A bag cutting device for ton bags

Abstract

The present invention discloses a bag cutting device for ton bags, comprising: a frame, a discharging guiding cylinder, a vacuum adsorber, a bag cutting knife, a bag cutting driving mechanism, a positive pressure puncturing needle, and a positive pressure air source. The discharging guiding cylinder is arranged on the frame; the discharging guiding cylinder has a material discharging inner hole; the discharging guiding cylinder is provided with a plurality of vacuum adsorption holes, and the plurality of vacuum adsorption holes are circumferentially and spacedly distributed around the periphery of the material discharging inner hole. The vacuum adsorber is communicated with the plurality of vacuum adsorption holes, and the vacuum adsorber is used for sucking the ton bag tightly directly above the discharging guiding cylinder. The bag cutting knife is movably arranged in the discharging guiding cylinder. The bag cutting driving mechanism is drivingly connected to the bag cutting knife and can drive the bag cutting knife to cut out a discharging bag opening at the bottom of the ton bag. The positive pressure puncturing needle can approach and move away from the ton bag placed on the discharging guiding cylinder to puncture or move away from the ton bag. The positive pressure air source is connected to the positive pressure puncturing needle. And it can perform bag cutting on a part of the bottom of the ton bag to generate a discharging bag opening, and take into account the requirements of thorough and efficient discharging of the ton bag.

Description

Technical Field

[0001] The present invention relates to the technical field of ton bag handling devices, and in particular, to a bag cutting device for ton bags. Background Art

[0002] Ton bags, also known as ton sacks, space bags, and small flexible containers, are flexible packaging containers. The specifications of ton bags are different from ordinary woven bags. They not only have a large loading capacity, but also have the advantages of moisture-proof, dust-proof, radiation-proof, and safe and reliable transportation after loading materials, which brings great convenience to the transportation of materials for current production enterprises and is widely used in various fields.

[0003] Based on the need to clean ton bags before bag cutting, compared with the prior art, only a partial area at the bottom of the ton bag is cleaned in this workshop, thus saving the cleaning area and workload of the ton bag and improving production efficiency. However, this also makes it inappropriate for the ton bag to shake left and right during the bag cutting process, otherwise impurities (possibly dust, iron filings, etc.) on the uncleaned part of the ton bag will fall onto the equipment and then mix into the materials during unloading; that is to say, based on this, during the bag cutting process, it is necessary to ensure the stability of the ton bag, and at the same time, the requirements for thorough and efficient unloading of the ton bag should also be taken into account. In this way, it poses a challenge to the existing ton bag cutting devices, and it is urgent to solve this technical problem. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a bag cutting device for ton bags, which can stably fix the ton bag, can cut a partial area at the bottom of the ton bag to generate a discharge bag opening, and takes into account the requirements for thorough and efficient unloading of the ton bag.

[0005] The purpose of the present invention is achieved by the following technical solutions:

[0006] A bag cutting device for ton bags, comprising:

[0007] A frame;

[0008] A discharge guiding cylinder, provided on the frame; the discharge guiding cylinder has a material discharging inner hole; the discharge guiding cylinder is provided with a plurality of vacuum adsorption holes, and the plurality of vacuum adsorption holes are circumferentially and spaced apart around the inner hole of the material discharging;

[0009] A vacuum adsorber, communicated with the plurality of vacuum adsorption holes, and the vacuum adsorber is used to suck the ton bag tightly directly above the discharge guiding cylinder;

[0010] A bag cutting knife, movably provided in the discharge guiding cylinder;

[0011] A bag cutting driving mechanism, drivingly connected to the bag cutting knife, and capable of driving the bag cutting knife to cut a discharge bag opening at the bottom of the ton bag;

[0012] A positive-pressure puncturing needle that can approach and move away from the ton bag placed on the discharge guiding cylinder to puncture or move away from the ton bag;

[0013] A positive-pressure air source, connected to the positive-pressure puncturing needle.

