Automatic flanging machine for square bottom

Abstract

The invention belongs to the technical field of edge folding machine equipment, and particularly relates to a square bottom automatic edge folding machine which comprises a rack, and the top of the rack is provided with a bag conveying table, a bag feeding device, a magnetic conveying device, a steel belt conveying device, a sealing device, a bag opening device, a socket device and an automatic edge folding device. The bag feeding device achieves the action of automatic conveying after double-layer plastic bags are placed. The magnetic conveying device and the steel belt conveying device achieve the top and bottom mutual extrusion conveying action of the double-layer plastic bag at the same time. According to the automatic edge folding machine for the square bottom, the defects of manual edge folding in the past are overcome, and manual work is replaced to achieve high-speed production by means of the working mode of conveying through the magnetic conveying chain and automatic edge folding of the square bottom through equipment; all procedures can be completed only by replacing manual work with actions such as automatic conveying, automatic sealing, automatic bag opening, automatic inserting, automatic edge folding and the like. Therefore, the automatic square bottom edge folding of the plastic packaging bag is realized; the labor cost is reduced by more than 70%, and the production efficiency is improved by nearly 10 times.

Description

Technical Field

[0001] The present invention relates to the technical field of hemming machines, and particularly to a square-bottom automatic hemming machine. Background Art

[0002] For square-bottom bags, high molecular polymers (or synthetic resins) are the main components of plastics. To improve the properties of plastics, various auxiliary materials need to be added to the polymer to meet various requirements of people for plastics, such as fillers, plasticizers, lubricants, stabilizers, colorants, etc., in order to become plastics with good properties. Square-bottom bags are generally made of synthetic resin as the main material, named after their square bottom, and when unfolded, they are like a cardboard box, with different lengths, widths, and heights, and are "custom-made" according to the sizes of the products to be packaged.

[0003] In the actual production of conventional square-bottom plastic packaging bags, manual hemming is used, which cannot achieve automation, and thus has the following deficiencies: low production efficiency, large dimensional errors in the produced products, low dimensional accuracy of the hemming, and high labor costs. Therefore, a square-bottom automatic hemming machine is needed. Summary of the Invention

[0004] Based on the existing technical problems, the present invention proposes a square-bottom automatic hemming machine.

[0005] A square-bottom automatic hemming machine proposed by the present invention includes a frame, and a bag feeding table, a bag feeding device, a magnetic conveying device, a steel belt conveying device, a sealing device, a bag opening device, a bag inserting device, and an automatic hemming device are respectively arranged on the top of the frame.

[0006] The bag feeding device realizes the action of automatically conveying the double-layer plastic bags after they are placed.

[0007] The magnetic conveying device and the steel belt conveying device simultaneously realize the action of squeezing and conveying the double-layer plastic bags at the top and bottom.

[0008] The sealing device realizes the action of sealing the conveyed double-layer plastic bags.

[0009] The bag opening device realizes the action of opening one end of the double-layer plastic bags after sealing.

[0010] The bag inserting device realizes the action of completely opening the bag mouth of the opened double-layer plastic bags.

[0011] The automatic hemming device realizes the action of automatically hemming the square bottom of the double-layer plastic bags with the bag mouth completely opened.

[0012] Preferably, the bag feeding table is installed on the right surface of the frame, the double-layer plastic bags are initially placed on the top of the bag feeding table and are stacked and balanced, and one end of the double-layer plastic bags extends into the bag feeding device.

[0013] Preferably, the bag feeding device is installed on the left side of the bag feeding table and on the right side of the magnetic conveying device and the steel belt conveying device. The magnetic conveying device is installed on the top of the frame, and the magnetic conveying device includes a magnetic conveying chain. The magnetic conveying chain is arranged horizontally in a loop and is driven by a driving source to drive the sprocket to drive the magnetic conveying chain to transmit.

