A PET strapping embossing and shaping machine

Abstract

This utility model discloses a PET strapping embossing and shaping machine, relating to the field of strapping processing. The embossing and shaping machine includes: a machine housing; an embossing structure including a lower embossing roller, an upper embossing roller, and a drive motor, with the lower and upper embossing rollers fitted together on the front side of the machine housing; and a transmission structure including an annular positioning ring, a telescopic shaft, a magnetic plate, an annular internal toothed belt, and an electromagnet. The annular positioning ring is located inside the machine housing. A first gear is fixedly sleeved on the connecting shaft between the drive motor and the lower embossing roller. The fixed end of the telescopic shaft is connected to the rotating shaft of the lower embossing roller, and the movable end of the telescopic shaft is connected to the magnetic plate, which is in clearance fit with the electromagnet. A second gear is fixedly sleeved on the telescopic shaft, the second gear meshes with a third gear, and the third gear is coaxially connected to a fourth gear, which meshes with the annular internal toothed belt. This application completely solves the problem of speed lag, ensuring aligned and continuous patterns during embossing, thus improving the embossing quality.

Description

Technical Field

[0001] This utility model relates to the field of packing strap processing technology, and more specifically, to a PET packing strap embossing and shaping machine. Background Technology

[0002] PET strapping is a plastic packaging material made from polyethylene terephthalate (PET) as the main raw material through processes such as melt extrusion and stretch molding. It has the characteristics of high strength, good toughness, and acid and alkali resistance, and is widely used for bundling goods. In order to improve the friction and appearance consistency during bundling, surface treatment is required during production.

[0003] The embossing and shaping device for PET strapping is a key piece of equipment to meet this production requirement. It consists of upper and lower embossing rollers, heating components, and transmission mechanisms. When the stretched PET strapping blank enters the device, the heating components maintain its plasticity, and the upper and lower embossing rollers emboss the pattern by rotating. At the same time, the pattern is fixed by pressure and cooling, thereby ensuring the performance and appearance of the strapping.

[0004] The device with patent number CN201821910284.8 and titled "A PET Packaging Strap Embossing and Shaping Machine" belongs to this category. It includes a machine housing, support feet, an industrial control computer, a power cord, support wheels, an upper embossing mechanism, a lower embossing roller, a shaping roller, guide wheels, a first servo motor, a partition, a second servo motor, and a temperature controller. This patent, by setting up an upper embossing mechanism, uses a rotating rod to drive the upper embossing roller, thereby adjusting the distance between the upper and lower embossing rollers to achieve on-demand adjustment of embossing force, thus ensuring consistent embossing depth and improving embossing quality. However, in this device, the upper embossing roller relies solely on friction with the lower embossing roller for transmission. This insufficient friction can lead to a lag in rotational speed, ultimately causing pattern misalignment and discontinuous embossing. Utility Model Content

[0005] The purpose of this invention is to provide a PET strapping embossing and shaping machine, which aims to solve the technical problems mentioned in the background art.

[0006] The embodiments of this utility model are implemented as follows:

[0007] This application provides a PET strapping embossing and shaping machine, comprising: a machine housing with a strapping guide structure on its front side; an embossing structure including a lower embossing roller, an upper embossing roller, and a drive motor, wherein the lower embossing roller and the upper embossing roller are configured to cooperate with each other on the front side of the machine housing and are located at the feeding end of the strapping guide structure; the drive motor is driven by the lower embossing roller; and the upper embossing roller is rotatably mounted above the lower embossing roller; and a transmission structure including an annular positioning ring, a telescopic shaft, a magnetic plate, an annular internal toothed belt, and an electromagnet, wherein the annular positioning ring is disposed inside the machine housing; the annular internal toothed belt is arranged along the circumferential direction of the inner sidewall of the annular positioning ring and is rotatably engaged with the annular positioning ring; and the drive motor is driven by the lower embossing roller and the upper embossing roller. A first gear is fixedly sleeved on the connecting shaft of the embossing roller, and the first gear meshes with the annular inner toothed belt. The fixed end of the telescopic shaft is connected to the rotating shaft of the lower embossing roller and can move up and down with the lower embossing roller. The movable end of the telescopic shaft passes through the annular inner toothed belt and is connected to the magnetic plate. The magnetic plate is in clearance fit with the electromagnet. A second gear is fixedly sleeved on the telescopic shaft. The second gear meshes with a third gear. A fourth gear is coaxially connected to the third gear. The shaft connecting the third gear and the fourth gear is rotatably fitted with the magnetic plate. The fourth gear meshes with the annular inner toothed belt. The first gear, the second gear, the third gear, and the fourth gear have the same number of teeth and pitch circle diameter.

