Bag breaking device

Abstract

To obtain a bag breaking device capable of stably breaking a bag while suppressing damage to the contents of the bag.SOLUTION: A compressor 52 compresses air. A regulator 56 adjusts the pressure of the compressed air supplied from the compressor 52. Then, a pressure control section 48A of a controller 48 controls the regulator 56 so that the pressure of the compressed air becomes a target pressure. Also, a temperature adjustment section 46 generates heat with energization of a coil 45 and adjusts the temperature of the compressed air supplied from the compressor 52 via the regulator 56 and such. Then, a temperature control section 48B of the controller 48 controls the temperature adjustment section 46 so that the temperature of the compressed air becomes a target temperature. The compressed air whose pressure is adjusted by the regulator 56 and whose temperature is adjusted by the temperature adjustment section 46 is sprayed from a nozzle section 44 toward an object 100 subject to bag breaking (see an Arrow A).SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a bag-breaking device.

Background Art

[0002] The following Patent Document 1 discloses a container-packaging separation device. Briefly explained, in this device, the bag can be melted by injecting a high-temperature fluid toward the bag containing garbage.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in this prior art, there is room for improvement in stably breaking the bag while suppressing damage to the contents of the bag.

[0005] In consideration of the above facts, an object of the present invention is to obtain a bag-breaking device capable of stably breaking a bag while suppressing damage to the contents of the bag.

Means for Solving the Problems

[0006] The bag-breaking device according to the first aspect includes a compressor that compresses air, a pressure adjustment unit that adjusts the pressure of the compressed air supplied from the compressor, a pressure control unit that controls the pressure adjustment unit so that the pressure of the compressed air becomes a target pressure, a temperature adjustment unit that is configured to generate heat by energization and adjusts the temperature of the compressed air supplied from the compressor, a temperature control unit that controls the temperature adjustment unit so that the temperature of the compressed air becomes a target temperature, and an injection unit that injects the compressed air whose pressure is adjusted by the pressure adjustment unit and whose temperature is adjusted by the temperature adjustment unit against a bag-breaking object.

[0007] According to the first embodiment of the bag-breaking device, a compressor compresses air. A pressure adjustment unit adjusts the pressure of the compressed air supplied from the compressor, and a pressure control unit controls the pressure adjustment unit so that the pressure of the compressed air reaches a target pressure. A temperature adjustment unit is configured to generate heat when energized, and adjusts the temperature of the compressed air supplied from the compressor, and the temperature control unit controls the temperature adjustment unit so that the temperature of the compressed air reaches a target temperature. The injection unit then injects the compressed air, whose pressure has been adjusted by the pressure adjustment unit and whose temperature by the temperature adjustment unit, onto the object to be broken. As a result, it becomes possible to inject compressed air at a speed and temperature that will break the object to be broken while minimizing damage to the contents of the object to be broken.

[0008] The bag-breaking device according to the second embodiment has a distance adjustment mechanism for adjusting the distance between the nozzle of the spray unit and the processing point of the object to be broken, in addition to the bag-breaking device according to the first embodiment.

[0009] In the bag-breaking device according to the second embodiment, the distance between the nozzle of the spray unit and the processing point of the object to be broken is adjusted by a distance adjustment mechanism. This makes it possible to suppress variations in the velocity and temperature of the compressed air at the time it reaches the object to be broken.

[0010] A bag-breaking device according to a third embodiment is a bag-breaking device according to a second embodiment, comprising: a conveyor for transporting the object to be broken; and a roller which constitutes part of the distance adjustment mechanism and is provided to be vertically movable integrally with the spraying unit, and which is arranged to rotate and displace in accordance with the shape of the upper surface of the object to be broken that is transported on the conveyor.

