Asynchronous indentation device for paper bags

Abstract

The utility model discloses a paper bag asynchronous creasing device which comprises a machine frame, a plurality of creasing units are sequentially arranged on the machine frame, and each creasing unit is connected with an independent driving device. The device has the advantages that the flexibility is high, and the distance between the indentations can be finely adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of paper bag indentation devices, in particular to an asynchronous indentation device for paper bags. Background Art

[0002] In modern paper bag production, the transmission of paper bag creasing devices plays a crucial role. This device typically consists of multiple creasing units arranged in sequence, each capable of performing creasing operations at different locations on the paper bag, thereby improving the bag's structural stability and aesthetics. However, in existing technologies, these creasing units are all driven by the same drive source, requiring their operating states to remain synchronized.

[0003] While this design simplifies the system structure to a certain extent, it also creates a series of limitations. First, due to the synchronous operation of each indentation unit, the spacing of the indentations cannot be fine-tuned. This rigid setup makes the production of paper bags with different specifications and design requirements insufficiently flexible, making it difficult to meet the diverse needs of the market. For example, when producing paper bags with complex patterns or specific shapes, traditional devices cannot achieve precise adjustment of the indentation position, affecting the overall quality of the product.

[0004] Therefore, it is necessary to further improve and perfect the existing technology to overcome these shortcomings, and the present invention is made based on this situation. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide an asynchronous creasing device for paper bags with high flexibility and fine-tunable indentation spacing. The device has independently driven creasing units, which can realize diversified folds and openings at different positions of the paper bag while ensuring operational flexibility and efficiency.

[0006] The utility model is realized through the following technical solutions:

[0007] In order to solve the above technical problems, the utility model provides an asynchronous creasing device for paper bags, comprising a frame, on which a plurality of creasing units are sequentially arranged, and each creasing unit is connected to a separate driving device.

[0008] In order to further solve the technical problem to be solved by the present invention, the present invention provides an asynchronous creasing device for paper bags, wherein the driving devices are all servo motors.

[0009] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of paper bag asynchronous indentation device, the indentation unit includes upper and lower opposite and both rotationally connected on the frame upper rotating wheel and lower rotating wheel, the upper rotating wheel is equipped with several cutters;Drive mechanism is equipped between the indentation unit and corresponding drive device, the drive mechanism includes driving wheel being equipped on drive device, and intermediate wheel being rotationally connected on the frame, first synchronous belt is equipped between the upper rotating wheel, lower rotating wheel and corresponding intermediate wheel, first tension pulley is equipped at the first synchronous belt;Second synchronous belt is equipped between the intermediate wheel and corresponding driving wheel, second tension pulley is equipped at the second synchronous belt.

[0010] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of paper bag asynchronous indentation device, adjusting screw is equipped on the first tension pulley, corresponding position is equipped with the through hole for adjusting screw to pass through on the frame, the free end of the adjusting screw is equipped with adjusting nut for adjusting the height of first tension pulley to adjust the tightness of first synchronous belt.

[0011] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of paper bag asynchronous indentation device, strip hole is equipped on the second tension pulley, fastener for being fixed on the frame in the strip hole is equipped.

[0012] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of paper bag asynchronous indentation device, the frame is further equipped with pressing and conveying belt assembly and puncture assembly located in front of all indentation units, and driving force device for driving pressing and conveying belt assembly and puncture assembly.

[0013] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of paper bag asynchronous indentation device, the pressing and conveying belt assembly includes lower conveying belt, and upper conveying belt being located above lower conveying belt and being able to press down and lift, two horizontal fixed wheels are equipped in the lower conveying belt, fixed wheel and floating wheel are equipped in the upper conveying belt, the fixed wheel is all rotationally connected on the frame, lifting drive for driving floating wheel lifting is equipped between the floating wheel and the frame.

[0014] In order to further solve the technical problems to be solved by the utility model, the utility model provides a kind of paper bag asynchronous indentation device, the lifting drive is air cylinder, one end is rotationally connected on the frame, the other end is rotationally connected on the floating wheel.

[0015] In order to further solve the technical problem to be solved by the present invention, the present invention provides an asynchronous creasing device for paper bags, wherein the puncturing assembly includes an upper roller and a lower roller that are opposite to each other and rotatably connected to a frame, and the upper roller is provided with a plurality of needles, which are detachably connected to the upper roller by threads.