[0008] Furthermore, based on the aforementioned scheme, a hydraulic telescopic rod is provided on the outside of the aforementioned chassis to drive the lower embossing roller to rise and fall.

[0009] Furthermore, based on the aforementioned scheme, a guide groove is provided on the front side of the aforementioned chassis, and a guide slider adapted to the aforementioned guide groove is provided on the aforementioned upper embossing roller.

[0010] Furthermore, based on the aforementioned scheme, the chassis is equipped with a power supply to power the electromagnet and the drive motor.

[0011] Furthermore, based on the aforementioned scheme, the aforementioned packing tape guiding structure includes a plurality of conveying guide rollers, any one of which is rotatably engaged with the front side of the aforementioned housing.

[0012] Furthermore, based on the aforementioned scheme, the front array of the aforementioned chassis has air supply holes, and the aforementioned air supply holes are opposite to the aforementioned packing strap material guiding structure;

[0013] The aforementioned chassis is equipped with a fan for supplying air to the aforementioned air outlets.

[0014] Furthermore, based on the aforementioned scheme, four rectangularly distributed shock-absorbing supports are provided on the bottom side of the chassis.

[0015] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects:

[0016] In practical use, the PET strapping embossing and shaping machine of this application, when adjusting the height of the upper embossing roller, generates magnetic force through the energization of the electromagnet, attracting the magnetic plate to pull the movable end of the telescopic shaft, synchronously driving the second, third, and fourth gears to move until the fourth gear misaligns with the annular inner toothed belt. At this point, the upper embossing roller can freely rise and fall. After moving to the correct position, the electromagnet is energized in the reverse direction, the magnetic plate pushes the movable end of the telescopic shaft to reset, and the fourth gear re-engages with the annular inner toothed belt. When the drive motor is working, it drives the annular inner toothed belt to rotate through the first gear, and the annular inner toothed belt then transmits power to the upper embossing roller through the fourth, third, and second gears. Because the first to fourth gears have the same number of teeth and pitch circle diameter, the upper and lower embossing rollers achieve synchronous rotation in opposite directions. The advantage of this solution is that it retains the height adjustment function of the upper embossing roller (to meet different embossing force requirements) and completely solves the problem of speed lag by replacing friction transmission with gear meshing transmission, ensuring that the pattern is aligned and continuous during embossing, thus improving the embossing quality. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a front view of a PET strapping embossing and shaping machine according to an embodiment of the present invention;

[0019] Figure 2 for Figure 1 A cross-sectional view along the AA direction;

[0020] Figure 3 for Figure 2 A magnified view of part B in the image;

[0021] Figure 4 This is a schematic diagram of the structure of the annular positioning ring in an embodiment of the present invention.

[0022] Icons: 1-Chassis, 2-Air inlet, 3-Guide roller, 4-Hydraulic telescopic rod, 5-Guide chute, 6-Guide slider, 7-Upper embossing roller, 8-Lower embossing roller, 9-Shock absorber support, 10-Annular positioning ring, 11-Annular internal toothed belt, 12-First gear, 13-Drive motor, 14-Electromagnet, 15-Fan, 16-Power supply, 17-Second gear, 18-Third gear, 19-Fourth gear, 20-Telescopic shaft, 21-Magnetic plate. Detailed Implementation

[0023] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0024] Example

[0025] Please refer to Figures 1-4 This application provides a PET strapping embossing and shaping machine, comprising: a machine housing 1, with a strapping guide structure on its front side; an embossing structure including a lower embossing roller 8, an upper embossing roller 7, and a drive motor 13, wherein the lower embossing roller and the upper embossing roller 7 are configured to cooperate on the front side of the machine housing 1 and are located at the feeding end of the strapping guide structure; the drive motor 13 is drively connected to the lower embossing roller 8; and the upper embossing roller 7 is movably positioned above the lower embossing roller 8; and a transmission structure including an annular positioning ring 10, a telescopic shaft 20, a magnetic plate 21, an annular internal toothed belt 11, and an electromagnet 14; wherein the annular positioning ring 10 is disposed inside the machine housing 1; the annular internal toothed belt 11 is arranged along the circumferential direction of the inner sidewall of the annular positioning ring 10 and is rotatably engaged with the annular positioning ring 10; and the drive motor 13 is connected to the lower embossing roller 8 via a connecting shaft. The upper fixed sleeve shaft is fitted with a first gear 12, which meshes with the annular inner toothed belt 11. The fixed end of the telescopic shaft 20 is connected to the rotating shaft of the lower embossing roller 8 and can move up and down with the lower embossing roller 8. The movable end of the telescopic shaft 20 passes through the annular inner toothed belt 11 and is connected to the magnetic plate 21. The magnetic plate 21 is clearance-fitted with the electromagnet 14. The telescopic shaft 20 is fixedly sleeved with a second gear 17, which meshes with a third gear 18. The third gear 18 is coaxially connected with a fourth gear 19, and the shaft connecting the third gear 18 and the fourth gear 19 is rotatably fitted with the magnetic plate 21. The fourth gear 19 meshes with the annular inner toothed belt 11. The first gear 12, the second gear 17, the third gear 18, and the fourth gear 19 have the same number of teeth and pitch circle diameter.

