Self-adaptive cutting device for bale breaker

Abstract

The utility model provides a self-adaptive cutting device for a bale breaker, which comprises two cutting mechanisms, and the two cutting mechanisms are arranged in a staggered manner and are suitable for being connected with a shell of the bale breaker; the cutting mechanism comprises a swing arm assembly, a cutting blade, a driving assembly and a tension assembly. One end of the swing arm assembly is suitable for being connected with the machine shell. The cutting blade is connected with the other end of the swing arm assembly. The power output end of the driving assembly is connected with the cutting blade and used for driving the cutting blade to rotate. One end of the tension assembly is connected with the swing arm assembly, and the other end is connected with the housing. According to the self-adaptive cutting device for the bale breaker, after the two swing arm assemblies are opened, the distance between the two cutting blades can change along with the change of the width of materials; meanwhile, the cutting blade can abut against the surface of the material bag through the pulling force of the pulling force assembly, enough contact pressure exists between the cutting blade and the material bag, and the cutting effect is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the unpacking equipment technical field, and specifically relates to a self -adaptation cutting device for unpacking machine. BACKGROUND

[0002] The unpacking machine is mainly applied to the scene that needs to handle bagged powder and granular materials, such as chemical plants, pharmaceutical factories, food processing plants, electronic factories, building material factories and the like.In these scenes, the powder unpacking machine can quickly and accurately complete the unpacking and discharging work, improve production efficiency, reduce labor cost, and protect the safety of operating personnel and the cleanliness of the environment.

[0003] During unpacking operation, the material is usually conveyed to the cutting mechanism by the conveying device, the cutting mechanism cuts open the material bag, continues to convey forward to make the material fall into the hopper, and the empty bag is directly discharged from the bag discharge bin.

[0004] The existing cutting mechanism includes two swing arms arranged in the shape of "R", one end is rotationally connected with the shell, and the other end is provided with a blade, during operation, the swing arm is pulled by the cylinder to drive the blade to separate to both sides, and the cutting of the material bag is realized in the process.

[0005] Since the swing arm is actively pulled by the cylinder, different parameters need to be set for different specifications of the material bag to match the speed of opening of the two blades and the distance between the blades after opening with the width of the material bag, and it is relatively cumbersome to switch different specifications of the material bag.

[0006] In addition, if the material is hard, the blade cannot cut into the material, and since the swing arm is actively pulled by the cylinder, the swing arm is in a rigid limiting state, and there is a lack of contact pressure between the blade and the material bag, so it is difficult to ensure the cutting effect. INVENTION CONTENTS

[0007] The utility model provides a kind of self -adaptation cutting device for unpacking machine, to solve the technical problem proposed in the above background technique.

[0008] To achieve the above object, the technical scheme adopted by the utility model is as follows: provide a kind of self -adaptation cutting device for unpacking machine, including two cutting mechanisms, two described cutting mechanisms are mispositioned and are suitable for being connected with the shell of unpacking machine;The cutting mechanism includes:

[0009] swing arm assembly, one end is suitable for being connected with the shell;

[0010] cutting blade, connected with the other end of the swing arm assembly;

[0011] drive assembly, power output end is connected with the cutting blade, for driving the cutting blade to rotate;And

[0012] A tension assembly, one end of which is connected with the swing arm assembly, and the other end of which is adapted to be connected with the machine shell;

[0013] Wherein, the swing arm assembly of the two cutting mechanisms is adapted to rotate in opposite directions and open under the pushing of the material bag, and the tension assembly is used to provide reverse tension for the swing arm assembly when the swing arm assembly is rotated by the pushing of the material bag.

[0014] In a possible implementation manner of the self-adaptive cutting device for the bale opener, the swing arm assembly comprises:

[0015] An arm body, which is horizontally arranged;

[0016] A first shaft sleeve, which is vertically arranged on the upper side of the arm body, and the lower end of which is connected with one end of the arm body, and the first shaft sleeve is adapted to be rotationally matched with the machine shell;

[0017] A second shaft sleeve, which is vertically arranged on the lower side of the arm body, and the upper end of which is connected with the other end of the arm body; and

[0018] A cutter shaft, which is arranged in the second shaft sleeve and is rotationally matched with the second shaft sleeve; and the cutting blade is connected with the lower end of the cutter shaft.

