Cutting device for string and the like for incinerator hopper

Abstract

To provide a new cutting device for a string and the like, for an incinerator hopper.SOLUTION MECHANISM: A cutting device for a string and the like, which is a device for cutting a string and the like deviating from an opening of an incinerator hopper, comprises: a cutting device that cuts the string and the like; and a collecting device that collects the string and the like toward the cutting device; wherein the cutting device performs cutting with a shearing force such that a punch is inserted into and removed from a die.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a string cutting device for cutting strings that have come out of the opening of a hopper in a waste incinerator. [Background technology]

[0002] Waste is picked up from the waste pit by a crane and dumped into the hopper opening, where it is led into the incinerator and burned. However, waste such as string-like metal, plastic, paper, and cloth may not fit inside the hopper opening and may escape. Patent Document 1 describes a device that uses a chainsaw-type cutter to cut strings caught in a hopper, while Patent Document 2 describes a device that cuts strings by jetting ultra-high pressure water. However, strings come in a variety of materials, ranging from relatively hard materials such as metal to soft materials such as cloth. For example, cloth tends to wrap around the cutting blade, and hard metal materials are difficult to cut with a water jet, making them less suitable for stable cutting and maintenance. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-286499 [Patent Document 2] Japanese Patent Application Laid-Open No. 2000-343498 Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE INVENTION An object of the present invention is to provide a new string cutting device for an incinerator hopper that solves the problems of the prior art. [Means for solving the problem]

[0005] The string cutting device of the present invention is a device for cutting strings that have deviated from the opening of an incinerator hopper, and is characterized in that it has a cutting device that cuts the strings and a collecting device that gathers the strings toward the cutting device, and the cutting device cuts using shear force by inserting and removing a punch into a die.

[0006] In the present invention, the strings gathered by the collecting device on the upper surface of the die of the cutting device are sheared by a punch, and are cut and separated by shear deformation and destruction, also known as shear cutting. This makes it easier to prevent problems such as strings getting tangled in the cutting device, and makes it easier to cut strings stably even when they are made of a mixture of various materials. Also, unlike cutting processes, no cutting chips fly around, making it easier to clean and maintain the area around the device.

[0007] In the present invention, the die provided in the cutting device preferably has an auxiliary pin for guiding the inserting and removing direction of the punch. For example, the collection device may have a pair of pressing parts that move the strings in the left-right direction toward the die, a collection cover on the front-to-back outside of the pair of pressing parts, and a drive mechanism protected by the collection cover, and the punch in the cutting device may be inserted and removed between the pair of pressing parts while being guided by an auxiliary pin on the die. When a punch is inserted vertically into a die, for example, a punch having a generally rectangular parallelepiped shape extending in the left-right direction may be tilted so that its lower end portion escapes in the front-rear direction. In order to stably cut the string by shearing force, it is preferable that the punch is inserted at a right angle to the die. Therefore, for example, the auxiliary pin may be disposed so as to protrude from the front-rear direction (horizontal direction) relative to a through-hole that penetrates the die in the up-down direction (vertical direction). By arranging multiple auxiliary pins protruding from the front and rear directions in the through hole of the die, the outer surface of the lower end of the punch moves downward while being abutted and guided by the auxiliary pins, making it easier to prevent the punch from slipping out of position (shifting or tilting). In addition, since the collection device has a collection cover on the front-to-back outer side of the pair of pressing parts, the pressing parts can easily hook the strings placed on the collection cover and carry them toward the die, and by covering the drive mechanism and guide mechanism that drive the pressing parts with the collection cover, it is possible to prevent the intrusion of strings that would hinder their movement. Furthermore, by moving the punch of the cutting device between the pair of pressing parts, the pressing parts can approach without interfering with the insertion and removal of the punch into and from the die, making it easier to position the gathered strings between the punch and the die.

