastic steel strapping machine according to an embodiment of the present invention;

[0023] Figure 2 This is a side view of the telescopic fixed shaft tensioning the packing strap according to an embodiment of the present invention.

[0024] Icons: 1-Base, 11-Groove, 12-Strip groove, 13-Mounting cavity, 14-Mounting plate, 2-Telescopic fixed shaft, 21-Telescopic rod, 22-Arc-shaped support block, 3-U-shaped conveyor belt, 41-Unwinding roller, 42-Auxiliary roller, 51-First guide roller, 52-Second guide roller, 53-Arc-shaped conveyor belt, 61-Hot press head, 62-Telescopic mechanism, 7-Base, 8-Lifting mechanism, 9-Packing strap. Detailed Implementation

[0025] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0026] Please refer to Figures 1-2 The image shows a schematic diagram of the overall structure of an automatic PET plastic strapping machine.

[0027] This embodiment provides an automatic PET plastic steel strapping machine, including a base 1, a telescopic fixed shaft 2 is provided on the top of the base 1, and a groove 11 is provided on the top of the base 1; the groove 11 is directly below the telescopic fixed shaft 2, and strip grooves 12 are provided on the bottom wall and the two opposite inner walls of the groove 11; the three strip grooves 12 together form a U-shaped conveyor trough; a U-shaped conveyor belt 3 is provided in the conveyor trough;

[0028] The machine base 1 has an unwinding mechanism and a bending guide mechanism on one side. The unwinding mechanism unwinds the strapping tape in the horizontal direction. The bending guide mechanism is located at the rear end of the unwinding mechanism along the unwinding direction and above one end of the U-shaped conveyor belt 3. It is used to bend the strapping tape vertically downward and feed it into the U-shaped conveyor belt 3.

[0029] Inside the base 1, on both sides opposite to the two ends of the U-shaped conveyor belt 3, there are hot pressing heads 61 respectively. The hot pressing heads 61 are driven to extend and retract relative to each other by the telescopic mechanism 62.

[0030] The following will further describe an automatic PET plastic steel strapping machine 9 according to this exemplary embodiment.

[0031] In some embodiments, a telescopic fixing shaft 2 is provided on the top of the aforementioned base 1, which is used to fix the packing strap 9 of the annular stack. A groove 11 is provided on the top of the aforementioned base 1, which is directly below the telescopic fixing shaft 2, so that part of the packing strap 9 can be located in the groove 11, which facilitates its packing. Strip grooves 12 are provided on the bottom wall of the groove 11 and on the two opposite inner walls, and the three strip grooves 12 together form a U-shaped conveying groove; a U-shaped conveyor belt 3 is provided in the conveying groove, which is used to convey and limit the strapping strap, and the U-shaped conveyor belt 3 is used to transport the strapping strap from one side of the packing strap 9 to the other side, thereby enabling the packing strap 9 to be bundled.

[0032] In a preferred embodiment, the telescopic fixed shaft 2 can be driven to extend and retract by a telescopic drive mechanism, which facilitates the strapping 9 being threaded onto the fixed shaft and also facilitates the strapping 9 being placed in the groove 11 for packaging. The telescopic drive mechanism can be an automatic telescopic mechanism 62 such as a cylinder or an electric cylinder.

[0033] As a preferred embodiment, the base 1 is provided with an unwinding mechanism and a bending guide mechanism on one side. The unwinding mechanism unwinds the strapping tape in the horizontal direction. The bending guide mechanism is located at the rear end of the unwinding mechanism along the unwinding direction and above one end of the U-shaped conveyor belt 3. It is used to bend the strapping tape vertically downward and feed it into the U-shaped conveyor belt 3. Hot pressing heads 61 are respectively provided on both sides of the base 1 that are opposite to the two ends of the U-shaped conveyor belt 3. The hot pressing heads 61 are driven to extend and retract relative to each other by the telescopic mechanism 62. That is, after the strapping is unwound and conveyed by the unwinding mechanism, the strapping is then bent downward by the bending guide mechanism and conveyed to the U-shaped conveyor belt 3. The U-shaped conveyor belt 3 then conveys it to the other side, so that the end of the strapping extends upward to a certain length on the other side. Then, the telescopic mechanism 62 drives the hot pressing head 61 to move closer and push the strapping towards the center of the ring-shaped stacked strapping 9 for hot pressing and fusion. The telescopic mechanism 62 can be a telescopic structure such as a cylinder or an electric cylinder. The hot pressing head 61 adopts the existing technology and is electrically connected to the control system through a wire.

[0034] As a preferred embodiment, the outer surface of the U-shaped conveyor belt 3 is provided with silicone or rubber anti-slip texture, which increases the friction between the strapping and the U-shaped conveyor belt 3, thereby enabling the strapping to be transported forward stably.