[0019] In a possible implementation manner of the self-adaptive cutting device for the bale opener, a cavity is arranged in the arm body, and the driving assembly comprises:

[0020] A transmission shaft, which is arranged in the first shaft sleeve and extends into the arm body;

[0021] A motor assembly, a power output end of which is connected with the transmission shaft and is used to drive the transmission shaft to rotate; and

[0022] A transmission assembly, which is arranged in the arm body, a power input end of which is connected with the transmission shaft, and a power output end of which is connected with the cutter shaft.

[0023] In a possible implementation manner of the self-adaptive cutting device for the bale opener, the transmission assembly comprises:

[0024] Two synchronous wheels, which are respectively connected with the transmission shaft and the cutter shaft; and

[0025] A synchronous belt, which is sleeved on the two synchronous wheels.

[0026] In a possible implementation manner of the self-adaptive cutting device for the bale opener, the swing arm assembly further comprises a rocker arm and a shell sleeve, one end of the rocker arm is connected with the first shaft sleeve, the tension assembly is connected with the end of the rocker arm which is away from the first shaft sleeve, the shell sleeve is sleeved on the outer side of the first shaft sleeve and is rotationally matched with the first shaft sleeve, and the shell sleeve is adapted to be connected with the machine shell.

[0027] In one possible implementation of the adaptive cutting device for unpacking machine provided by this utility model, the tension component includes a spring, one end of which is connected to the end of the rocker arm away from the first bushing, and the other end is adapted to be connected to the housing.

[0028] In one possible implementation of the adaptive cutting device for unpacking machine provided by this utility model, the tension component includes a pull rod, which is connected to the end of the spring away from the rocker arm, and the pull rod is adapted to rotate with the housing.

[0029] In one possible implementation of the adaptive cutting device for unpacking machine provided by this utility model, the cutting mechanism further includes an assist cylinder, one end of which is hinged to the end of the rocker arm away from the first bushing, and the other end of which is adapted to be hinged to the housing; the assist cylinder is used to provide an opening thrust for the rocker arm assembly, and the thrust is less than the resistance when the rocker arm assembly opens.

[0030] In one possible implementation of the adaptive cutting device for unpacking machine provided by this utility model, the cutting mechanism further includes a stop block, which is fixedly arranged and adapted to abut against the side of the rocker arm facing the tension component in the initial position.

[0031] In one possible implementation of the adaptive cutting device for unpacking machine provided by this utility model, the cutting mechanism further includes a sensor, which is fixedly installed to detect the position of the rocker arm.

[0032] The beneficial effects of the adaptive cutting device for unpacking machines provided by this utility model are as follows: Compared with the prior art, the adaptive cutting device for unpacking machines provided by this utility model relies on the pushing force of the material bag to open the two swing arm assemblies and reset them through the tension assembly. Therefore, after the two swing arm assemblies are opened, the distance between the two cutting blades can change with the width of the material, without needing to reset the parameters with changes in the material bag specifications, making it more convenient to use. At the same time, by applying tension to the opened swing arm assemblies through the tension assembly, when the material is too hard for the cutting blade to cut into, the cutting blade can be pressed against the surface of the material bag by the tension of the tension assembly, so that there is sufficient contact pressure between the cutting blade and the material bag, ensuring the cutting effect. Attached Figure Description

[0033] Figure 1 A three-dimensional structural schematic diagram of the adaptive cutting device for a packaging unpacking machine provided in an embodiment of this utility model;

[0034] Figure 2 for Figure 1 Enlarged view of part A in the image;

[0035] Figure 3 A top view of the adaptive cutting device for a packaging unpacking machine provided in this embodiment of the utility model;

[0036] Figure 4 For along Figure 3 Cross-sectional view of the middle BB line;

[0037] Explanation of reference numerals in the attached figures:

[0038] 1010, Housing; 3011, First bushing; 3012, Arm body; 3013, Second bushing;