[0014] Preferably, the steel belt conveying device is installed on the top of the magnetic conveying device, and the steel belt conveying device includes a conveying steel belt. The conveying steel belt is driven by a driving source to drive a plurality of steel belt wheels to transmit. And the top of the magnetic conveying chain is arranged in parallel with the corresponding bottom of the conveying steel belt. The double-layer plastic bag is squeezed by the conveying steel belt at the top and the magnetic conveying chain at the bottom, and is driven to transmit and move while being conveyed.

[0015] Preferably, both the sealing device and the bag opening device are arranged at the bottom of the steel belt conveying device and the top of the magnetic conveying device, and both the sealing device and the bag opening device are evenly arranged at equal intervals in the length direction of the magnetic conveying device. Both the sealing device and the bag opening device are installed on the surface of the frame through connecting rods, and the sealing device is located on the right side of the bag opening device.

[0016] Preferably, the socket device is installed at the bottom of the bag opening device, and the socket device controls the bag opening device to perform the action of completely opening one end of the double-layer plastic bag after it is opened.

[0017] Preferably, two sets of the steel belt conveying devices are provided, and the two sets are arranged adjacent to each other on the left and right. The automatic hemming device is located at the bottom of the steel belt conveying device and the top of the magnetic conveying device. The automatic hemming device is fixedly installed on the surface of the frame through a connecting support rod.

[0018] Preferably, the completely opened double-layer plastic bag is moved in parallel by the magnetic conveying chain and the conveying steel belt, conveyed into the automatic hemming device for automatic bottom hemming operation, and finally conveyed to the next process by the magnetic conveying chain and the conveying steel belt for parallel movement.

[0019] The beneficial effects of the present invention are as follows:

[0020] The present invention solves the disadvantages of the previous manual hemming, uses the magnetic conveying chain for conveying, and the working mode of automatic bottom hemming of the equipment to replace manual labor for high-speed production; through automatic conveying, automatic sealing, automatic bag opening, automatic socketing, automatic hemming and other actions to replace manual labor to complete all processes. Thus, the automatic bottom hemming of the plastic packaging bag is realized; the labor cost is reduced by more than 70%, and the production efficiency is increased by nearly 10 times. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of a square-bottom automatic edge folding machine;

[0022] Figure 2 It is the front view of the automatic edge folding device of a square-bottom automatic edge folding machine;

[0023] Figure 3 It is the front view of the frame structure of a square-bottom automatic edge folding machine;

[0024] Figure 4 It is of a square-bottom automatic edge folding machine Figure 3 The enlarged view at position A in it.

[0025] In the figure: 1. Frame; 2. Bag feeding table; 3. Bag feeding device; 4. Magnetic conveying device; 41. Magnetic conveying chain; 5. Steel belt conveying device; 51. Conveying steel belt; 6. Sealing device; 7. Bag opening device; 8. Socket device; 9. Automatic edge folding device. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0027] Referring to Figures 1 - 4 , a square-bottom automatic edge folding machine includes a frame 1. A bag feeding table 2, a bag feeding device 3, a magnetic conveying device 4, a steel belt conveying device 5, a sealing device 6, a bag opening device 7, a socket device 8, and an automatic edge folding device 9 are respectively arranged on the top of the frame 1; the bag feeding table 2 is installed on the right surface of the frame 1. The double-layer plastic bags are initially placed on the top of the bag feeding table 2 and are stacked and balanced, and one end of the double-layer plastic bags extends into the bag feeding device 3.

[0028] Specifically implemented in this way, by setting the bag feeding table 2, the double-layer plastic bags can be quickly fed into the bag feeding device 3, improving production efficiency; after setting the bag feeding table 2, the entire packaging process can be automated, reducing manual intervention and avoiding errors and unstable factors caused by human reasons; by the way of stacking and balancing, the double-layer plastic bags can be kept balanced on the bag feeding table 2, avoiding situations such as tilting or falling during transportation; since one end of the double-layer plastic bags has extended into the bag feeding device 3, the operator only needs to press the start button to directly perform automated packaging operations, saving time and labor costs.

