JP5457713B2 - Cutting blade regeneration method and equipment - Google Patents

Description

  The present invention relates to a method for regenerating a cutting blade used in a shearing crusher and the like, and a regenerating facility for the method.

  Conventionally, a shearing type crusher that shears and crushes solid objects to be crushed such as plastic, wood pieces, paper, metal, rubber, fibers, and leather is known. For example, as this type of shearing crusher, there is a shearing crusher previously filed by the present applicant (see Patent Document 1).

  As shown in the plan view of the shearing crusher in FIG. 18 and the XIX-XIX cross-sectional view in FIG. 18 of FIG. 19, this shearing crusher 100 includes a plurality of shear crushers 100 in the axial direction of the rotating shafts 101 and 102. The rotary blades 103 are alternately provided with the spacers 104 therebetween. The spacer 104 positions and fixes the rotary blade 103 in the axial direction, and is formed with an outer diameter capable of positioning the base portion of the rotary blade 103 in the axial direction.

  These rotary blades 103 have a blade base portion 106 fixed to the rotary shafts 101 and 102 and a split type cutting blade 105 fixed so as to surround the periphery of the blade base portion 106. Then, between the side surfaces of the rotary blade 103 that rotates in the rotation direction R, for example, an axial clearance of about 0.5 mm to 1 mm is provided, and the cutting blades 105 are arranged so as to be engaged with each other. Has been. The cutting blade 105 provided on the outer periphery of the rotary blade 103 pulls the object 120 to be crushed and crushes the object 120 to be crushed by a shearing action between the rotating blade 103 and the opposing blade 120.

  Further, an engagement step portion 107 is provided on the mounting surface of the cutting blade 105 and is engaged with an engagement protrusion 108 provided on the blade base portion 106 so as to receive a crushing reaction force. The split-type cutting blade 105 includes a tip edge portion 109 that is pointed in the rotation direction of the blade tip portion that protrudes outward, and a side edge portion 110 (side edge) along a side profile, and is sheared and crushed. By making the cutting blade 105 provided with these edge portions 109 and 110 that wear early due to the split type, only the cutting blade 105 can be replaced even if worn. In the following description, the split type cutting blade 105 will be mainly described.

  By the way, the cutting blade 105 in this type of shearing crusher draws and crushes the object to be crushed at the leading edge portion 109 and shears and crushes at the leading edge portion 109 and the side edge portion 110. The part 109 and the side edge part 110 are prematurely worn.

  As this early wear, the tip edge portion 109 and the side edge portion 110 are worn in a round shape. When this wear occurs, the crushing performance is lowered and the crushing efficiency is lowered. In addition, depending on the object to be crushed, the edge portions 109 and 110 may be damaged, and even if this defect occurs, the crushing performance is lowered and the crushing efficiency is lowered. Therefore, in the case where such wear / deficiency occurs (in the specification and claims documents, these “wear” and “deficiency” are collectively referred to as “wear”), Each time, a new cutting blade 105 is replaced.

  However, a plurality of such cutting blades 105 are used in one crushing machine, and in particular, in a crushing machine that employs the above-described split-type cutting blade 105, for example, one unit has several tens of pieces. A single cutting blade 105 is used, which requires a lot of cost for replacement.

  In addition, such a cutting blade 105 is entirely made of an expensive material such as alloy tool steel in order to improve wear resistance, and a shearing type in which many cutting blades 105 are used as described above. In the case of a crusher, it is very expensive to replace all of the cutting blades 105 with new ones. Also, it does not make effective use of resources.

  Therefore, as this type of prior art, the present applicant, for example, formed the base material portion (central base metal portion) from inexpensive carbon steel or the like, and formed the surface portion such as the tip edge portion of the blade edge portion with wear resistance / An invention was first filed for an invention in which a special powder alloy layer having excellent impact properties and the like was formed to extend the life of the blade edge (see Patent Document 2). However, in order to form a part of the cutting blade 105 with the special powder alloy layer as in the present invention, manufacturing equipment, processing work, etc. may be expensive, and realization is difficult.