[0026] In actual use, when adjusting the height of the upper embossing roller 7, the electromagnet 14 is energized to generate magnetic force, attracting the magnetic plate 21 to pull the movable end of the telescopic shaft 20, which synchronously drives the second gear 17, the third gear 18, and the fourth gear 19 to move until the fourth gear 19 is misaligned with the annular inner toothed belt 11. At this time, the upper embossing roller 7 can move freely up and down. After moving into position, the electromagnet 14 is energized in the reverse direction, and the magnetic plate 21 pushes the movable end of the telescopic shaft 20 to reset, and the fourth gear 19 re-engages with the annular inner toothed belt 11. When the drive motor 13 is working, it drives the annular inner toothed belt 11 to rotate through the first gear 12. The annular inner toothed belt 11 then transmits power to the upper embossing roller 7 through the fourth gear 19, the third gear 18, and the second gear 17. Since the number of teeth and the pitch circle diameter of the first to fourth gears 19 are the same, the upper embossing roller 7 and the lower embossing roller 8 achieve synchronous rotation in opposite directions. The advantage of this solution is that it retains the height adjustment function of the upper embossing roller 7 (to meet different embossing force requirements), and replaces friction transmission with gear meshing transmission, which completely solves the problem of speed lag, ensures that the patterns are aligned and continuous during embossing, and improves the embossing quality.

[0027] As a preferred embodiment, the outer side of the aforementioned housing 1 is provided with a hydraulic telescopic rod 4 that drives the lower embossing roller 8 to rise and fall.

[0028] In the above embodiment, the lower embossing roller 8 is raised and lowered by the hydraulic telescopic rod 4, which can more stably and accurately adjust the position of the lower embossing roller 8, thereby cooperating with the upper embossing roller 7 to achieve fine control of the embossing force and improve adjustment efficiency and stability.

[0029] In a preferred embodiment, the front side of the aforementioned housing 1 is provided with a guide groove 5, and the aforementioned upper embossing roller 7 is provided with a guide slider 6 adapted to the aforementioned guide groove 5.

[0030] In the above embodiment, with the cooperation of the guide groove 5 and the guide slider 6, the upper embossing roller 7 can move along a fixed trajectory when it is raised and lowered, avoiding deviation, ensuring its alignment accuracy with the lower embossing roller 8, and ensuring embossing stability.

[0031] In a preferred embodiment, the chassis 1 is provided with a power supply 16 for supplying power to the electromagnet 14 and the drive motor 13.

[0032] In the above embodiment, the internal power supply 16 of the chassis 1 provides power to the electromagnet 14 and the drive motor 13, which can reduce the need for external power line connections and avoid problems such as messy equipment layout, wire wear, and poor contact caused by messy external wiring. At the same time, the internal power supply can realize centralized control of power output, ensuring that suitable and stable power is provided to the electromagnet 14 (which requires precise control of on / off and current direction) and the drive motor 13 (which requires stable power output), reducing the impact of voltage fluctuations on the operating accuracy of the equipment and improving the overall reliability and safety of the equipment.

[0033] In a preferred embodiment, the above-mentioned packing strap guiding structure includes a plurality of guide rollers 3 that are engaged in conveying, and any of the above-mentioned guide rollers 3 is rotatably engaged with the front side of the above-mentioned housing 1.

[0034] In the above embodiments, multiple guide rollers 3 can provide continuous support and guidance for the PET packing strip blank from different positions, preventing the blank from shifting, wrinkling or sagging during the conveying process, and ensuring that the blank enters the subsequent embossing structure in a stable posture.

[0035] In a preferred embodiment, the front side of the aforementioned chassis 1 is arrayed with air supply holes 2, and the air supply holes 2 are opposite to the aforementioned packing strap material guiding structure.