[0016] In order to further solve the technical problem to be solved by the present invention, the present invention provides an asynchronous creasing device for paper bags, wherein a paper pressing rod extending from front to back into the gap between the needles is further provided in front of the upper roller.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] Each creasing unit is connected to a separate drive unit, allowing them to operate independently without interfering with each other. By fine-tuning the creasing unit's rotational speed, the spacing between different indentations can be flexibly adjusted to suit the production requirements of different paper bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention (the main power device is not shown);

[0021] Figure 2 It is a rear view of the utility model;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of multiple indentation units;

[0023] Figure 4 It is a three-dimensional structural diagram of the pressure belt assembly and the puncture assembly. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0025] like Figures 1 to 4As shown, the asynchronous creasing device for paper bags includes a frame 1 on which are sequentially arranged a number of creasing units 2. Each creasing unit 2 is capable of creating different folds or openings at different locations on the paper bag. The independence of these creasing units 2 is a major innovation of this device. Each creasing unit 2 is connected to a separate drive unit 3, allowing them to operate independently without interfering with each other. By fine-tuning the rotational speed of the creasing unit 2 (each drive unit 3 is connected to a control device that can control each drive unit 3 to operate at different speeds), the spacing between different indentations can be flexibly adjusted to meet the production requirements of different paper bags.

[0026] Furthermore, the driving devices 3 all adopt servo motors, which have the advantages of high precision and high response speed, and can effectively ensure the accuracy and consistency of the indentation.

[0027] The creasing unit 2 comprises an upper rotating wheel 21 and a lower rotating wheel 22 which are opposite to each other and rotatably connected to the frame 1. The upper rotating wheel 21 is provided with a plurality of cutters 211 which are designed to form precise indentations or openings on the paper bag.

[0028] A transmission mechanism 4 is provided between the creasing unit 2 and the corresponding drive device 3. The transmission mechanism 4 includes a driving pulley 41 mounted on the drive device 3 and an intermediate pulley 42 rotatably connected to the frame 1. A first synchronous belt 43 is provided between the upper and lower rotating pulleys 21, 22, and the corresponding intermediate pulleys 42. A second synchronous belt 45 is provided between the intermediate pulleys 42 and the corresponding driving pulleys 41.

[0029] In this structure, the purpose of designing two synchronous belts (first synchronous belt 43 and second synchronous belt 45) is to facilitate the adjustment of the drive mode of the creasing unit 2. Specifically, the intermediate wheels 42 in each creasing unit 2 are arranged in a front-to-back parallel arrangement. To synchronize the two different intermediate wheels 42, in addition to ensuring that the corresponding drive devices 3 maintain the same speed, a synchronous belt can be added between the two intermediate wheels 42 and the corresponding second synchronous belt 45 can be removed. This design makes the system more flexible and can be adjusted accordingly according to actual production needs.

[0030] A first tensioning wheel 44 is provided on the first synchronous belt 43 , and a second tensioning wheel 46 is provided on the second synchronous belt 45 . Both the first tensioning wheel 44 and the second tensioning wheel 46 are used to facilitate adjustment of the tension of the corresponding synchronous belts.

[0031] More specifically, the first tensioning pulley 44 is provided with an adjustment screw 441, and the frame 1 is provided with a through-hole for the adjustment screw 441 to pass through. The free end of the adjustment screw 441 is equipped with an adjustment nut 442 for adjusting the height of the first tensioning pulley 44, thereby adjusting the tightness of the first timing belt 43. This design facilitates quick adjustments by the operator according to different production conditions.

[0032] More specifically, a strip hole 461 is provided on the second tensioning wheel 46 , and a fastener 462 (bolt) is provided in the strip hole 461 for fixing it to the frame 1 , so as to facilitate adjustment of the position of the second tensioning wheel 46 , thereby adjusting the tightness of the second synchronous belt 45 .

[0033] In addition, the frame 1 is also provided with a pressure conveying belt assembly 5 and a puncture assembly 6 located in front of all the creasing units 2. The pressure conveying belt assembly 5 is mainly used to convey the paper bags from front to back, while the puncture assembly 6 is used to puncture ventilation holes on the paper bags to increase their breathability.

[0034] The pressure conveyor belt assembly 5 includes a lower conveyor belt 51 and an upper conveyor belt 52 positioned above the lower conveyor belt 51. The upper conveyor belt 52 can be pressed down and raised as needed. Two horizontal fixed pulleys 53 are located within the lower conveyor belt 51, while the upper conveyor belt 52 is equipped with two fixed pulleys 53 and a floating pulley 54. The fixed pulleys 53 are rotatably connected to the frame 1, while a lifting actuator 55 is located between the floating pulley 54 and the frame 1 to drive the floating pulley 54 up and down.

[0035] Furthermore, the lifting driver 55 is a cylinder with one end rotatably connected to the frame 1 and the other end rotatably connected to the floating wheel 54, which can achieve precise height adjustment to accommodate paper bags of different thicknesses.

