A packaging bag easy-tear cutting device and packaging equipment

Abstract

The present invention relates to the field of packaging machinery technology, specifically a packaging bag easy-tear cutting device and packaging equipment, the cutting device includes a discharge channel for the packaging bag filled with contents to pass through, and a disc-shaped cutting blade arranged on one side of the discharge channel and capable of rotating, the outer edge of the cutting blade is provided with an annular blade, and the annular blade is provided with evenly distributed grooves at intervals, the cutting blade is parallel to the discharge direction of the discharge channel, and the side of the discharge channel is provided with an opening, and the blade of the cutting blade passes through the opening and extends into the discharge channel, so that the cutting blade can rotate relative to the packaging bag under the drive of the packaging bag and can cut the packaging bag; the packaging equipment is a packaging machine including the above-mentioned packaging bag easy-tear cutting device. The packaging bag easy-tear cutting device and packaging equipment of the present invention have simple structure, are convenient and practical, have good easy-tear forming effect, have low manufacturing, use and maintenance costs, and have a wide range of applications.

Description

Technical Field

[0001] The invention relates to the technical field of packaging machinery, in particular to a packaging bag easy-tear cutting device and packaging equipment. Background Art

[0002] Flexible packaging products refer to various products that are packaged by packaging machinery by putting the contents (such as tissue paper, hand towels, etc.) into packaging bags. They are widely used in daily life and industrial production, such as the common bagged tissue paper and bagged hand towels in daily life. For the convenience of use, current flexible packaging products usually need to open an easy-tear opening on the packaging bag. In the prior art, the easy-tear opening is usually formed by punching, but this method is only applicable to packaging machinery that uses sheet film (single-layer film) for three-dimensional folding packaging. This packaging machinery needs to be equipped with an easy-tear opening punching mechanism, and its working process is: first, the easy-tear opening is punched at a designated position on the sheet film by the easy-tear opening punching mechanism to form an easy-tear opening, and then the sheet film is folded and wrapped around the contents to form a packaging bag. However, this packaging machinery and its easy-tear opening punching mechanism are complex and expensive in structure, and the cost of use and maintenance is high, and it is not suitable for packaging machinery that directly fills the contents into the tubular film (tubular formed packaging bag). Summary of the invention

[0003] In order to overcome the defects existing in the prior art, the task of the present invention is to provide a packaging bag easy-tear cutting device and packaging equipment. The packaging bag easy-tear cutting device has a simple structure, is convenient and practical, and has low manufacturing, use and maintenance costs. Moreover, the packaging bag easy-tear cutting device directly cuts the easy-tear edge on the packaging bag that has been filled with contents to form an easy-tear edge, so it is suitable for various packaging machines and has a wide range of applications. The packaging equipment adopts the above-mentioned packaging bag easy-tear cutting device, does not need to set a punching mechanism, has a simple structure, is easy to use, and has low manufacturing, use and maintenance costs.

[0004] One of the tasks of the present invention is achieved by the following technical solutions:

[0005] A device for cutting an easy-tear edge of a packaging bag comprises a discharge channel for allowing a packaging bag filled with contents to pass through, and a disc-shaped cutting blade arranged on one side of the discharge channel and capable of rotating around its own axis, an annular blade is arranged on the outer edge of the cutting blade, and grooves evenly distributed are arranged at intervals on the annular blade, the cutting blade is parallel to the discharge direction of the discharge channel, an opening corresponding to the cutting blade is arranged on the side of the discharge channel, the blade of the cutting blade passes through the opening and extends into the discharge channel, so that the cutting blade can rotate relative to the packaging bag under the drive of the packaging bag and can cut the packaging bag.

[0006] Preferably, the packaging bag easy-tear edge cutting device also includes a discharging platform, and the cutting blade is mounted on a rotating shaft perpendicular to its axis so as to be rotatable, and the rotating shaft is directly or indirectly mounted on the discharging platform via a rotating shaft mounting seat.