[0036] The aforementioned chassis 1 is equipped with a fan 15 for supplying air to the aforementioned air outlet 2.

[0037] In the above embodiments, the heating structure inside the lower embossing roller 8 can provide a suitable temperature for embossing PET strapping, ensuring that the strapping has good plasticity during embossing and facilitating pattern embossing. Meanwhile, the air supply hole 2 on the front side of the machine box 1, which is opposite to the strapping material guide structure, supplies air under the action of the fan 15, which can directly act on the embossed strapping. The embossed strapping still retains a certain amount of heat, and the continuous airflow can accelerate the dissipation of heat from the surface and interior of the strapping, so that the embossed pattern can be solidified and set in a short time. This avoids the deformation or blurring of the pattern during the movement of the strapping due to slow setting, thereby ensuring the smoothness of the embossing operation, improving the efficiency and effect of pattern setting, and ensuring the appearance quality and friction stability of the strapping during use.

[0038] As a preferred embodiment, the bottom side of the aforementioned chassis 1 is provided with four rectangularly distributed shock-absorbing supports 9.

[0039] In the above embodiment, the four rectangular shock-absorbing supports 9 on the bottom side of the chassis 1 can effectively buffer the vibration generated during the operation of the equipment, prevent the vibration from being transmitted to the embossing structure and the material guiding structure, and avoid affecting the material conveying and embossing accuracy, thus ensuring the stable operation of the equipment.

[0040] 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.

[0041] 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. A PET bale band embosser, characterized by, include: The chassis (1) has a packing strap guide structure on its front side; The embossing structure includes a lower embossing roller (8), an upper embossing roller (7), and a drive motor (13). The lower embossing roller (8) and the upper embossing roller (7) are fitted together on the front side of the machine box (1) and are located at the feeding end of the packing strap guide structure. The drive motor (13) is connected to the lower embossing roller (8) for transmission. The upper embossing roller (7) can be raised and lowered above the lower embossing roller (8). as well as The transmission structure includes an annular positioning ring (10), a telescopic shaft (20), a magnetic plate (21), an annular inner toothed belt (11), and an electromagnet (14). The annular positioning ring (10) is located inside the housing (1). The annular inner toothed belt (11) is arranged along the circumferential direction of the inner sidewall of the annular positioning ring (10) and is rotatably engaged with the annular positioning ring (10). The drive motor (13) is fixedly connected to the shaft of the lower embossing roller (8) with a first gear (12), and the first gear (12) meshes with the annular inner toothed belt (11). The fixed end of the telescopic shaft (20) is connected to the rotating shaft of the lower embossing roller (8) and can follow the lower embossing roller (8) up and down. The movable end of the telescopic shaft (20) passes through the annular inner toothed belt (11) and is connected to the magnetic plate (21). The magnetic plate (21) is in clearance engagement with the electromagnet (14). The telescopic shaft (20) is fixedly sleeved with a second gear (17), the second gear (17) meshes with a third gear (18), the third gear (18) is coaxially connected with a fourth gear (19), and the shaft connecting the third gear (18) and the fourth gear (19) is rotatably engaged with the magnetic plate (21). The fourth gear (19) meshes with the annular inner toothed belt (11). The first gear (12), the second gear (17), the third gear (18) and the fourth gear (19) have the same number of teeth and pitch circle diameter.

2. The embossing setting machine for PET packing belt according to claim 1, characterized in that, The outer side of the housing (1) is provided with a hydraulic telescopic rod (4) that drives the lower embossing roller (8) to rise and fall.

3. The PET packing belt embossing setting machine according to claim 2, characterized in that, The front side of the housing (1) is provided with a guide groove (5), and the upper embossing roller (7) is provided with a guide slider (6) adapted to the guide groove (5).

4. The embossing setting machine for PET packing belt according to claim 1, characterized in that, The chassis (1) is equipped with a power supply (16) for supplying power to the electromagnet (14) and the drive motor (13).

5. The embossing setting machine for PET packing belt according to claim 1, characterized in that, The packing strap guiding structure includes multiple guide rollers (3) that are in contact with the conveyor, and any one of the guide rollers (3) is rotatably engaged with the front side of the housing (1).

6. The embossing setting machine for PET packing belt according to claim 1, characterized in that, The front side of the chassis (1) has air vents (2), and the air vents (2) are opposite to the packing strap material guiding structure; The casing (1) is equipped with a fan (15) for supplying air to the air outlet (2).

7. The embossing setting machine for PET packing belt according to claim 1, characterized in that, The bottom side of the chassis (1) is provided with four rectangular shock-absorbing supports (9).

Images