[0008] The method for cutting strings according to the present invention is characterized by comprising the steps of moving strings placed on a collecting device toward a die of a cutting device, and cutting the strings collected on the die using the shear force of the cutting device. [Effects of the Invention]

[0009] The string cutting device of the present invention uses a collection device to gather strings that have deviated from the hopper opening in a waste incinerator toward a cutting device, which then cuts them using the shearing force of the cutting device, making it easy to stably cut strings made of a variety of materials and making maintenance easy. [Brief explanation of the drawings]

[0010] [Figure 1] An example of the structure of a string cutting device is shown in (a) as a front view and (b) as a left side view. [Figure 2] The cutting device is shown in (a) as a front view, (b) as a plan view, and (c) as a left side view with the cutting cover removed. [Figure 3] An enlarged plan view of the die (die plate) is shown. [Figure 4] An enlarged front view of the die and punch is shown. [Figure 5] An example of the placement of a string cutting device in a waste incinerator is shown. DETAILED DESCRIPTION OF THE INVENTION

[0011] An example of the structure of a string cutting device according to the present invention will be described below with reference to the drawings.

[0012] FIG. 5 shows an example of the arrangement of the string cutting device 10 in a waste incinerator. Waste 2 is picked up by a crane 5 from a waste pit 4 and dumped into the opening 1a of the hopper 1, but at this time, some of the string-like or long waste 2 tends to slip out of the opening 1a, and in this specification, this slipped out part is referred to as string-like 3. The strings 3 are made of metal, plastic, paper, cloth, or other material, and specific examples include metal wires, plastic tapes, wrapping paper, futons, mats, and various other items. The string cutting device 10 is a device for cutting the string 3. For example, since the crane 5 moves directly above the waste pit 4 side of the opening 1a, the strings 3 tend to hang down, so a string cutting device 10 may be placed along the waste pit 4 side of the opening 1a.

[0013] FIG. 1(a) shows an example of the structure of a string cutting device 10. In the following description, the left-right direction in FIG. 1(a) is the longitudinal direction of the string cutting device 10. The string cutting device 10 has a cutting device 31 equipped with a punch 54 and a die 47 (die plate 46 ), and a collecting device 11 that gathers the strings 3 toward the cutting device 31 . The collecting device 11 and the cutting device 31 are connected in the left-right direction.

[0014] FIG. 1(b) shows a left side view of the collection device 11. The collecting device 11 has a pair of pressing parts 18, 18 that reciprocate in the left-right direction, and a collecting cover 22 on the outer side in the front-rear direction. In this embodiment, a support plate 13 having a width in the front-to-rear direction greater than that of the support frame 12 is fixed on a support frame 12 extending in the left-to-right direction, and a pressing drive unit 14 for driving a pressing unit 18 is disposed on one side (front side) of the support plate 13 in the front-to-rear direction. The pressing drive unit 14 is made up of a rodless cylinder or the like, and is provided with a slider 15 that can freely reciprocate along the longitudinal direction (left-right direction) of the support frame 12. A pressing portion 18 is connected to the slider 15 via connecting members (connecting bracket 16, connecting arm 17). Specifically, the front end 16a of the connecting bracket 16 is fixed to the slider 15, a connecting arm 17 is erected at the rear end 16b of the connecting bracket, and a pair of pressing portions 18, 18 are fixed approximately parallel to each other so as to sandwich the connecting arm 17. The slider 15 also has a guide rail 19 arranged parallel to the direction of movement thereof, and a guide slider 20 that moves on the guide rail 19, and the connecting bracket has a substantially central portion 16c fixed to the guide slider 20. As a result, the slider 15, the connecting bracket 16, the connecting arm 17, the pressing portion 18, and the guide slider 20 all move back and forth in the left and right directions while remaining substantially horizontal. The pressure drive unit 14 may be, for example, a unit that is driven by supplying compressed air, or may have an electric motor built in.