[0011] According to the third embodiment of the bag-breaking device, the object to be broken is transported by a conveyor. A roller, which is provided to be vertically movable integrally with the spray unit, is positioned to rotate on the upper surface of the object to be broken as it is transported on the conveyor, and to displace in accordance with the shape of the upper surface. Therefore, even if the position of the object to be broken changes due to transport, variations in the distance between the spray nozzle of the spray unit and the processing point of the object to be broken are suppressed. Thus, simply by placing the object to be broken on the conveyor, it becomes possible for the spray unit to spray compressed air onto the object from an appropriate position. [Effects of the Invention]

[0012] As described above, the present invention has the excellent effect of enabling stable tearing of bags while minimizing damage to the contents of the bags. [Brief explanation of the drawing]

[0013] [Figure 1] This is a perspective view showing a bag-breaking device according to the first embodiment. [Figure 2] Figure 1 is a side view showing the bag-breaking device as seen from the side of the device. [Figure 3] This is a schematic diagram illustrating the basic configuration of a heat gun in a simplified manner. [Figure 4] This is a schematic diagram showing a simplified configuration of the heat gun body and part of the distance adjustment mechanism. [Figure 5] This graph illustrates the range in which the desired effect can be obtained when compressed air is sprayed from a heat gun at a predetermined speed onto a bag-breaking target object. [Figure 6] This is a schematic diagram showing a simplified configuration of the heat gun body and a part of the distance adjustment mechanism of the bag-breaking device according to the second embodiment. [Modes for carrying out the invention]

[0014] [First Embodiment] A bag-breaking device according to the first embodiment of the present invention will be described with reference to Figures 1 to 5. Figure 1 shows a perspective view of the bag-breaking device 10 according to this embodiment, and Figure 2 shows a side view of the bag-breaking device 10.

[0015] The bag-breaking device 10 shown in Figures 1 and 2 is installed in an intermediate waste treatment plant. Waste generated by businesses and other entities is brought to the intermediate waste treatment plant in bags (e.g., rubble bags, sandbags, etc.). At the intermediate waste treatment plant, the bags containing the waste are broken open to remove the waste contents. The removed waste is then transported to a final treatment facility (a recycling facility or an incineration / landfill). In the following explanation, the bags containing the waste are referred to as the bag-breaking target 100.

[0016] As shown in Figure 1, the bag-breaking device 10 has a conveyor 12 for transporting the bag-breaking target object 100. The conveyor 12 is, for example, a roller conveyor composed of a drive roller 14, a driven roller 15, and an endless belt 16. A motor 18 is connected to the shaft of the drive roller 14. The motor 18 rotates the endless belt 16 by rotating the drive roller 14. In the figure, the transport direction of the conveyor 12 is indicated by the arrow X.

[0017] The bag-breaking device 10 has a device frame 20. The device frame 20 includes a lower frame 22 provided on the lower side of the middle portion of the conveyor 12 in the conveying direction, and a side frame 24 provided on one side of the conveyor 12. The lower part of the side frame 24 is fixed to the lower frame 22. The side frame 24 is composed of a first column member 24A and a second column member 24B arranged along the conveying direction of the conveyor 12, a connecting member 24C connecting the upper part of the first column member 24A and the upper part of the second column member 24B, and a plurality of reinforcing members 24D. The first column member 24A is positioned upstream of the second column member 24B in the conveying direction of the conveyor 12.

[0018] Further, a first horizontal member 26A disposed above the conveyor 12 is fixed to the upper portion of the first column member 24A, and a second horizontal member 26B disposed above the conveyor 12 is fixed to the upper portion of the second column member 24B. Both the first horizontal member 26A and the second horizontal member 26B extend along the conveyance width direction of the conveyor 12.

[0019] The base end portion of the rotating arm 30 is attached to the first horizontal member 26A via a pair of mounting brackets 28 arranged in a direction parallel to the conveyance width direction of the conveyor 12. The rotating arm 30 is attached to the pair of mounting brackets 28 so as to be rotatable (see the arrow R in FIG. 2) about an axis in a direction parallel to the conveyance width direction of the conveyor 12.

[0020] The heat gun main body 40H constituting the main body of the heat gun 40 is fixed to the tip end portion of the rotating arm 30 via a pair of mounting brackets 32 arranged in a direction parallel to the conveyance width direction of the conveyor 12. The heat gun main body 40H is arranged to inject compressed air against the object 100 to be bag - broken.