[0007] Preferably, a damper is provided on the rotating shaft mounting seat, and the damper is connected to the rotating shaft so as to apply a damping force to the rotation of the rotating shaft, and the magnitude of the damping force can be adjusted by the damper.

[0008] Preferably, the rotating shaft mounting seat is further provided with a rotating shaft position adjustment mechanism, through which the position of the rotating shaft mounting seat can be adjusted, thereby adjusting the depth of the cutting blade's edge extending into the discharge channel.

[0009] Preferably, the discharge channel includes two channel side panels that are relatively arranged on the left and right and fixedly connected to the discharge platform, the inlet ends of the two channel side panels are provided with a trumpet structure for guiding the packaging bag to enter between the two channel side panels, and the two channel side panels can guide the packaging bag passing therethrough, one of the channel side panels is provided with the opening for the blade of the cutting blade to pass through, the two channel side panels are respectively mounted on the discharge platform through a side panel mounting seat, and the side panel mounting seat is also provided with a side panel position adjustment mechanism for adjusting the position of the side panel mounting seat, and the distance between the two channel side panels can be adjusted through the side panel position adjustment mechanism, and the rotating shaft mounting seat is installed on the corresponding side panel mounting seat, so that the rotating shaft mounting seat can move with the side panel mounting seat.

[0010] Preferably, the shaft position adjustment mechanism and / or the side plate position adjustment mechanism include a long hole and a locking screw arranged on the corresponding mounting seat, the direction of the long hole is perpendicular to the corresponding channel side plate, and the position of the corresponding mounting seat can be adjusted by loosening the locking screw.

[0011] Preferably, the packaging bag easy-tear cutting device also includes a pushing mechanism for driving the packaging bag through the discharge channel, the pushing mechanism includes a first driving device and a push rod driven by the first driving device, and the push rod can directly or indirectly push the packaging bag through the discharge channel.

[0012] Preferably, the packaging bag easy-tear cutting device also includes a damping device for applying a damping force to the movement of the packaging bag, and the damping device includes a damping brush fixedly arranged above the discharge channel, and the damping brush can rub the top of the packaging bag to slow down the packaging bag.

[0013] Preferably, the packaging bag easy-tear cutting device also includes a traction device for pulling the packaging bag in the discharge channel forward, the traction device includes a conveyor belt assembly arranged above the discharge channel and in the same direction as the discharge channel, and a second drive device for driving the conveyor belt assembly to operate, the lower surface of the conveyor belt assembly can be in contact with the upper surface of the packaging bag, thereby pulling the packaging bag forward through friction.

[0014] Compared with the prior art, the packaging bag easy-tear cutting device of the present invention has a simple structure, is convenient and practical, has a good easy-tear forming effect, and has low manufacturing, use and maintenance costs. Moreover, the packaging bag easy-tear cutting device directly cuts the easy-tear on the packaging bag that has been filled with contents to form the easy-tear, so it is suitable for various packaging machines and has a wide range of applications.

[0015] The second task of the present invention is achieved through the following technical solutions:

[0016] A packaging device comprises a packaging machine for soft packaging and the packaging bag easy-tear cutting device, wherein the packaging bag easy-tear cutting device is arranged at the discharge port of the packaging machine.

[0017] Compared with the prior art, the packaging machine of the present invention adopts the above-mentioned packaging bag easy-tear cutting device, does not need to set up a punching mechanism, has a simple structure, is easy to use, and has low manufacturing, use and maintenance costs.

[0018] The concept, specific structure and effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the easy-tear cutting device for packaging bags in Example 1;

[0020] Figure 2 is a schematic structural diagram of a cutting blade of the packaging bag easy-tear cutting device in Example 1;

[0021] Figure 3 is a schematic structural diagram of the easy-tear cutting device for packaging bags in Example 2;

[0022] Figure 4 is a schematic structural diagram of the easy-tear cutting device for packaging bags in Example 3;

[0023] Figure 5 It is a schematic diagram of the structure of the easy-tear cutting device for packaging bags in Example 4.