[0015] If the string 3 comes into contact with the drive mechanism (pressing drive unit 14, slider 15) or the guide mechanism (guide rail 19, guide slider 20), the reciprocating movement is hindered, and the movement of the pressing unit 18 is hindered. Therefore, the collection cover 22 is installed so as to cover the drive mechanism and the guide mechanism. Specifically, the collecting cover 22 has an upper wall 22a located approximately above the drive mechanism and the guide mechanism, and an inner wall 22b and an outer wall 22c connected to both front and rear ends of the upper wall 22a. In this embodiment, the upper wall 22a of the collecting cover is supported in contact with the cover bracket 21 disposed on the receiving plate 13, and the inner wall 22b faces the connecting arm 17 in the front-rear direction. In this case, the inner wall 22 b of the collection cover is disposed so that its lower end does not come into contact with the connecting bracket 16 .

[0016] The pressing part 18 is not particularly limited in shape as long as it can press the string 3 toward the cutting device 31 . This embodiment has a generally plate-like shape that extends in the left-right direction and has a thin width (thickness) in the front-rear direction, and has a pressing portion 18a that extends obliquely upward toward the cutting device 31 side as shown in FIG. 1(a). The string 3 moved in the left-right direction toward the cutting device 31 comes into contact with the pressing portion 18a and is prevented from escaping upward. Furthermore, since the lower end side of the pressing portion 18 is approximately the same height as the upper wall 22a of the collection cover, the pressing portion 18 can easily catch the string 3 placed on the upper wall 22a. In this embodiment, collection covers 22, 22 are arranged on both outer sides of a pair of pressing portions 18, 18 to make it easier to collect strings 3, but a collection cover to protect the drive mechanism, etc. may be provided on only one side, and the two collection covers 22, 22 may have different shapes as shown in Figure 1(b). Furthermore, by providing casters 23 and adjusters 24 at the bottom of the support frame 12, the collection device 11 can be easily moved along the floor F by using the rotation of the casters 23, and the support frame etc. can be easily kept approximately horizontal by adjusting the height with the adjusters 24.

[0017] An example of the structure of the cutting device 31 is shown in FIGS. 2(a) to 2(c) with the cutting covers (punch drive cover 38, die cover 41, guide cover 56) removed. The cutting device 31 has a die 47 (die plate 46 ) on the collecting device 11 side, and a punch 54 disposed above the die 47 and moving in a direction toward and away from the die 47 . In this embodiment, a base plate 32, a bottom frame 33, and multiple pillars 34 erected on the bottom frame 33 to support the base plate 32 function as the foundation of the cutting device 31, and the bottom of the bottom frame 33 has multiple casters 43 and adjusters 44 at the bottom, similar to the collection device 11.

[0018] The base plate 32 supports a die holder 45 , a die plate 46 , and a die 47 . FIG. 3 shows an enlarged plan view of the die 47 (die plate 46). The die plate 46 is configured to hold the die 47 in the approximate center, and has a through-hole 47b that penetrates in the up-down direction and has a generally rectangular shape in plan view that extends in the left-right direction. The die holder 45 supports a die plate 46 and a die 47, and the die holder 45 and the base plate 32 have discharge holes that communicate with the through-hole 47b. The die 47 preferably has an auxiliary pin that guides the inserting and removing direction of the punch 54. For example, a plurality of auxiliary pins 47a may be provided so as to protrude substantially horizontally from the front-rear direction toward the through-hole 47b. The outer surface (front and rear surfaces) of the lower end of the punch 54 contacts and is guided by the auxiliary pins 47a arranged in parallel in the left-right direction, so that the insertion and removal direction of the punch 54 relative to the through-hole 47b is stabilized.

[0019] The punch 54 has a generally rectangular parallelepiped shape extending in the left-right direction so as to be insertable into and removable from the through-hole 47b, and is fixed to one end (lower end) of the seesaw-shaped lever 53 on the collecting device 11 side as shown in FIG. The lever 53 is rotatably supported at its approximate longitudinal middle portion by a shaft bracket 51 provided on the die holder 45 so as to be parallel to the die plate 46 on the left and right sides, using a shaft 48, a washer 49, a bearing 50, etc. The other end 53a of the lever 53 is raised and lowered by the punch driving mechanism. As a result, the punch 54 is inserted into and removed from the through-hole 47b of the die, and the string 3 positioned between the punch 54 and the die 47 (die plate 46) is cut. Although there is no particular limitation on the punch driving mechanism, this embodiment has a punch driving section 35 (air cylinder or the like) that moves a driving rod 37 (cylinder rod) connected to a support frame 36 forward and backward. As shown in FIG. 1(a), this is an example having a punch drive cover 38 that protects the other end 53a of the lever and the drive rod 37 without interfering with their up and down movements.