[0029] In order to realize the automatic conveying action after placing double-layer plastic bags; an inlet bag device 3 is arranged on the left side of the bag feeding table 2 and on the right side of the magnetic conveying device 4 and the steel belt conveying device 5. The magnetic conveying device 4 is installed on the top of the frame 1, and the magnetic conveying device 4 includes a magnetic conveying chain 41. The magnetic conveying chain 41 is arranged in a horizontal loop and is driven by a driving source to drive the magnetic conveying chain 41 to transmit.

[0030] Specifically implemented in this way, by setting the inlet bag device 3 and the magnetic conveying device 4, the automatic conveying process of double-layer plastic bags can be realized. As an efficient conveying method, the magnetic conveying chain 41 can stably convey the plastic bags from the bag feeding table 2 to the inlet bag device 3, reducing the need for manual operation; the magnetic conveying chain 41 is arranged in a horizontal loop and is transmitted by means of sprocket drive, which can ensure that the double-layer plastic bags are stable and error-free during the conveying process, avoiding problems such as loose packaging or deformation caused by shaking or jitter; the magnetic conveying chain 41 has strong tensile strength and wear resistance, and can continuously and stably convey plastic bags. At the same time, the drive of the driving source and the sprocket drive method also ensure the reliability and stability of the conveying.

[0031] The magnetic conveying device 4 and the steel belt conveying device 5 simultaneously realize the action of squeezing and conveying the double-layer plastic bags from the top and bottom; the steel belt conveying device 5 is installed on the top of the magnetic conveying device 4, and the steel belt conveying device 5 includes a conveying steel belt 51. The conveying steel belt 51 is driven by a driving source to drive multiple steel belt wheels to transmit, and the top of the magnetic conveying chain 41 is arranged parallel to the corresponding bottom of the conveying steel belt 51. The double-layer plastic bags are squeezed by the conveying steel belt 51 at the top and the magnetic conveying chain 41 at the bottom, and the double-layer plastic bags are driven to transmit and move during the conveying.

[0032] Specifically implemented in this way, by squeezing each other between the conveying steel belt 51 at the top and the magnetic conveying chain 41 at the bottom, the double-layer plastic bags can be kept stable during the conveying process, avoiding the shaking and swaying of the plastic bags and improving the stability of the conveying; through the squeezing action of the conveying steel belt 51 at the top and the magnetic conveying chain 41 at the bottom of the double-layer plastic bags, the packaged goods can be effectively compressed to make them more compact and reduce the volume and space occupied by the packaging; through the squeezing action at the top and the bottom, it can be ensured that the packaged goods in the double-layer plastic bags will not loosen or deform during the conveying process, improving the quality and aesthetics of the packaging; at the same time, using the magnetic conveying device 4 and the steel belt conveying device 5 can adapt to double-layer plastic bags of different shapes and sizes, providing a wider range of applications; both the magnetic conveying chain 41 and the conveying steel belt 51 have high wear resistance and durability, which can reduce the frequency of maintenance and replacement and lower the maintenance cost of the equipment.

[0033] To achieve the operation of sealing the double-layer plastic bags during transportation; and to achieve the operation of opening one end of the double-layer plastic bags after sealing; a sealing device 6 and a bag-opening device 7 are both arranged at the bottom of the steel belt conveying device 5 and the top of the magnetic conveying device 4, and the sealing device 6 and the bag-opening device 7 are evenly arranged at equal intervals along the length direction of the magnetic conveying device 4. The sealing device 6 and the bag-opening device 7 are both installed on the surface of the frame 1 through connecting rods, and the sealing device 6 is located on the right side of the bag-opening device 7.

[0034] Specifically implemented in this way, the sealing and bag-opening operations of the double-layer plastic bags can be achieved, ensuring the safety and integrity of the packaged goods. It can also improve the operation efficiency, reduce the risk of damage to the packaged goods, and facilitate maintenance and repair.

[0035] To achieve the operation of completely opening the mouth of the open double-layer plastic bag; a socket device 8 is installed at the bottom of the bag-opening device 7, and the socket device 8 controls the bag-opening device 7 to completely open the mouth after one end of the double-layer plastic seal is opened.