[0014] Furthermore, there are multiple positive-pressure puncturing needles, and the multiple positive-pressure puncturing needles are located above the discharge guiding cylinder and are arranged at intervals around the circumference of the discharge guiding cylinder. Each positive-pressure puncturing needle is driven by a linear driving mechanism.

[0015] Furthermore, the bag cutting device for ton bags further includes multiple needle seats, and each positive-pressure puncturing needle is respectively movably inserted into the needle hole of one of the needle seats; when the positive-pressure puncturing needle is in a non-working state, the positive-pressure puncturing needle retracts into its corresponding needle hole.

[0016] Furthermore, the positive-pressure puncturing needle is placed horizontally.

[0017] Furthermore, the frame is connected with a lifting and vibrating mechanism, and the lifting and vibrating mechanism is drivingly connected with a lifting and vibrating disk. The multiple needle seats and the multiple linear driving mechanisms are all supported by the lifting and vibrating disk.

[0018] Furthermore, the lifting and vibrating mechanism includes an electromagnet arranged on the frame, a magnetic attracting member arranged on the lifting and vibrating disk and used for attracting and combining with the electromagnet, and an elastic member arranged on the frame and used for driving the electromagnet and the magnetic attracting member to move away from each other.

[0019] Furthermore, the bag cutting knife is installed in the discharge guiding cylinder through a rotary frame, and the rotary axis of the rotary frame is coaxial with the axis of the discharge guiding cylinder; the bag cutting driving mechanism is drivingly connected with the rotary frame.

[0020] Furthermore, the rotary frame is a toothed disk; the bag cutting driving mechanism is a motor, and the motor is connected with the toothed disk through an intermediate gear.

[0021] Furthermore, the top end of the bag cutting knife extends above the discharge guiding cylinder.

[0022] Furthermore, a plurality of rubber rings are arranged at the top of the discharge guiding cylinder, and the plurality of rubber rings are arranged around the periphery of the discharge guiding cylinder and are used for supporting the ton bag.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. By arranging a plurality of vacuum adsorption holes around the material discharge inner hole of the discharge guiding cylinder, the ton bag can be tightly adsorbed, which is conducive to the bag cutting driving mechanism to drive the bag cutting knife to cut the bottom of the ton bag, so as to stably generate a discharge bag mouth; this bag cutting method makes the positions of the discharge bag mouths generated by each ton bag the same, so it is not easy to make mistakes.

[0025] 2. Based on the fact that the ton bag is tightly adsorbed by the vacuum adsorption holes, a positive pressure puncture needle is allowed to puncture the ton bag, and under the high-pressure blowing of the positive pressure air source, the ton bag will not shift, so as to improve the discharge efficiency of the ton bag, and the discharge process is relatively stable.

[0026] 3. Moreover, based on the fact that the last remaining material in the ton bag can be drained by the air flow, the material in the ton bag can be discharged more thoroughly. Brief Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of a bag cutting device for ton bags according to the present invention;

[0028] Figure 2 is Figure 1 a partial enlarged view of part A of

[0029] Figure 3 is Figure 1 a top view of

[0030] In the figure: 10, frame; 20, discharge guiding cylinder; 21, material discharge inner hole; 22, vacuum adsorption hole; 30, vacuum adsorber; 40, bag cutting knife; 50, bag cutting driving mechanism; 60, positive pressure puncture needle; 70, linear driving mechanism; 80, puncture needle seat; 801, puncture needle hole; 90, lifting and vibrating mechanism; 901, electromagnet; 902, magnetic attraction part; 903, elastic part; 100, lifting and vibrating plate; 110, rubber ring; 120, rotary frame; 130, intermediate gear. Detailed Embodiments

[0031] Next, in combination with the drawings and specific embodiments, the present invention will be further described. It should be noted that on the premise of no conflict, the following-described embodiments or technical features can be combined arbitrarily to form new embodiments.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element. The "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the invention herein are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0034] Figures 1 - 3 A bag cutting device for a ton bag according to a preferred embodiment of the present invention is shown, including: a frame 10, a discharge guiding cylinder 20, a vacuum adsorber 30, a bag cutting knife 40, a bag cutting driving mechanism 50, a positive pressure puncture needle 60, and a positive pressure air source.