[0039] 3014, Cutter shaft; 3015, Rocker arm; 3020, Cutting blade; 3031, Drive shaft;

[0040] 3032, Motor assembly; 3041, Synchronous pulley; 3042, Synchronous belt; 3051, Tie rod;

[0041] 3052, Spring; 3060, Power-assisted cylinder; 3070, Stop block; 3080, Sensor;

[0042] 3090, casing. Detailed Implementation

[0043] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The following description of at least one exemplary embodiment is actually illustrative only and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0045] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0046] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0047] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0048] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0049] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0050] Please refer to the following: Figures 1 to 4The adaptive cutting device for a packaging unpacking machine provided by this utility model will now be described. The adaptive cutting device for a packaging unpacking machine includes two cutting mechanisms, which are staggered and adapted to be connected to the housing 1010 of the packaging unpacking machine. Each cutting mechanism includes a swing arm assembly, a cutting blade 3020, a drive assembly, and a tension assembly. One end of the swing arm assembly is adapted to be connected to the housing 1010; the cutting blade 3020 is connected to the other end of the swing arm assembly; the power output end of the drive assembly is connected to the cutting blade 3020 to drive the cutting blade 3020 to rotate; one end of the tension assembly is connected to the swing arm assembly, and the other end is adapted to be connected to the housing 1010.

[0051] Among them, the swing arm assemblies of the two cutting mechanisms are adapted to rotate and open in opposite directions under the push of the material bag, and the tension assembly is used to provide a reverse tension to the swing arm assembly when the material bag pushes the swing arm assembly to rotate.

[0052] It should be noted that the two swing arm assemblies are arranged in an "in" shape on the upper side of the conveying mechanism of the unpacking machine. When the conveying mechanism transports the material bag, it relies on the pushing force of the conveying mechanism on the material bag to push the two swing arm assemblies open, and in this process, the front end and two sides of the material bag are cut open.

[0053] The beneficial effects of the adaptive cutting device for unpacking machines provided by this utility model are as follows: Compared with the prior art, the adaptive cutting device for unpacking machines provided by this utility model relies on the pushing force of the material bag to open the two swing arm assemblies and reset them through the tension assembly. Therefore, after the two swing arm assemblies are opened, the distance between the two cutting blades 3020 can change with the width of the material, without needing to reset the parameters as the material bag size changes, making it more convenient to use. At the same time, by applying tension to the opened swing arm assemblies through the tension assembly, when the material is too hard for the cutting blades 3020 to cut into, the cutting blades 3020 can be pressed against the surface of the material bag by the tension of the tension assembly, so that there is sufficient contact pressure between the cutting blades 3020 and the material bag, ensuring the cutting effect.

[0054] like Figure 1 and Figure 4 As shown, in a specific embodiment of the adaptive cutting device for a packaging unpacking machine provided in this utility model, the swing arm assembly includes an arm body 3012, a first bushing 3011, a second bushing 3013, and a cutter shaft 3014. The arm body 3012 is arranged horizontally; the first bushing 3011 is arranged vertically on the upper side of the arm body 3012, and its lower end is connected to one end of the arm body 3012. The first bushing 3011 is adapted to rotate with the housing 1010; the second bushing 3013 is arranged vertically on the lower side of the arm body 3012, and its upper end is connected to the other end of the arm body 3012; the cutter shaft 3014 passes through the second bushing 3013 and rotates with the second bushing 3013; the cutting blade 3020 is connected to the lower end of the cutter shaft 3014.

[0055] It should be noted that the arm body 3012, the first bushing 3011, the second bushing 3013 and the cutter shaft 3014 form a “┌┘” shaped structure. The cutting blade 3020 is set horizontally, with its upper end rotating in conjunction with the machine housing 1010 and its lower end being equipped with the cutting blade 3020.

[0056] like Figure 4 As shown in the embodiment of the adaptive cutting device for unpacking machine provided in this utility model, the arm body 3012 is provided with a cavity, and the driving component includes a drive shaft 3031, a motor assembly 3032 and a transmission assembly. The drive shaft 3031 passes through the first bushing 3011 and its lower end extends into the arm body 3012. The power output end of the motor assembly 3032 is connected to the drive shaft 3031 to drive the drive shaft 3031 to rotate. The transmission assembly is provided in the arm body 3012, with its power input end connected to the drive shaft 3031 and its power output end connected to the cutter shaft 3014.