[0024] Among them: a discharge channel 1, an opening 11, a channel side panel 12, a side panel mounting seat 121, a side panel position adjustment mechanism 122, a bell-mouth structure 13, a cutting blade 2, a blade 21, a groove 22, a cutting blade 2, a discharge platform 3, a rotating shaft 4, a rotating shaft mounting seat 41, a rotating shaft position adjustment mechanism 42, a damper 5, a pushing mechanism 6, a first driving device 61, a pushing rod 62, a damping brush 7, a traction device 8, a conveyor belt assembly 81, a second driving device 82, a packaging bag 200, and an easy-tear opening 201. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0026] It should be noted that when an element is said to be "connected" to another element, it may be directly connected to the other element or indirectly connected through an intermediate element. In addition, the terms "left", "right", "inner", "outer", "front", "rear" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.

[0027] The "damper" and "magnetic damper" in this application can be selected from existing products that are very mature in the market, so this article will not further describe and limit their structures in detail. Example

[0028] like Figure 1-2 As shown, a packaging bag easy-tear cutting device comprises a discharge channel 1 for a packaging bag 200 filled with contents to pass through, and a disc-shaped cutting blade 2 arranged on one side of the discharge channel 1 and capable of rotating around its own axis, an annular blade 21 is arranged on the outer edge of the cutting blade 2, and evenly distributed grooves 22 are arranged at intervals on the annular blade 21, the cutting blade 2 is parallel to the discharge direction of the discharge channel 1, and an opening 11 corresponding to the cutting blade 2 is arranged on the side of the discharge channel 1, and the blade 21 of the cutting blade 2 passes through the opening 11 and extends into the discharge channel 1, so that the cutting blade 2 can rotate relative to the packaging bag 200 under the drive of the packaging bag 200 and can cut the packaging bag 200, thereby forming an easy-tear 201 on the surface of the packaging bag 200.

[0029] When in use, the packaging bag easy-tear cutting device is usually arranged at the discharge port of the packaging machine, so the packaging bag easy-tear cutting device does not need to be separately provided with a pushing mechanism, and is generally driven by the pushing mechanism or conveying device on the packaging machine to drive the packaging bag filled with the contents to the discharge channel 1 of the packaging bag easy-tear cutting device. Since the packaging bag 200 is in a full and propped up state under the support of the contents, when the packaging bag 200 passes through the discharge channel 1, the packaging bag 200 will squeeze and drive the cutting blade 2 to rotate, thereby cutting the easy-tear opening 201 on the surface of the packaging bag 200. Since the grooves 22 on the annular blade 21 of the cutting blade 2 are distributed at intervals, that is, there is a certain distance between two adjacent grooves 22, it can ensure that the easy-tear opening 201 formed by cutting on the surface of the packaging bag 200 is intermittent, and the blade 21 will not be too sharp to hook or tear the packaging bag 200 or the contents. Compared with the prior art, the packaging bag easy-tear cutting device of the present invention has a simple structure, is convenient and practical, has a good easy-tear forming effect, has a low manufacturing cost, and does not require the provision of an additional power-driven cutting blade 2, so the use cost and maintenance cost are low. In addition, the packaging bag easy-tear cutting device directly cuts the easy-tear 201 on the packaging bag 200 that has been filled with contents, and is usually installed at the discharge port of the packaging machine, and will not be affected by the packaging method of the packaging bag 200, so it can be applied to various packaging machines and has a wide range of applications.

[0030] As a preferred embodiment, the packaging bag tearable edge cutting device also includes a discharge platform 3, and the cutting blade 2 is installed on a rotating shaft 4 perpendicular to its axis. The rotating shaft 4 is directly or indirectly installed on the discharge platform 3 through a rotating shaft mounting seat 41, and the rotating shaft 4 and the mounting seat 41 are rotatably connected through a rotating bearing, so that the cutting blade 2 can rotate around its own axis.