[0035] The discharge guiding cylinder 20 is arranged on the frame 10. The discharge guiding cylinder 20 has a material discharging inner hole 21, and the discharge guiding cylinder 20 is provided with a plurality of vacuum adsorption holes 22, and the plurality of vacuum adsorption holes 22 are distributed at intervals around the circumference of the material discharging inner hole 21.

[0036] The vacuum adsorber 30 is communicated with the plurality of vacuum adsorption holes 22, and the vacuum adsorber 30 is used to suck the ton bag tightly directly above the discharge guiding cylinder 20. Among them, the vacuum adsorber 30 can be a vacuum pump or other negative pressure equipment. And each vacuum adsorption hole 22 can be respectively connected to a subsystem of a vacuum adsorber 30, or jointly connected to a total vacuum adsorber 30.

[0037] The bag cutting knife 40 is movably arranged in the discharge guiding cylinder 20. The bag cutting driving mechanism 50 is drivingly connected to the bag cutting knife 40 and can drive the bag cutting knife 40 to cut out a discharge bag opening at the bottom of the ton bag.

[0038] The positive pressure puncture needle 60 can approach and move away from the ton bag placed on the discharge guiding cylinder 20 to puncture or move away from the ton bag. The positive pressure air source is connected to the positive pressure puncture needle 60.

[0039] During operation, when the part to be cut at the bottom of the ton bag is cleaned, the ton bag is lifted by a lifting device and moved to the discharge guiding cylinder 20, and the material discharging inner hole 21 is blocked. Then, the vacuum adsorber 30 operates, so that the plurality of vacuum adsorption holes 22 suck the ton bag tightly. In this way, the part of the ton bag directly above the material discharging inner hole 21 is in a tense state, which is beneficial for the bag cutting knife 40 to cut it to generate a discharge bag opening. Before cutting, first manually insert the positive pressure puncture needle 60 into the ton bag, or drive the positive pressure puncture needle 60 to insert into the ton bag by a mechanical driving device, so as to facilitate discharging with the help of positive pressure gas. Then, the bag cutting driving mechanism 50 drives the bag cutting knife 40 to cut the ton bag to realize the discharging of the ton bag; and the positive pressure air source provides pressure to the positive pressure puncture needle 60 to accelerate the discharging speed of the ton bag. After the ton bag is discharged, the positive pressure puncture needle 60 moves away from the ton bag, and then the ton bag can be removed from the discharge guiding cylinder 20.

[0040] Obviously, by arranging a plurality of vacuum adsorption holes 22 around the blanking inner hole 21 of the blanking guide cylinder 20, the ton bag can be tightly adsorbed, which is conducive to the bag cutting driving mechanism 50 driving the bag cutting knife 40 to cut the bottom of the ton bag, so as to stably generate a blanking bag mouth; this bag cutting method makes the blanking bag mouth positions generated by each ton bag the same, so it is not easy to make mistakes. Based on the ton bag being tightly adsorbed by the vacuum adsorption holes 22, the positive pressure puncture needle 60 is allowed to puncture the ton bag, and under the high-pressure blowing of the positive pressure air source, the ton bag will not shift, so that the unloading efficiency of the ton bag can be improved, and the unloading process is relatively stable. Moreover, based on the fact that the last remaining material in the ton bag can be drained by the air flow, the material in the ton bag can be unloaded more thoroughly.