[0036] The puncture assembly 6 comprises an upper roller 61 and a lower roller 62, which are rotatably connected to the frame 1. The upper roller 61 is equipped with several detachable needles 611 to facilitate replacement and maintenance, particularly for needles 611 of varying sizes and specifications. Preferably, the needles 611 are threadedly connected to the upper roller 61, enhancing the assembly's maintainability and flexibility.

[0037] Finally, a paper pressing rod 63 is provided in front of the upper roller 61 and extends from the front to the back into the gap between the needles 611. The function of the paper pressing rod 63 is to ensure the stability of the paper bag during the puncturing process and avoid inaccurate puncturing due to movement of the paper bag.

[0038] This utility model provides an asynchronous creasing device for paper bags. By utilizing independently driven creasing units, a flexible transmission mechanism, and efficient pressing and puncturing components, it significantly improves paper bag production efficiency and accuracy, meeting market demands for diverse paper bags. The device's flexibility and adjustability expand production possibilities, making it a significant innovation in the paper bag manufacturing industry.

Claims

1. A paper bag asynchronous creasing device, characterized by: The invention comprises a frame (1), on which a plurality of indentation units (2) are sequentially arranged, and each indentation unit (2) is connected to a separate driving device (3).

2. The asynchronous creasing device for paper bags according to claim 1, characterized in that: The driving devices (3) are all servo motors.

3. The asynchronous creasing device for paper bags according to claim 2, characterized in that: The indentation unit (2) comprises an upper rotating wheel (21) and a lower rotating wheel (22) which are opposite to each other and rotatably connected to the frame (1); the upper rotating wheel (21) is provided with a plurality of cutting tools (211); a transmission mechanism (4) is provided between the indentation unit (2) and the corresponding driving device (3); the transmission mechanism (4) comprises a driving wheel (41) provided on the driving device (3) and an intermediate wheel (42) rotatably connected to the frame; a first synchronous belt (43) is provided between the upper rotating wheel (21), the lower rotating wheel (22) and the corresponding intermediate wheel (42); a first tensioning wheel (44) is provided at the first synchronous belt (43); a second synchronous belt (45) is provided between the intermediate wheel (42) and the corresponding driving wheel (41); a second tensioning wheel (46) is provided at the second synchronous belt (45).

4. The asynchronous creasing device for paper bags according to claim 3, characterized in that: An adjusting screw (441) is provided on the first tensioning wheel (44), a through hole for the adjusting screw (441) to pass through is provided at a corresponding position on the frame (1), and an adjusting nut (442) is provided at the free end of the adjusting screw (441) for adjusting the height of the first tensioning wheel (44) and thereby adjusting the tightness of the first synchronous belt (43).

5. The asynchronous creasing device for paper bags according to claim 3, characterized in that: The second tensioning wheel (46) is provided with a strip-shaped hole (461), and a fastener (462) for fixing the second tensioning wheel to the frame (1) is provided in the strip-shaped hole (461).

6. The asynchronous creasing device for paper bags according to claim 1, characterized in that: The frame (1) is also provided with a pressing belt assembly (5) and a puncturing assembly (6) located in front of all the indentation units (2), and a main power device (7) for driving the pressing belt assembly (5) and the puncturing assembly (6).

7. The asynchronous creasing device for paper bags according to claim 6, characterized in that: The pressure conveying belt assembly (5) comprises a lower conveying belt (51) and an upper conveying belt (52) located above the lower conveying belt (51) and capable of pressing down and lifting. The lower conveying belt (51) is provided with two horizontal fixed wheels (53). The upper conveying belt (52) is provided with a fixed wheel (53) and a floating wheel (54). The fixed wheels (53) are both rotatably connected to the frame (1). A lifting driver (55) for driving the floating wheel (54) to move up and down is provided between the floating wheel (54) and the frame (1).

8. The asynchronous creasing device for paper bags according to claim 7, characterized in that: The lifting driver (55) is a cylinder with one end rotatably connected to the frame (1) and the other end rotatably connected to the floating wheel (54).

9. The asynchronous creasing device for paper bags according to claim 6, characterized in that: The puncture assembly (6) comprises an upper roller (61) and a lower roller (62) which are opposite to each other and rotatably connected to the frame (1); a plurality of puncture needles (611) are provided on the upper roller (61); and the puncture needles (611) are detachably connected to the upper roller (61) via threads.

10. The asynchronous creasing device for paper bags according to claim 9, characterized in that: A paper pressing rod (63) is also provided in front of the upper roller (61) and extends from the front to the back into the gap between the needles (611).

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