[0021] FIG. 3 shows a simplified basic configuration of the heat gun 40. As shown in FIG. 3, the heat gun main body 40H in the heat gun 40 includes a cylindrical portion 42, a nozzle portion 44 as a metal injection portion having most of it disposed inside the cylindrical portion 42 and the tip end portion protruding from the tip end of the cylindrical portion 42, and a coil (also referred to as an induction heating coil) 45 wound around the outer periphery of the nozzle portion 44 inside the cylindrical portion 42. In FIG. 3, a part of the cylindrical portion 42 is cut away to illustrate the inside of the cylindrical portion 42 for easy understanding of the configuration of the heat gun main body 40H. An injection port 44A is formed at the tip end portion of the nozzle portion 44. The injection direction from the injection port 44A is set along the extension direction from the injection port 44A side of the linear nozzle portion 44 (see the arrow A).

[0022] In this embodiment, the temperature control unit 46 is configured including a coil 45 and a nozzle unit 44. A controller 48 is connected to the coil 45, and an AC power supply PS is connected to the controller 48. The AC power supply PS supplies power to the controller 48. The controller 48 is supported by a support plate 23 (see Figure 1) on the lower frame 22 shown in Figure 2. The controller 48 is equipped with an input screen 48S, which allows the user to arbitrarily input predetermined information corresponding to the object to be ruptured 100 (for example, information on the pressure value and voltage value of compressed air, which will be described later). The controller 48 is configured to apply an AC voltage of the voltage value input by the user to the coil 45 shown in Figure 3, in response to the user's operation. The temperature control unit 46 is a component capable of heating using electromagnetic induction, and is configured to generate heat when current is supplied to the coil 45.

[0023] Furthermore, a compressed air supply unit 50 is connected to the nozzle unit 44. The compressed air supply unit 50 includes a compressor 52 for compressing air, piping 54 for connecting the compressor 52 and the nozzle unit 44, and a regulator 56 provided in the middle of the piping 54 as a pressure adjustment unit for adjusting the pressure of the compressed air supplied from the compressor 52. Note that a portion of the piping 54 passes through the rotating arm 30 (see Figure 1). The regulator 56 is connected to the controller 48.

[0024] The controller 48 outputs the compressed air pressure value input by the user to the regulator 56, and the regulator 56 adjusts the compressed air supplied from the compressor 52 to the aforementioned pressure value before supplying it to the nozzle unit 44. In addition, the aforementioned temperature adjustment unit 46 is capable of adjusting the temperature of the compressed air supplied from the compressor 52 to the nozzle unit 44 via the regulator 56, and the temperature adjustment by the temperature adjustment unit 46 is controlled by the controller 48.

[0025] In other words, the controller 48 has a functional configuration that includes a pressure control unit 48A that controls the regulator 56 so that the pressure of the compressed air reaches a target pressure (the pressure value of the compressed air input by the user), and a temperature control unit 48B that controls the temperature adjustment unit 46 so that the temperature of the compressed air reaches a target temperature (the temperature corresponding to the voltage value input by the user). Furthermore, the nozzle unit 44 described above is configured to spray compressed air, whose pressure has been adjusted by the regulator 56 and whose temperature has been adjusted by the temperature adjustment unit 46, onto the object to be ruptured 100.

[0026] As shown in Figure 2, the bag-breaking device 10 has a distance adjustment mechanism 60 to adjust the position of the heat gun body 40H. Figure 4 shows a simplified schematic diagram of the heat gun body 40H and a part of the distance adjustment mechanism 60. The distance adjustment mechanism 60 shown in Figure 4 is a mechanism that adjusts the distance L between the nozzle 44A of the nozzle part 44 of the heat gun body 40H and the processing point 100X of the object to be broken 100. The processing point 100X of the object to be broken 100 is a part of the object to be broken 100 that is to be broken by the injection of compressed air from the nozzle part 44.

[0027] The distance adjustment mechanism 60 includes a rotating arm 30, and is equipped with a roller 62 attached to the tip of the rotating arm 30 via a roller bracket 61. The roller 62 is positioned below the tip of the rotating arm 30, maintaining its relative position to the rotating arm 30, and is rotatable around an axis parallel to the conveying width direction of the conveyor 12 (see Figure 2). In other words, the roller 62 is provided to move up and down integrally with the nozzle portion 44 of the heat gun body 40H, and is positioned to rotate and displace in accordance with the shape of the upper surface 100A of the bag-breaking object 100 that is placed on the conveyor 12 (see Figure 2).