[0035] In a preferred embodiment, mounting cavities 13 are provided on both sides of the machine base 1 corresponding to the sides of the conveying groove. Mounting plates 14 are detachably mounted within the mounting cavities 13. The unwinding mechanism, bending guide mechanism, and telescopic mechanism 62 are all mounted on the mounting plates 14. The mounting plates 14 are used to mount these mechanisms, and their detachability within the machine base 1 facilitates disassembly, maintenance, and parts replacement. Specifically, a maintenance window can be opened on the side wall of the machine base 1, through which the mounting plates 14 can be disassembled and installed. The detachable connection can be achieved using a bolted structure.

[0036] In a preferred embodiment, the unwinding mechanism includes an unwinding wheel 41, two auxiliary rollers 42, and a first driving member. The unwinding wheel 41 is rotatably disposed at the end of the mounting plate 14 away from the groove 11. The first driving member is mounted on the mounting plate 14 and is drivenly connected to the shaft of the unwinding wheel 41. The first driving member drives the unwinding wheel 41 to rotate, unwinding the strapping band sleeved on it. The two auxiliary rollers 42 are symmetrically rotatably disposed on the mounting plate 14 and are located behind the unwinding wheel 41 along the unwinding direction. The two auxiliary rollers 42 are respectively connected to two second driving members mounted on the mounting plate 14 for clamping and conveying the strapping band. The strapping band is always clamped between the two vertically arranged auxiliary rollers 42. The second driving member drives the two auxiliary rollers 42 to rotate in opposite directions, thereby conveying the strapping band backward.

[0037] Both the first and second driving components mentioned above can be composed of motors, reducers, etc.

[0038] In a preferred embodiment, the bending guide mechanism includes a first guide wheel 51 and a second guide wheel 52. The first guide wheel 51 and the second guide wheel 52 are staggered vertically on the mounting plate 14 and are horizontally aligned with two auxiliary rollers 42, respectively. The first guide wheel 51 is located below the second guide wheel 52 and is staggered behind it. The first guide wheel 51 and the second guide wheel 52 are connected to two third drive components mounted on the mounting plate 14. When the strapping is conveyed forward between the two guide wheels, because the upper second guide wheel 52 is positioned further back, after the strapping leaves the contact area of ​​the second guide wheel 52, its upper surface will first detach from the constraint of the second guide wheel 52, while its lower surface remains supported and driven forward by the first guide wheel 51. This imbalance of forces naturally guides the strapping 9 to bend downwards. Specifically, the offset needs to be adjusted according to the material, thickness, width, required degree of bending, and conveying speed of the strapping. Too small an offset will not have a noticeable effect, while too large an offset may cause the strapping to jam, deform excessively, or increase unnecessary resistance.

[0039] In a preferred embodiment, the diameter of the first guide roller 51 is larger than the diameter of the second guide roller 52. A larger lower roller means a longer contact arc between the strapping and the lower roller in the contact area. When the strapping leaves the roller, its lower surface is driven by the lower roller for a slightly longer time than its upper surface (contact with the upper roller ends earlier). This slight difference in driving time and contact arc tends to cause the strapping to bend downwards.

[0040] In a preferred embodiment, the aforementioned bending guide mechanism further includes an arc-shaped conveyor belt 53. The arc-shaped conveyor belt 53 bends downwards, with one end positioned behind the first guide wheel 51 and the other end positioned above the U-shaped conveyor belt 3, with a binding gap between them. Specifically, a downwardly bending guide device is installed immediately following the first guide wheel 51 and the second guide wheel 52, guiding the binding strap downwards along its arc, thereby conveying the binding strap to the lower U-shaped conveyor belt 3. Combined with the first guide wheel 51 and the second guide wheel 52, the offset provides an initial downward trend, and the guide device ensures the stability of the binding strap's bending shape.

[0041] It should be noted that there is a certain binding gap between the arc-shaped conveyor belt 53 and the U-shaped conveyor belt 3. The purpose of this gap is to facilitate the hot press head 61 to push the binding tape through the gap and move it into the packing tape 9, so as to achieve a hot press connection with the other end. This gap should be set relatively small to avoid the binding tape being unable to be conveyed to the U-shaped conveyor belt 3.

[0042] Furthermore, both the aforementioned arc-shaped conveyor belt 53 and U-shaped conveyor belt 3 are driven by existing conveyor belt drive mechanisms.

[0043] In a preferred embodiment, the two telescopic mechanisms 62 are arranged opposite to each other on the two mounting plates 14; the hot pressing head 61 is connected to the telescopic end of the telescopic mechanism 62 and is opposite to the binding gap. The telescopic mechanism 62 can be a telescopic structure such as a pneumatic cylinder or an electric cylinder.

[0044] In a preferred embodiment, the telescopic fixing shaft 2 is laterally fixed above the groove 11 by a base 7, and the base 7 is connected to a lifting mechanism 8 installed on the top of the base 1. The lifting mechanism 8 can be a lifting cylinder or similar structure, which drives the base 7 to move the telescopic fixing shaft 2 up and down, and can be used to bundle packing straps 9 of different diameters.