[0041] Preferably, in order to improve the degree of mechanization, there are multiple positive pressure puncture needles 60. The multiple positive pressure puncture needles 60 are located above the blanking guide cylinder 20 and are arranged at intervals around the circumference of the blanking guide cylinder 20. Each positive pressure puncture needle 60 is driven by a linear driving mechanism 70. That is to say, at this time, the linear driving mechanism 70 replaces manual operation of the positive pressure puncture needle 60. It should be noted that in Figure 3 it can be seen that the multiple linear driving mechanisms 70 are evenly distributed at intervals around the circumference of the blanking cylinder. Preferably, the positive pressure puncture needles 60 are placed horizontally. With this setting, combined with the bottom of the ton bag being firmly adsorbed by the vacuum adsorption holes 22, the process of multiple positive pressure puncture needles 60 simultaneously piercing into the ton bag in the horizontal direction is more stable, and with the support of the ton bag material, the stability of its piercing into the ton bag process is further improved. Moreover, with this setting, by blowing the ton bag with multiple positive pressure puncture needles 60, when the material in the ton bag is less, the ton bag will not become deflated or smaller, and the air pressure in all directions is uniform, which is conducive to discharging the material in the ton bag completely. In addition, based on the positive pressure puncture needles 60 being close to and acting on the blanking bag mouth of the ton bag, after most of the material in the ton bag is discharged, the blown part of the ton bag will not sink to block the blanking bag mouth, so as to ensure the smoothness of the unloading process.

[0042] Preferably, a bag cutting device for ton bags further includes a plurality of puncture needle seats 80. Each positive pressure puncture needle 60 is respectively movably inserted into the puncture needle hole 801 of one of the puncture needle seats 80; when the positive pressure puncture needle 60 is in a non-working state, the positive pressure puncture needle 60 retracts into its corresponding puncture needle hole 801. With this setting, when the ton bag is lifted by a lifting device and moved to the blanking guide cylinder 20, the ton bag will not directly bend the positive pressure puncture needle 60, so as to ensure the safety of the puncture needle.

[0043] Preferably, the frame 10 is connected with a lifting and vibrating mechanism 90, the lifting and vibrating mechanism 90 is drivingly connected with a lifting vibrating disk 100, and a plurality of needle seats 80 and a plurality of linear driving mechanisms 70 are supported by the lifting vibrating disk 100. With such a setting, that is, through the vibrating action of the lifting and vibrating mechanism 90, the discharging efficiency of the ton bag can be further improved, and the phenomenon of material blockage can be solved. Among them, in this embodiment, preferably, the lifting and vibrating mechanism 90 includes an electromagnet 901 arranged on the frame 10, a magnetic attracting member 902 arranged on the lifting vibrating disk 100 and used for attracting and combining with the electromagnet 901, and an elastic member 903 arranged on the frame 10 and used for driving the electromagnet 901 and the magnetic attracting member 902 to move away from each other. With such a setting, through the frequent energization and power-off switching of the electromagnet 901 and the elastic reset of the elastic member 903, the lifting vibrating disk 100 can be lifted frequently, so that the relatively soft part on the ton bag can be slightly shaken, and the material can be shaken by using the high-frequency characteristic. It can be understood that as an alternative setting method, the lifting and vibrating mechanism 90 can be a lifting cylinder, or a vibrating motor and other existing mature devices. Among them, the elastic member 903 can be a spring, an elastic colloid, etc.

[0044] Preferably, the bag cutting knife 40 is installed in the discharging guiding cylinder 20 through a rotary frame 120, and the rotary axis of the rotary frame 120 is coaxial with the axis of the discharging guiding cylinder 20; the bag cutting driving mechanism 50 is drivingly connected with the rotary frame 120. With such a setting, that is, the cutting mode of the bag cutting knife 40 is further limited. In this embodiment, the bag cutting knife 40 generally only needs to rotate 330° - 350°, that is, it does not need to rotate 360° to completely cut off the skin of the ton bag to avoid it being mixed into the material. With such a setting, that is, by utilizing the advantage that the bottom of the ton bag is tightly adsorbed by the vacuum adsorber 30 and is relatively rigid and conducive to cutting. And as an alternative setting method, the bag cutting knife 40 can cut the discharging guiding cylinder 20 by lifting and other means.

[0045] Preferably, the rotary frame 120 is a toothed disk; the bag cutting driving mechanism 50 is a motor, and the motor is connected with the toothed disk through an intermediate gear 130. With such a setting, a seal can be made between the toothed disk and the discharging guiding cylinder 20, so as to effectively prevent the overflow of materials.