[0028] As shown in Figure 1, a leveling section 34 is provided on the upstream side of the conveying direction of the conveyor 12 relative to the roller 62 to smooth out the unevenness of the upper surface 100A of the object to be broken 100. The leveling section 34 can also be called a skirt section and is attached to the lower end of the rotating arm 30. When viewed along the longitudinal direction of the rotating arm 30, it is formed in a roughly horizontal U-shape as an example. The amount of protrusion of the leveling section 34 from the rotating arm 30 increases towards the tip of the rotating arm 30. By providing the leveling section 34, for example, when a part of the upper surface 100A of the object to be broken 100 is greatly raised (not shown), the vertical movement of the roller 62 when the position of the object to be broken 100 being conveyed on the conveyor 12 changes is suppressed, and furthermore, it is possible to suppress the rapid change in the vertical position of the processing point of the object to be broken 100 that receives compressed air from the heat gun 40.

[0029] Furthermore, a small roller 36 is provided on the downstream side of the conveying direction of the conveyor 12 relative to the roller 62, for the smooth passage of the contents of the torn bagged object 100. The small roller 36 is attached to the mounting bracket 32 ​​via a roller bracket 35 and is rotatable around an axis parallel to the conveying width direction of the conveyor 12. This small roller 36 has a smaller diameter than the roller 62 and is designed to contact the upper surface of the contents of the torn bagged object 100 when the upper surface is at a high position.

[0030] Meanwhile, the tip of the rotating arm 30 is connected to a balancer 38 located above it. The balancer 38 is fixed to the second horizontal member 26B via a mounting member 29 and assists the rotating arm 30 so that it can rotate with a low load. The balancer 38 comprises a main body 38A fixed to the mounting member 29 and a hanging part 38B hanging down from the main body 38A. The lower end of the hanging part 38B is attached to the tip of the rotating arm 30. In addition, a wire winder (not shown) is provided inside the main body 38A that constantly biases the wire 38W, which constitutes part of the hanging part 38B, in the winding direction. Note that a known configuration can be used for the balancer 38.

[0031] Next, the operation and effects of this embodiment will be described.

[0032] In this embodiment, the compressor 52 shown in Figure 3 compresses air. The regulator 56 adjusts the pressure of the compressed air supplied from the compressor 52. Here, the pressure control unit 48A of the controller 48 controls the regulator 56 so that the pressure of the compressed air becomes the target pressure (the pressure value of the compressed air input by the user to the controller 48). The temperature control unit 46 generates heat by energizing the coil 45 and adjusts the temperature of the compressed air supplied from the compressor 52 via the regulator 56, etc. Here, the temperature control unit 48B of the controller 48 controls the temperature control unit 46 so that the temperature of the compressed air becomes the target temperature (the temperature corresponding to the voltage value input by the user to the controller 48).

[0033] Compressed air, whose pressure is adjusted by the regulator 56 and whose temperature is adjusted by the temperature adjustment unit 46, is sprayed from the nozzle unit 44 onto the object to be ruptured 100 (see arrow A). This makes it possible to spray compressed air at a speed and temperature that will rupture the object to be ruptured 100 while minimizing damage to its contents. If the object to be ruptured 100 is something that is easily ruptured, such as a plastic bag, it is possible to rupture the bag even at a relatively low temperature by increasing the pressure of the compressed air (in other words, by spraying the compressed air at a high speed). A relatively low temperature of compressed air is advantageous in terms of safety and workability.

[0034] Furthermore, in this embodiment, as shown in Figure 4, the distance L between the nozzle 44A of the nozzle portion 44 of the heat gun body 40H and the processing point 100X of the object to be ruptured 100 is adjusted by the distance adjustment mechanism 60. This makes it possible to suppress variations in the velocity and temperature of the compressed air when it reaches the object to be ruptured 100.