[0036] Specifically implemented in this way, the socket device 8 controls the bag-opening device 7 to be able to completely open the bag mouth after one end of the double-layer plastic bag is sealed and opened. This ensures the easy access and convenience of the packaged goods, enabling users to more easily take out or put in items; through the control of the socket device 8, the mouth of the double-layer plastic bag can be quickly and accurately completely opened without additional manual operations. This can improve the efficiency of the packaging process, saving time and labor costs.

[0037] To achieve the operation of automatically folding the square bottom of the double-layer plastic bag with the mouth completely opened; two groups of steel belt conveying devices 5 are provided, and the two groups are arranged adjacent to each other on the left and right. The automatic folding device 9 is located at the bottom of the steel belt conveying device 5 and the top of the magnetic conveying device 4, and the automatic folding device 9 is fixedly installed on the surface of the frame 1 through connecting support rods.

[0038] Specifically implemented in this way, through the design of the automatic folding device 9, the operation of automatically folding the square bottom of the bag mouth can be achieved. Without manual intervention, it reduces labor costs and the complexity of operations, and improves production efficiency; the automatic folding device 9 can precisely control the folding action of the bag mouth, making the bag mouth neat and flat, avoiding the situation of the bag mouth being loose or wrinkled. This can keep the appearance of the packaged goods beautiful and tidy; improve operation efficiency, maintain packaging quality, and optimize space utilization.

[0039] The completely opened double-layer plastic bag moves parallel through the magnetic conveying chain 41 and the conveying steel belt 51, is transported to the inside of the automatic folding device 9 for the operation of automatically folding the square bottom, and finally is transported to the next process through the parallel movement of the magnetic conveying chain 41 and the conveying steel belt 51.

[0040] Specifically, it is implemented in this way. Through the parallel movement of the magnetic conveying chain 41 and the conveying steel belt 51, the plastic bag is smoothly conveyed into the automatic hemming device 9 for hemming operation. This can achieve the automation of the whole process, reduce manual intervention and improve production efficiency. The bag with completed hemming is again moved in parallel through the magnetic conveying chain 41 and the conveying steel belt 51, and can be smoothly conveyed to the next process for subsequent operations. This can save time, improve work efficiency and make the operation of the production line more smooth. Through the operation of the automatic hemming device 9, the bag mouth can be neatly and flatly folded, avoiding the situation that the bag is loose or wrinkled. This can keep the appearance of the package beautiful and clean and enhance the product image.

[0041] The present invention solves the drawbacks of the previous manual hemming. By using the magnetic conveying chain 41 for conveying and the automatic bottom hemming working mode of the equipment, it replaces manual labor to achieve high-speed production. Through automatic conveying, automatic sealing, automatic bag opening, automatic socket insertion, automatic hemming and other actions, it replaces manual labor to complete all processes. Thus, the automatic bottom hemming of plastic packaging bags is realized; the labor cost is reduced by more than 70%, and the production efficiency is increased by nearly 10 times.

[0042] Working principle: Place a double-layer plastic packaging bag on the bag feeding table 2. Convey the double-layer plastic packaging bag into the magnetic conveying chain 41 and the conveying steel belt 51 through the bag feeding device 3. Through the parallel movement of the magnetic conveying chain 41 and the conveying steel belt 51, convey the plastic packaging bag into the sealing device 6 for heat sealing and bonding. The reverse dimension of the length of the sealing device 6 is that the forward distance is the bag length, and an in-bag detection sensor and a sealing and bag-opening dynamic sensor are respectively arranged at both ends of the forward distance of the bag length. Then, through the parallel movement of the magnetic conveying chain 41 and the conveying steel belt 51, convey the plastic packaging bag into the bag-opening device 7. The length of the bag-opening device 7 is that the forward distance is the bag length. The bag-opening device 7 opens the bag mouth of the double-layer plastic packaging bag, and at the same time, the socket insertion device 8 acts to completely open the double-layer plastic packaging bag with the opened bag mouth. Then, through the parallel movement of the magnetic conveying chain 41 and the conveying steel belt 51, convey the plastic packaging bag into the automatic hemming device 9 for automatic bottom hemming. Finally, convey the finished plastic packaging bag with the folded bottom to the next process through the parallel movement of the magnetic conveying chain 41 and the conveying steel belt 51.