[0057] Specifically, such as Figure 4 As shown in a specific embodiment of the adaptive cutting device for a packaging unpacking machine provided in this utility model, the transmission assembly includes two synchronous pulleys 3041 and a synchronous belt 3042. The two synchronous pulleys 3041 are respectively connected to the transmission shaft 3031 and the cutter shaft 3014; the synchronous belt 3042 is sleeved on the two synchronous pulleys 3041. The power of the motor assembly 3032 is transmitted to the cutter shaft 3014 through the synchronous pulleys 3041 and the synchronous belt 3042, thereby driving the cutting blade 3020 to rotate.

[0058] Specifically, the transmission components can also be sprockets and chains, or pulleys and belts, etc.

[0059] like Figure 3 and Figure 4 As shown in the embodiment of the adaptive cutting device for unpacking machine provided in this utility model, the swing arm assembly further includes a rocker arm 3015 and a housing 3090. One end of the rocker arm 3015 is connected to the first bushing. The tension assembly is connected to the end of the rocker arm 3015 away from the first bushing. The housing 3090 is sleeved on the outside of the first bushing 3011 and rotates with the first bushing 3011. The housing 3090 is adapted to be connected to the housing 1010.

[0060] It should be noted that bearings are provided between the drive shaft 3031 and the first bushing 3011, between the first bushing 3011 and the housing 3090, and between the cutter shaft 3014 and the second first bushing 3013, in order to reduce friction.

[0061] like Figure 1 and Figure 3As shown, in a specific embodiment of the adaptive cutting device for unpacking machine provided in this utility model, the tension component includes a spring 3052. One end of the spring 3052 is connected to the end of the rocker arm 3015 away from the first bushing, and the other end is adapted to be connected to the housing 1010.

[0062] Furthermore, such as Figure 1 and Figure 3 As shown, in a specific embodiment of the adaptive cutting device for unpacking machine provided in this utility model, the tension component includes a pull rod 3051, which is connected to the end of the spring 3052 away from the rocker arm 3015, and the pull rod 3051 is adapted to rotate with the housing 1010.

[0063] It should be noted that the pull rod 3051 is equipped with a rotating shaft, which rotates with the housing 1010 so that the spring 3052 can bear axial force instead of torque.

[0064] like Figure 1 and Figure 3 As shown in the embodiment of the adaptive cutting device for unpacking machine provided in this utility model, the cutting mechanism further includes an assist cylinder 3060. One end of the assist cylinder 3060 is hinged to the end of the rocker arm 3015 away from the first bushing, and the other end of the assist cylinder 3060 is adapted to be hinged to the housing 1010. The assist cylinder 3060 is used to provide an opening thrust for the rocker arm assembly, and the thrust is less than the resistance when the rocker arm assembly opens.

[0065] It should be noted that if the thrust provided by the conveying component to the material bag is too small to overcome the resistance when the swing arm component rotates, the swing arm component will not be able to be pushed and will remain on the conveying component, resulting in the inability to perform the cutting operation. Therefore, an assist cylinder 3060 is set up. While the material bag pushes the swing arm component, the assist cylinder 3060 pushes the swing arm component to help the material bag open the swing arm component, thus preventing the material bag from being stuck on the conveying component. Moreover, since the thrust of the individual assist cylinder 3060 to the swing arm component is less than the resistance when the swing arm component opens, it can still be ensured that the swing arm component is passively pushed open by the material bag, can still automatically adapt to the size of the material bag, and maintain a certain contact pressure between the cutting blade 3020 and the material bag to ensure the cutting effect.

[0066] like Figure 1 and Figure 2 As shown in the embodiment of the adaptive cutting device for unpacking machine provided in this utility model, the cutting mechanism further includes a stop block 3070, which is fixedly disposed and adapted to abut against the side of the rocker arm 3015 facing the tension component in the initial position. The initial position is the position of the rocker arm 3015 when no cutting operation is performed.