[0035] Furthermore, in this embodiment, the object to be broken 100 is transported by a conveyor 12 (see Figure 1, etc.). A roller 62, which constitutes part of the distance adjustment mechanism 60 and is provided to be vertically movable integrally with the nozzle 44, is positioned to rotate on the upper surface 100A of the object to be broken 100 as it is transported on the conveyor 12 (see Figure 1, etc.), and to displace in accordance with the shape of the upper surface 100A. Therefore, even if the position of the object to be broken 100 changes due to transport, variations in the distance L between the nozzle 44A of the nozzle 44 and the processing point 100X of the object to be broken 100 are suppressed. Thus, simply by placing the object to be broken 100 on the conveyor 12 (see Figure 1, etc.), it becomes possible for the heat gun 40 to spray compressed air onto the object to be broken 100 from an appropriate position. As a result, the work time required to break the object to be broken 100 can be shortened compared to conventional methods. In Figure 1, the symbol B represents a simplified example of a portion of the bag-breaking object 100 that was torn by compressed air sprayed from the heat gun 40.

[0036] Here, we will provide a supplementary explanation, with reference to Figure 5, of an example of the relationship between the temperature setting of the compressed air sprayed from the heat gun 40, the distance L between the nozzle 44A of the heat gun body 40H shown in Figure 4 and the processing point 100X of the object to be ruptured 100, and the effect of spraying compressed air from the heat gun 40. Figure 5 is a graph illustrating the range in which the desired effect can be obtained when compressed air is sprayed from the heat gun 40 at a predetermined speed onto a certain object to be ruptured. The horizontal axis shows the set temperature of the compressed air to be sprayed, and the vertical axis shows the distance L between the nozzle 44A of the heat gun body 40H and the processing point 100X of the object to be ruptured 100.

[0037] In Figure 5, the only area where the bag to be torn can be ruptured without causing excessive damage to the contents inside the bag to be torn is the band-shaped region M. In Figure 5, in the area above the band-shaped region M, the bag to be torn cannot be ruptured, and the effect on the bag to be torn decreases as you move in the direction of arrow Z1. Also, in Figure 5, in the area below the band-shaped region M, the bag to be torn can be ruptured, but it causes excessive damage to the contents inside the bag to be torn, and the damage to the contents inside the bag to be torn increases as you move in the direction of arrow Z2. For this reason, it is necessary to adjust the distance L between the nozzle 44A of the nozzle part 44 of the heat gun body 40H shown in Figure 4 and the processing point 100X of the bag to be torn 100, and to control the temperature of the compressed air sprayed from the heat gun 40, but in this embodiment, it is possible to do so well.

[0038] As described above, this embodiment makes it possible to reliably tear a bag while minimizing damage to its contents.

[0039] [Second Embodiment] Next, a bag-breaking device 70 according to a second embodiment of the present invention will be described with reference to Figure 6. Figure 6 shows a simplified schematic diagram of the heat gun body 72H (body of the heat gun 72) and a part of the distance adjustment mechanism 60 of the bag-breaking device 70 according to the second embodiment. As shown in Figure 6, the bag-breaking device 70 according to the second embodiment differs from the bag-breaking device 10 according to the first embodiment (see Figures 1 to 4) in that it is equipped with a nozzle 74 as a spraying part instead of the nozzle part 44 (see Figures 3 and 4) of the first embodiment. The other configurations are the same as those of the first embodiment. Therefore, components that are substantially the same as those of the first embodiment in the second embodiment are denoted by the same reference numerals and their description is omitted.

[0040] The nozzle section 74 of the heat gun body 72H sprays compressed air onto the object to be ruptured 100. The nozzle section 74 includes a first nozzle 74A facing diagonally downward on the upstream side in the conveying direction of the conveyor 12, and a second nozzle 74B facing diagonally downward on the downstream side in the conveying direction of the conveyor 12. Except for the configuration of the tip section, the nozzle section 74 is substantially the same as the nozzle section 44 of the first embodiment (see Figures 3 and 4). When viewed from the conveying width direction of the conveyor 12, the spray direction from the first nozzle 74A is aligned with the longitudinal direction of the heat gun body 72H, and the angle between the spray direction from the first nozzle 74A and the spray direction from the second nozzle 74B is set to 90° as an example.

[0041] According to the bag-breaking device 70 of the second embodiment, the nozzle section 74 injects compressed air from the first nozzle 74A diagonally downward on the upstream side in the conveying direction of the conveyor 12 (see dashed arrow A1), and injects compressed air from the second nozzle 74B diagonally downward on the downstream side in the conveying direction of the conveyor 12 (see dashed arrow A2). For example, if the objects to be broken 100 are placed on the conveyor 12 at intervals, not only can the upper surface 100A of the objects to be broken be broken by the compressed air injected from the nozzle section 74, but the roller 62 falls from the downstream side in the conveying direction of the upper surface 100A of the objects to be broken 100, so that the downstream side (rear surface) 100B of the objects to be broken 100 can be broken by the compressed air injected from the second nozzle 74B.