[0031] As a preferred embodiment, a shaft position adjustment mechanism 42 is also provided on the shaft mounting seat 41, and the position of the shaft mounting seat 41 can be adjusted through the shaft position adjustment mechanism 42, thereby adjusting the depth of the blade 21 of the cutting blade 2 extending into the discharge channel 1, thereby facilitating the adjustment of the cutting effect of the easy-tear opening 201 according to different actual conditions.

[0032] As a preferred embodiment, the discharge channel 1 includes two channel side panels 12 which are arranged opposite to each other on the left and right and fixedly connected to the discharge platform 3. The entrance ends of the two channel side panels 12 are provided with a trumpet structure 13 for guiding the packaging bag 200 to enter between the two channel side panels 12. The two channel side panels 12 can guide the packaging bag 200 passing therethrough. One of the channel side panels 12 is provided with an opening 11 for the blade 21 of the cutting blade 2 to pass through. The two channel side panels 12 are respectively installed on the discharge platform 3 through a side panel mounting seat 121. The side panel mounting seat 121 is also provided with a side panel position adjustment mechanism 122 for adjusting the position of the side panel mounting seat 121. The distance between the two channel side panels 12 can be adjusted through the side panel position adjustment mechanism 122, so that the width of the discharge channel 1 can be adaptively adjusted according to the width of the packaging bag 200, so that the discharge channel 1 can maintain the positioning and guidance of the packaging bag 200. Furthermore, the rotating shaft mounting seat 41 is installed on the corresponding side panel mounting seat 121, so that the rotating shaft mounting seat 41 can move with the side panel mounting seat 121. In this way, when the width of the discharge channel 1 is adjusted by adjusting the position of the side panel mounting seat 121, the depth of the blade 21 of the cutting blade 2 extending into the discharge channel 1 will not be changed, thereby not affecting the cutting of the easy-tear opening 201.

[0033] As a preferred embodiment, the shaft position adjustment mechanism 42 and the side plate position adjustment mechanism 122 both include a long hole and a locking screw provided on the corresponding mounting seat, the locking screw is omitted in the drawings, the direction of the long hole is perpendicular to the corresponding channel side plate 12, and the position of the corresponding mounting seat can be adjusted by loosening the locking screw. This position adjustment mechanism has a simple structure and is easy to adjust. Of course, in other embodiments, other position adjustment mechanisms in the prior art can also be selected, such as screw adjustment or electric adjustment.

[0034] As a preferred embodiment, the packaging bag easy-tear cutting device also includes a damping device for applying a damping force to the movement of the packaging bag 200. The damping device includes a damping brush 7 fixedly arranged above the discharge channel 1. The damping brush 7 can rub the top of the packaging bag 200 to decelerate the packaging bag 200. During operation, the packaging bag 200 is pushed directly or indirectly by the packaging machine's pushing mechanism, and the instantaneous speed of the pushing is relatively fast, resulting in a relatively fast instantaneous speed of the packaging bag 200 entering the discharge channel 1, which can easily cause the cutting blade to accidentally hook or tear the packaging bag 200 or the contents, affecting the forming effect of the easy-tear opening 201 on the packaging bag 200 and the contents. By providing the damping device, a damping force can be applied to the fast-moving packaging bag 200, thereby facilitating avoiding affecting the forming effect of the easy-tear opening 201 on the packaging bag 200. Example

[0035] The present embodiment is a packaging bag easy-tear cutting device, which is based on the technical solution of the first embodiment, and further improves as follows:

[0036] like Figure 3 As shown, a damper 5 is provided on the rotating shaft mounting seat 41, and the damper 5 is connected to the rotating shaft 4 so as to apply a damping force to the rotation of the rotating shaft 4, and the magnitude of the damping force can be adjusted by the damper 5. The damper 5 is preferably a very mature magnetic damper (also called a torque controller, a magnetic damping tensioner or a magnetic brake) currently on the market, and of course other dampers 5 can also be selected. By providing the damper 5, a damping force can be applied to the rotation of the rotating shaft 4, so that when the blade 21 of the cutting blade 2 rotates on the surface of the packaging bag 200, it will also produce a relative sliding with the surface of the packaging bag 200, thereby helping the blade 21 of the cutting blade 2 to produce a cutting effect on the surface of the packaging bag 200, and then helping to achieve a better cutting effect of the easy-tear opening 201. Example