[0067] Specifically, the stop 3070 is made of polyurethane energy-absorbing material, which on the one hand restricts the position of the swing arm assembly, and on the other hand provides cushioning for the swing arm assembly during reset.

[0068] Furthermore, two stops 3070 are provided, which are respectively located on both sides of the rocker arm 3015 to limit the rotation angle of the rocker arm assembly.

[0069] like Figure 1 and Figure 2 As shown, in a specific embodiment of the adaptive cutting device for unpacking machine provided in this utility model, the cutting mechanism further includes a sensor 3080, which is fixedly installed to detect the position of the rocker arm 3015.

[0070] It should be noted that, initially, the rocker arm 3015 is close to the sensor 3080. When the material bag begins to push against the rocker arm assembly, the rocker arm 3015 rotates slightly, moving away from the sensor 3080. This rotation is detected by the sensor 3080, which sends a signal to activate the assist cylinder 3060, providing assistance to the material bag. Specifically, the sensor 3080 can be a proximity switch, or it could be a photoelectric sensor 3080, a micro switch, or any other sensor capable of detecting the rotation of the rocker arm 3015.

[0071] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adaptive cutting device for a bale opener, characterized in that, The cutting mechanism comprises two cutting mechanisms which are arranged in staggered mode and are adapted to be connected with the machine shell of the bale opener. The swing arm assembly is adapted to be connected with the machine shell at one end. The cutting blade is connected with the other end of the swing arm assembly. The driving assembly is connected with the cutting blade at the power output end and is used to drive the cutting blade to rotate. The tension assembly is connected with the swing arm assembly at one end and is adapted to be connected with the machine shell at the other end. The swing arm assemblies of the two cutting mechanisms are adapted to rotate in opposite directions and to be opened under the thrust of the material bag. The swing arm assembly comprises: The arm body is arranged horizontally. The first shaft sleeve is arranged vertically on the upper side of the arm body and is connected with one end of the arm body at the lower end. The second shaft sleeve is arranged vertically on the lower side of the arm body and is connected with the other end of the arm body at the upper end. The cutter shaft is arranged in the second shaft sleeve and is connected with the lower end of the cutter shaft. The swing arm assembly further comprises a rocker arm and a sleeve. The tension assembly is connected with the rocker arm at the end away from the first shaft sleeve.

2. The self-adapting cutting device for bale opener as claimed in claim 1, characterized in that, The cutting mechanism further comprises a booster cylinder. The booster cylinder is hingedly connected with the end of the rocker arm away from the first shaft sleeve at one end and is adapted to be hingedly connected with the machine shell at the other end. The booster cylinder is used to provide opening thrust for the swing arm assembly and the thrust is smaller than the resistance when the swing arm assembly is opened. The arm body is provided with a cavity.

3. The self-adapting cutting device for bale opener as claimed in claim 2, characterized in that, The driving assembly comprises: The transmission shaft is arranged in the first shaft sleeve and extends into the arm body at the lower end. The motor assembly is connected with the transmission shaft at the power output end and is used to drive the transmission shaft to rotate.

4. The self-adapting cutting device for bale opener as claimed in claim 1, wherein, The transmission assembly is arranged in the arm body, is connected with the transmission shaft at the power input end and is connected with the cutter shaft at the power output end.

5. The self-adapting cutting device for bale opener as claimed in claim 4, characterized in that, The transmission assembly comprises:

6. The self-adapting cutting device for bale opener as claimed in claim 1, characterized in that, The two synchronous pulleys are connected with the transmission shaft and the cutter shaft respectively.

7. The self-adapting cutting device for bale opener as claimed in claim 1, characterized in that, The synchronous belt is arranged on the two synchronous pulleys. The tension assembly comprises a spring. The tension assembly comprises a tension rod. The cutting mechanism further comprises a stopper. The stopper is fixedly arranged and is adapted to abut against the side of the rocker arm facing the tension assembly when the rocker arm is in the initial position. The cutting mechanism further comprises a sensor. The sensor is fixedly arranged and is used to detect the position of the rocker arm.

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