[0042] [Supplementary explanation of the embodiment] Furthermore, the bag-breaking devices 10 and 70 of the first and second embodiments shown in Figures 1 to 6 have a conveyor 12 for transporting the bag-breaking target 100, and such a configuration is preferred, As an example of an embodiment of the present invention, It is also possible to adopt a configuration in which the bag-breaking device does not have a conveyor belt.

[0043] Furthermore, the bag-breaking devices 10 and 70 of the first and second embodiments described above have a distance adjustment mechanism 60. Therefore, this configuration is preferable, As an example of an embodiment of the present invention,It is also possible to adopt a configuration in which the bag-breaking device does not have a distance adjustment mechanism.

[0044] Furthermore, in the bag-breaking devices 10 and 70 of the first and second embodiments described above, the distance adjustment mechanism 60 is configured to include a roller 62, As an example of an embodiment of the present invention, As a variation, for example, a detection unit is provided to detect the position of the processing point of the object to be ruptured, and the distance adjustment mechanism is equipped with a mechanism that can adjust the position of the nozzle opening of the nozzle unit (injection unit) without rollers, and the distance between the nozzle opening of the nozzle unit (injection unit) and the processing point of the object to be ruptured is adjusted based on the detection result of the detection unit.

[0045] Furthermore, in the bag-breaking devices 10 and 70 of the first and second embodiments described above, the temperature control unit 46 is configured to include a coil 45. However, as a modification of the above embodiments, the temperature control unit may be configured to generate heat by energizing without including a coil, for example, by including a ceramic heater that generates heat by energizing without including a coil.

[0046] Furthermore, in the bag-breaking devices 10 and 70 of the first and second embodiments described above, information such as the pressure value and voltage value of compressed air can be input to the input screen 48S of the controller 48. However, it is also possible to adopt a configuration in which, for example, current value information can be input instead of voltage value information, and the temperature control unit (48B) controls the temperature adjustment unit (46) so that the temperature of the compressed air reaches a temperature (target temperature) corresponding to the current value input by the user.

[0047] Furthermore, the first and second embodiments described above, as well as the various modifications described above, can be combined and implemented as appropriate.

[0048] Although an example of the present invention has been described above, the present invention is not limited to the above, and it is of course possible to implement it in various ways without departing from its spirit. [Explanation of symbols]

[0049] 10 Bag breaking device 12 Conveyor 44. Nozzle section (spray section) 44A injection port 46 Temperature adjustment section 48A Pressure Control Unit 48B Temperature Control Unit 52 Compressor 56. Regulator (pressure adjustment unit) 60 Distance adjustment mechanism 62 Laura 70 Bag breaking device 74. Nozzle section (spray section) 74A First injection port (injection port) 74B Second injection port (injection port) 100 Items to be broken 100A Top surface of the object to be broken 100X processing point L Distance between the nozzle opening and the processing point of the object to be ruptured (distance between the nozzle opening and the processing point of the object to be ruptured)

Claims

[Claim 1] A compressor that compresses air, A pressure adjustment unit that adjusts the pressure of the compressed air supplied from the compressor, A pressure control unit controls the pressure adjustment unit so that the compressed air pressure reaches the target pressure, A temperature control unit configured to generate heat when power is applied, which adjusts the temperature of the compressed air supplied from the compressor, A temperature control unit controls the temperature adjustment unit so that the temperature of the compressed air reaches the target temperature, A spray unit that sprays compressed air, whose pressure is adjusted by the pressure adjustment unit and whose temperature is adjusted by the temperature adjustment unit, onto the object to be ruptured. A distance adjustment mechanism for adjusting the distance between the nozzle of the injection unit and the processing point of the object to be ruptured, A conveyor for transporting the aforementioned bagged object, It has, The distance adjustment mechanism comprises a roller that is integrally provided with the spraying section so as to be able to move up and down, and the roller is arranged to rotate and displace in accordance with the shape of the upper surface of the object to be broken, which is carried on the conveyor.

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