[0043] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacement or change, and should be covered by the protection scope of the present invention.

Claims

1. An automatic square-bottom flanging machine, comprising a frame (1), characterized in that: At the top of the frame (1), a bag feeding table (2), a bag feeding device (3), a magnetic conveying device (4), a steel belt conveying device (5), a sealing device (6), a bag opening device (7), a socket device (8) and an automatic hemming device (9) are respectively arranged; The bag feeding device (3) realizes the action of automatically conveying after placing double-layer plastic bags; The magnetic conveying device (4) and the steel belt conveying device (5) simultaneously realize the action of squeezing and conveying the double-layer plastic bags at the top and bottom; The sealing device (6) realizes the action of sealing the conveyed double-layer plastic bags; The bag opening device (7) realizes the action of opening one end of the double-layer plastic bags after sealing; The socket device (8) realizes the action of completely opening the bag mouth of the opened double-layer plastic bags; The automatic hemming device (9) realizes the action of automatically folding the bottom of the double-layer plastic bags with the bag mouth completely opened; 2. The automatic square-bottom hemming machine according to claim 1, wherein: The bag feeding table (2) is installed on the right surface of the frame (1). The double-layer plastic bags are initially placed on the top of the bag feeding table (2) and are stacked and balanced, and one end of the double-layer plastic bags extends into the bag feeding device (3); 3. The automatic square-bottom hemming machine according to claim 1, wherein: The bag feeding device (3) is installed on the left side of the bag feeding table (2) and is located on the right side of the magnetic conveying device (4) and the steel belt conveying device (5). The magnetic conveying device (4) is installed on the top of the frame (1), and the magnetic conveying device (4) includes a magnetic conveying chain (41). The magnetic conveying chain (41) is arranged horizontally in a ring shape, and the sprocket is driven by a driving source to drive the magnetic conveying chain (41) to transmit; 4. The bottom automatic hemming machine according to claim 1, characterized in that: The steel belt conveying device (5) is installed on the top of the magnetic conveying device (4), and the steel belt conveying device (5) includes a conveying steel belt (51). The conveying steel belt (51) is driven by a driving source to drive a plurality of steel belt wheels to move, and the top of the magnetic conveying chain (41) is parallel to the corresponding bottom of the conveying steel belt (51). The double-layer plastic bags are squeezed by the conveying steel belt (51) at the top and the magnetic conveying chain (41) at the bottom, and are driven to move during conveying; 5. The automatic square-bottom hemming machine according to claim 1, wherein: The sealing device (6) and the bag opening device (7) are both arranged at the bottom of the steel belt conveying device (5) and the top of the magnetic conveying device (4), and the sealing device (6) and the bag opening device (7) are evenly arranged at equal intervals in the length direction of the magnetic conveying device (4). The sealing device (6) and the bag opening device (7) are both installed on the surface of the frame (1) through connecting rods, and the sealing device (6) is located on the right side of the bag opening device (7); 6. The automatic square-bottom hemming machine according to claim 1, characterized in that: The socket device (8) is installed at the bottom of the bag opening device (7), and the socket device (8) controls the bag opening device (7) to completely open the opened end of the double-layer plastic bags after sealing; 7. The automatic square-bottom hemming machine according to claim 1, characterized in that: Two sets of the steel belt conveying devices (5) are provided, and the two sets are arranged adjacent to each other left and right. The automatic edge folding device (9) is located at the bottom of the steel belt conveying device (5) and the top of the magnetic conveying device (4). The automatic edge folding device (9) is fixedly installed on the surface of the frame (1) through a connecting support rod.

8. The automatic square-bottom hemming machine according to claim 1, characterized in that: The fully opened double-layer plastic bag is parallelly moved through the magnetic conveying chain (41) and the conveying steel belt (51), and is conveyed into the automatic edge folding device (9) for automatic square bottom edge folding operation, and finally is parallelly moved and conveyed to the next process through the magnetic conveying chain (41) and the conveying steel belt (51).

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