[0020] The cut pieces of the string 3 cut by the punch 54 and the die 47 are discharged downward through the through-hole 47b and the discharge hole. In this embodiment, as shown in FIG. 2, a chute 39 is provided on a base plate 32 via a chute bracket 40, and a belt conveyor 42 is further disposed below the chute 39. As a result, the cut pieces are carried in one direction by the belt conveyor 42, making it possible to collect the cut pieces in one place and facilitating cleaning of the site. As shown in FIG. 1(a), a die cover 42 for protecting the die plate 46, the die holder 45, etc. may be attached.

[0021] The pressing portion 18 of the collecting device 11 moves longitudinally along the collecting cover 22 to collect the strings 3 and press the gathered strings 3 toward between the punch 54 and the die 47 (die plate 46) of the cutting device 31. If the direction in which this pressing part 18 moves towards the punch 54 and the die 47 is considered the direction of advancement, then the advancing pressing part 18 can move onto the die plate 46 as shown in Figure 2(a), making it easier to press the string 3 between the punch 54 and the die 47. At this time, as shown in FIG. 2(b), the punch 54 moves toward the through-hole 47b between the pair of pressing portions 18, 18 that are substantially parallel in the front-rear direction. As a result, the punch 54 can be inserted into and removed from the through-hole 47b without being hindered by the pressing portion 18. In this embodiment, a pair of stoppers 52, 52 are arranged on the die plate 46 along the direction of movement of the pair of pressing portions 18, 18. A stopper 52 positioned in front of the shaft bracket 51 allows the pressing portion 18 to stop without coming into contact with the shaft bracket 51 . As shown in FIG. 1(a), a guide cover 56 may be provided on the outer side of the stopper 52 in the front-rear direction. The lower end of the guide cover 56 extends obliquely downward in the direction of travel of the pressing portion 18, so that the gathered strings 3 are more likely to be positioned below the punch 54. [Explanation of symbols]

[0022] 1 Hopper 1a opening 3 Strings 10 String cutting device 11 Collection Device 18 Pressing part 22 Collection Cover 31 Cutting device 46 Die Plate 47 Die 47a Auxiliary pin 47b Through hole 54 Punch

Claims

1. A device for cutting strings that have come out of the opening of an incinerator hopper, A string cutting device for an incinerator hopper, comprising a cutting device for cutting strings and a collecting device for gathering the strings toward the cutting device, wherein the cutting device cuts strings by shear force caused by inserting and removing a punch into a die.

2. 2. The string cutting device for an incinerator hopper according to claim 1, wherein the die of the cutting device has an auxiliary pin for guiding the inserting and removing direction of the punch.

3. The string cutting device for an incinerator hopper as described in claim 2, characterized in that the collection device has a pair of pressing parts that move the string in the left-right direction toward the die, a collection cover on the front-to-rear outer side of the pair of pressing parts, and a drive mechanism protected by the collection cover, and the punch of the cutting device is inserted and removed between the pair of pressing parts while being guided by an auxiliary pin on the die.

4. 4. The string cutting device for an incinerator hopper according to claim 3, wherein the auxiliary pins are arranged so as to protrude from the front and rear directions relative to through holes that penetrate the die in the up and down direction.

5. A method for cutting strings using the string cutting device for an incinerator hopper described in any one of claims 1 to 4, characterized in that it comprises the steps of moving the strings placed on the collection device toward the die of the cutting device, and cutting the strings collected on the die using the shear force of the cutting device.

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