[0046] Preferably, since the bottom of the ton bag may not necessarily fall into the material discharging inner hole 21 of the discharging guiding cylinder 20, therefore, in order to ensure that the ton bag is cut, the top end of the bag cutting knife 40 extends above the discharging guiding cylinder 20.

[0047] Preferably, in order to better adsorb and hold the ton bag tightly, a plurality of rubber rings 110 are arranged at the top of the discharging guiding cylinder 20, and the plurality of rubber rings 110 are arranged around the periphery of the discharging guiding cylinder 20 and are used for supporting the ton bag. In this way, the translational friction force of the ton bag is increased, so that it is more difficult to move.

[0048] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. A bag cutting device for ton bags, characterized in that, Comprising: A frame (10); A discharging guiding cylinder (20), provided on the frame (10); the discharging guiding cylinder (20) has a material discharging inner hole (21); the discharging guiding cylinder (20) is provided with a plurality of vacuum adsorption holes (22), and the plurality of vacuum adsorption holes (22) are circumferentially and spaced apart around the circumference of the material discharging inner hole (21); A vacuum adsorber (30), communicating with the plurality of vacuum adsorption holes (22), and the vacuum adsorber (30) is used to tightly adsorb the ton bag directly above the discharging guiding cylinder (20); A bag cutting knife (40), the bag cutting knife (40) is installed in the discharging guiding cylinder (20) through a rotary frame (120), and the rotary axis of the rotary frame (120) is coaxial with the axis of the discharging guiding cylinder (20); A bag cutting driving mechanism (50), drivingly connected to the bag cutting knife (40), and capable of driving the bag cutting knife (40) to cut a discharging bag opening at the bottom of the ton bag; A positive pressure puncturing needle (60), capable of approaching and departing from the ton bag placed on the discharging guiding cylinder (20) to puncture or depart from the ton bag; A positive pressure air source, connected to the positive pressure puncturing needle (60); The frame (10) is connected with a lifting and vibrating mechanism (90), the lifting and vibrating mechanism (90) is drivingly connected with a lifting and vibrating disk (100), and a plurality of puncturing needle seats (80) and a plurality of linear driving mechanisms (70) are all supported by the lifting and vibrating disk (100); The lifting and vibrating mechanism (90) includes an electromagnet (901) provided on the frame (10), a magnetic attracting member (902) provided on the lifting and vibrating disk (100) and used for attracting and combining with the electromagnet (901), and an elastic member (903) provided on the frame (10) and used for driving the electromagnet (901) and the magnetic attracting member (902) to move away from each other.

2. The sack cutting device for ton bags according to claim 1, wherein: There are multiple positive pressure puncturing needles (60), the multiple positive pressure puncturing needles (60) are located above the discharging guiding cylinder (20), and are circumferentially and spaced apart around the circumference of the discharging guiding cylinder (20), and each positive pressure puncturing needle (60) is driven by a linear driving mechanism (70).

3. The sack cutting device for ton bags according to claim 2, characterized in that: The bag cutting device for ton bags further includes a plurality of puncturing needle seats (80), and each positive pressure puncturing needle (60) is respectively movably inserted through a puncturing needle hole (801) of one of the puncturing needle seats (80); when the positive pressure puncturing needle (60) is in a non-working state, the positive pressure puncturing needle (60) retracts into its corresponding puncturing needle hole (801).

4. The sack cutting device for ton bags according to claim 2, characterized in that: The positive pressure puncturing needle (60) is placed horizontally.

5. The sack cutting device for ton bags according to claim 4, characterized in that: The rotary frame (120) is a toothed disk; the bag cutting driving mechanism (50) is a motor, and the motor is connected to the toothed disk through an intermediate gear.

6. The bag cutting device for ton bags according to claim 4, characterized in that: The top end of the bag cutting knife (40) extends above the discharging guiding cylinder (20).

7. A bag cutting device for ton bags as described in claim 1, characterized in that: The top of the discharging guiding cylinder (20) is provided with a plurality of rubber rings (110), the plurality of rubber rings (110) are arranged around the periphery of the discharging guiding cylinder (20), and are used for supporting the ton bag.

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