JP-A-8-323232 Japanese Patent No. 2851000

  By the way, as described above, since it is very expensive to replace all of the worn cutting blades 105 with new ones, a build-up welding material is build-up welded to the edge portion of the cutting blades 105 that are worn out. There is an idea to recycle the build-up welded portion into edge portions 109 and 110 to reuse the cutting blade 105 itself.

  However, in such regeneration, the quality and condition of the build-up welding differ depending on the skill level of the operator, and it is difficult to maintain a stable quality due to a difference in the finish. Moreover, since it takes a very long time to regenerate a large number of cutting blades 105, realization is difficult.

  On the other hand, if the edge portion of the cutting blade 105 is reproduced by an automatic machine, the edge portion shape of the cutting blade 105 is pointed in the rotation direction of the blade edge portion protruding outward, and the tip edge portion. 109 is formed by a curved side edge portion 110 that is continuous with 109, and therefore, when such a portion of the edge portion is worn away, automatic build-up welding by an automatic machine is performed at that portion. A trouble that stops (hereinafter referred to as “chocolate stop”) occurs, and the equipment stops until the current state is restored by restarting or the like to resume automatic overlay welding, and the production efficiency is lowered. However, in the regeneration of the cutting blade 105, there is no effective measure for preventing this “chocolate stop”.

  Therefore, an object of the present invention is to provide a cutting blade regenerating method and a regenerating facility that can efficiently regenerate a cutting blade with worn edge portions with stable quality.

In order to achieve the above object, a cutting blade regenerating equipment according to the present invention includes a cutting edge portion that protrudes outward from a fixed portion, the cutting edge portion having a tip edge portion that is pointed in the rotational direction, and the cutting edge part a reproducing equipment for reproducing the edge portion of the cutting blade having a side edge portion on the side surface outer edge including the mobile, and unloading machine which transferred into and out of the pre-Symbol cutting blade, the cutting blade which is carried by該搬input and machine A handling robot, a preheater that preheats the cutting blade to a predetermined temperature, a multi-axis holding machine that holds the cutting blade preheated by the preheater and displaces the cutting blade to a predetermined welding posture, An automatic welding machine that automatically and continuously welds a build-up welding material with a welding torch to the edge of the cutting blade according to the posture of the cutting blade displaced by a shaft holder, and build-up welding with the automatic welding machine a heat machine after the post heat treatment of the cutting blade at a predetermined temperature, the The cutting blade is transported to the preheater and preheated, and after the preheat treatment, it is transported and held by the multi-axis holder, and the edge is displaced by the automatic welder while being displaced by the multi-axis holder. And a control device that carries out post-heat treatment after the build-up welding and transports to the post-heater, and the multi-axis holding machine has a downward welding position with respect to the edge portion of the cutting blade during the build-up welding The automatic welding machine has a function of displacing the cutting blade so as to be in a welding and a front-up welding position, and the automatic welding machine works downward and forwards in cooperation with the displacement of the cutting blade by the multi-axis holding machine. The welding torch is displaced so as to be in the welding posture, and the welding torch is configured to be a welding robot having a function of continuous build-up welding from one end portion to the other end portion of the edge portion . “Continuous automatic build-up welding” in the specification and claims refers to continuous welding from one end of the edge portion to the other end. As a result, the repairable cutting blade is moved to the preheating machine by the handling robot and preheated, and then held by the multi-axis holding machine. Since the material is welded to the edge portion and post-heat treated by a post-heater, the cutting blade can be regenerated by regenerating the build-up welded portion of the post-heat treated cutting blade into a predetermined edge portion. In addition, by performing automatic build-up welding, it is possible to regenerate the edge portion with stable quality.

Furthermore, during the build-up welding of the cutting blade, it is possible to carry out stably in a downwardly upward posture so that build-up welding of the hard build-up welding material can be performed stably.