[0037] The present embodiment is a packaging bag easy-tear cutting device, which is based on the technical solution of embodiment 1 or embodiment 2, and further improves as follows:

[0038] like Figure 4 As shown, the packaging bag easy-tear cutting device also includes a pushing mechanism 6 for conveying the packaging bag 200 through the discharge channel 1. The pushing mechanism 6 includes a first driving device 61 and a push rod 62 driven by the first driving device 61. The push rod 62 can directly or indirectly push the packaging bag 200 through the discharge channel 1. The indirect method is generally that the push rod 62 directly pushes a packaging bag, and then the packaging bag pushes the packaging bag in front of it to move into the discharge channel 1. The first driving device 61 in this embodiment uses a motor-driven conveyor belt to drive the push rod 62 to move. Of course, in other embodiments, other driving devices in the prior art can also be selected, such as cylinders. Example

[0039] The present embodiment is a packaging bag easy-tear cutting device, which is based on the technical solution of embodiment 1, embodiment 2 or embodiment 3, and further improves as follows:

[0040] like Figure 5As shown, the packaging bag easy-tear cutting device also includes a traction device 8 for pulling the packaging bag 200 in the discharge channel 1 forward, and the traction device 8 includes a conveyor belt assembly 81 arranged above the discharge channel 1 and in the same direction as the discharge channel 1, and a second driving device 82 for driving the conveyor belt assembly 81 to operate. The lower surface of the conveyor belt assembly 81 can be in contact with the upper surface of the packaging bag 200 so as to pull the packaging bag 200 forward through friction. The second driving device 82 in this embodiment uses a motor to drive the conveyor belt assembly 81 to operate. During operation, since the packaging bag 200 is pushed directly or indirectly by the pushing mechanism at a relatively fast instant speed, the packaging bag 200 entering the discharge channel 1 at a relatively fast instant speed, which may easily cause the cutting blade to accidentally hook or tear the packaging bag 200 or the contents, thereby affecting the forming effect of the easy-tear opening 201 on the packaging bag 200 and the contents. By setting the traction device 8, the traction device 8 can be used to pull the packaging bag 200 in the discharge channel 1 forward at a uniform speed, thereby greatly improving the forming effect of the easy-tear opening 201 on the packaging bag 200. Example

[0041] The present embodiment is a packaging device, including a packaging machine for flexible packaging, and a packaging bag easy-tear cutting device as described in any one of embodiments 1-4, wherein the packaging bag easy-tear cutting device is arranged at the discharge port of the packaging machine, and the discharge channel of the packaging bag easy-tear cutting device is connected to the discharge port of the packaging machine. During operation, after the packaging machine has completed the process of filling the packaging bag with contents and sealing, the packaging bag passes through the packaging bag easy-tear cutting device, and an easy-tear opening can be cut on the surface of the packaging bag. The packaging machine in the present embodiment is a variety of packaging machines for flexible packaging in the prior art, so this article does not provide a detailed description and limitation on its type and structure. Compared with the prior art, the packaging equipment of the present invention adopts the above-mentioned packaging bag easy-tear cutting device, does not need to set a punching mechanism, has a simple structure, is easy to use, and has low manufacturing, use and maintenance costs.