[0045] As a preferred embodiment, telescopic rods 21 are respectively provided on opposite sides of the telescopic fixed shaft 2, and arc-shaped support blocks 22 are provided at the ends of the telescopic rods 21. By providing opposite arc-shaped support blocks 22, the inner circle of the packing strap 9 can be tensioned and fixed to prevent it from rotating and becoming unstable.

[0046] Furthermore, unless otherwise explicitly specified or limited, the terms "installation" and "connection" in this application embodiment should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "upper," "lower," "left," "right," "inner," "outer," and "side," etc., are merely for reference to the direction in the accompanying drawings or the usual placement of the product during use. They are only for clearly describing this application and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limitations on this application. The terms "first," "second," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance; "multiple" refers to at least two. In this application embodiment, the limitations on relative positional relationships such as parallel, perpendicular, and aligned are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallel, perpendicular, and aligned are all acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees.

[0047] The above are only some embodiments and implementation methods of this application. The protection scope of this application is not limited thereto. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Any combination of features in different embodiments is also within the protection scope of this application. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. An automatic PET plastic strapping machine, characterized in that, The device includes a base, a telescopic fixed shaft is provided on the top of the base, and a groove is formed on the top of the base. The groove is directly below the telescopic fixed shaft, and strip grooves are formed on the bottom wall and the two opposite inner walls of the groove. The three strip grooves together form a U-shaped conveyor trough. A U-shaped conveyor belt is provided in the conveyor trough. The machine base is provided with an unwinding mechanism and a bending guide mechanism on one side. The unwinding mechanism unwinds the strapping tape in a horizontal direction. The bending guide mechanism is located at the rear end of the unwinding mechanism along the unwinding direction and above one end of the U-shaped conveyor belt. It is used to bend the strapping tape vertically downward and feed it into the U-shaped conveyor belt. The machine base is equipped with hot pressing heads on both sides opposite to the two ends of the U-shaped conveyor belt. The hot pressing heads are driven to extend and retract relative to each other by a telescopic mechanism.

2. The automatic PET plastic strapping machine according to claim 1, characterized in that, The outer surface of the U-shaped conveyor belt is provided with silicone or rubber anti-slip texture.

3. The automatic PET plastic strapping machine according to claim 1, characterized in that, The machine base has mounting cavities on both sides corresponding to the conveying groove, and mounting plates are detachably installed in the mounting cavities; the unwinding mechanism, bending guide mechanism and telescopic mechanism are all installed on the mounting plates.

4. The automatic PET plastic steel strapping machine according to claim 3, characterized in that, The unwinding mechanism includes an unwinding wheel, two auxiliary rollers, and a first driving member. The unwinding wheel is rotatably disposed at one end of the mounting plate away from the groove. The first driving member is mounted on the mounting plate and is drivenly connected to the shaft of the unwinding wheel. The two auxiliary rollers are symmetrically rotated on the mounting plate and located behind the unwinding roller along the unwinding direction; and the two auxiliary rollers are respectively connected to two second drive components mounted on the mounting plate for clamping the conveyor strapping.

5. The automatic PET plastic steel strapping machine according to claim 4, characterized in that, The bending guide mechanism includes a first guide wheel and a second guide wheel, which are vertically offset from each other on the mounting plate and are respectively horizontally corresponding to two auxiliary rollers; wherein, the first guide wheel is located below the second guide wheel and is offset behind the second guide wheel; the first guide wheel and the second guide wheel are respectively connected to two third drive components mounted on the mounting plate.

6. The automatic PET plastic strapping machine according to claim 5, characterized in that, The diameter of the first guide wheel is larger than the diameter of the second guide wheel.

7. The automatic PET plastic strapping machine according to claim 6, characterized in that, The bending guide mechanism also includes an arc-shaped conveyor belt; the arc-shaped conveyor belt bends downward, with one end located behind the first guide wheel and the other end located above the U-shaped conveyor belt, and there is a binding gap between the arc-shaped conveyor belt and the U-shaped conveyor belt.

8. The automatic PET plastic strapping machine according to claim 7, characterized in that, The two telescopic mechanisms are arranged opposite to each other on the two mounting plates; the hot press head is connected to the telescopic end of the telescopic mechanism and is opposite to the binding spacing.

9. The automatic PET plastic strapping machine according to any one of claims 1-8, characterized in that, The telescopic fixed shaft is horizontally fixed above the groove via a base, and the base is connected to a lifting mechanism installed on the top of the base.

10. The automatic PET plastic steel strapping machine according to claim 9, characterized in that, Telescopic rods are respectively provided on opposite sides of the telescopic fixed shaft, and arc-shaped support blocks are provided at the ends of the telescopic rods.

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