[0042] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A packaging bag easy-tear cutting device, characterized in that: The invention comprises a discharge channel for passing a packaging bag filled with contents, and a disc-shaped cutting blade arranged on one side of the discharge channel and capable of rotating around its own axis, an annular blade is arranged on the outer edge of the cutting blade, and grooves evenly distributed are arranged at intervals on the annular blade, the cutting blade is parallel to the discharge direction of the discharge channel, an opening corresponding to the cutting blade is arranged on the side of the discharge channel, the blade of the cutting blade passes through the opening and extends into the discharge channel, so that the cutting blade can rotate relative to the packaging bag under the drive of the packaging bag and can cut the packaging bag; the packaging bag easy-tear cutting device also comprises The material discharging platform includes a cutting blade mounted on a rotating shaft perpendicular to its axis so as to be rotatable, and the rotating shaft is directly or indirectly mounted on the material discharging platform through a rotating shaft mounting seat; a damper is provided on the rotating shaft mounting seat, and the damper is connected to the rotating shaft so as to apply a damping force to the rotation of the rotating shaft, and the magnitude of the damping force can be adjusted by the damper, so that when the cutting blade rotates on the surface of the packaging bag, it will also produce a relative sliding with the surface of the packaging bag, thereby facilitating the cutting blade to produce a cutting effect on the surface of the packaging bag; the rotating shaft mounting seat is also provided with a damper, and the damper is connected to the rotating shaft so as to apply a damping force to the rotation of the rotating shaft, and the magnitude of the damping force can be adjusted by the damper, so that when the cutting blade rotates on the surface of the packaging bag, it will also produce a relative sliding with the surface of the packaging bag, thereby facilitating the cutting blade to produce a cutting effect on the surface of the packaging bag. A shaft position adjustment mechanism is provided, through which the position of the shaft mounting seat can be adjusted, thereby adjusting the depth of the cutting blade's blade extending into the discharge channel; the discharge channel includes two channel side panels that are oppositely arranged on the left and right and fixedly connected to the discharge platform, the inlet ends of the two channel side panels are provided with a trumpet structure for guiding the packaging bag to enter between the two channel side panels, the two channel side panels can guide the packaging bag passing therethrough, one of the channel side panels is provided with the opening for the cutting blade's blade to pass through, and the two channel side panels are respectively It is installed on the discharging platform through a side panel mounting seat, and the side panel mounting seat is also provided with a side panel position adjustment mechanism for adjusting the position of the side panel mounting seat. The distance between the two channel side panels can be adjusted through the side panel position adjustment mechanism, and the rotating shaft mounting seat is installed on the corresponding side panel mounting seat, so that the rotating shaft mounting seat can move with the side panel mounting seat; the rotating shaft position adjustment mechanism and / or the side panel position adjustment mechanism include a long hole and a locking screw arranged on the corresponding mounting seat, and the direction of the long hole is perpendicular to the corresponding channel side panel, and the position of the corresponding mounting seat can be adjusted by loosening the locking screw.

2. The packaging bag easy-tear cutting device according to claim 1, characterized in that: The packaging bag easy-tear cutting device also includes a pushing mechanism for driving the packaging bag to pass through the discharge channel. The pushing mechanism includes a first driving device and a push rod driven by the first driving device. The push rod can directly or indirectly push the packaging bag through the discharge channel.

3. The packaging bag easy-tear cutting device according to claim 1, characterized in that: The packaging bag easy-tear cutting device also includes a damping device for applying a damping force to the movement of the packaging bag, and the damping device includes a damping brush fixedly arranged above the discharge channel, and the damping brush can rub the top of the packaging bag to slow down the packaging bag.

4. The packaging bag easy-tear cutting device according to claim 1, characterized in that: The packaging bag easy-tear cutting device also includes a traction device for pulling the packaging bag in the discharge channel forward, the traction device includes a conveyor belt assembly arranged above the discharge channel and in the same direction as the discharge channel, and a second drive device for driving the conveyor belt assembly to operate, the lower surface of the conveyor belt assembly can be in contact with the upper surface of the packaging bag, thereby pulling the packaging bag forward through friction.

5. A packaging device, characterized in that: The packaging equipment comprises a packaging machine for flexible packaging, and a packaging bag easy-tear cutting device as described in any one of claims 1 to 4, wherein the packaging bag easy-tear cutting device is arranged at a discharge port of the packaging machine.

Images