In addition, the automatic welding machine cooperates with the displacement of the cutting blade by the multi-axis holding machine and displaces the welding torch so that the welding posture is downward and upward, so that stable build-up welding of the cutting blade can be performed. It can be carried out.

The handling robot may have a function of holding and holding a flax stub on the anti-automatic welding machine side during the overlay welding of the edge portion by the automatic welding machine. In this way, build-up welding can be performed in which the edge of the anti-automatic welding machine side of the edge portion becomes a flat surface with a tab, so that processing after build-up welding can be simplified.

On the other hand, the method for regenerating a cutting blade according to the present invention comprises a cutting edge portion protruding outward from a fixed portion by the regenerating equipment, the cutting edge portion having a tip edge portion that is pointed in the rotation direction, and the cutting edge portion a reproduction method for reproducing an edge portion of the cutting blade having a side edge portion on the side surface outer edge comprising a chamfering step of performing a predetermined chamfer the edge portion of the front SL cutting blade, the cutting blade was chamfered a preheating step of preheating treatment at a predetermined temperature, an edge portion is performed chamfer cutting blade treated preheating cooperates displacement and of the cutting blade by multiaxial holding device, and welding position downward and in front up and buildup welding step of automatically overlay clad of the welding torch is displaced from the one end toward the other end of the edge portion hardfacing welding material continuously so that the cutting blade has been welded the padding a thermal process after the post heat treatment at a predetermined temperature, the rear heat Wherein the sequentially performed and processing step of reproducing processing the overlay clad portion of the physical and cutting blades in a predetermined edge portion. In this way, after chamfering the edge part of the cutting blade that can be repaired , pre-heat treatment is performed, and build-up welding of the hard build-up welding material is performed by automatic build-up welding. parts to be reproduced the reproduction processing to the cutting blade can Rukoto. In addition, by performing automatic build-up welding, it is possible to obtain a cutting blade in which the quality of the regenerated edge portion is stable .

In addition, after the build-up welding process, an inspection process for inspecting the suitability of the build-up state of the build-up welding is performed, and a correction process for performing appropriate build-up welding on the build-up portion determined to be inappropriate in the inspection process You may make it perform. In this way, even when there is not enough build-up at the missing part or the like, the build-up amount can be confirmed by inspection and the cutting blade can be corrected in a preheated state.

Further, after the build-up welding process, after performing a build-up welding of the tip edge portion by applying a tab to the lower surface of the tip edge portion sharpened in the rotation direction of the cutting edge portion protruding outward of the cutting blade by a robot Further, overlay welding may be performed on the side edge portion. If it does in this way, the bottom surface of the build-up welding of the sharp part of the tip edge part can be finished to a plane with a tab, and the plane of the part to which the tab is applied can also be maintained by welding of the side edge part thereafter. Therefore, the processing after build-up welding can be simplified.

Further, the cutting blade may be moved by a robot during the preheating step, the build-up welding step, and the post-heating step. In this way, even if the edge portion is a cutting blade having a complicated shape, the cutting blade can be quickly and stably moved from the pre-heat treatment before automatic welding to the post-heat treatment after automatic welding.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to reproduce | regenerate the cutting blade with which the edge part was worn | worn efficiently, it becomes possible to stabilize the quality of the reproduced | regenerated cutting blade. This also makes it possible to greatly reduce the running cost of the cutting blade in the shearing crusher.

It is a top view which shows the reproduction | regeneration equipment which concerns on one embodiment of this invention. It is drawing of the handling robot of the reproduction | regeneration equipment shown in FIG. 1, (a) is a side view, (b) is a II arrow view shown to (a). It is drawing which shows the multiaxial holding machine of the reproduction | regeneration equipment shown in FIG. 1, (a) is a top view, (b) is a side view. It is a side view which shows the automatic welding machine of the reproduction | regeneration equipment shown in FIG. It is a flowchart which shows the outline of the reproduction | regeneration method of the cutting blade by the reproduction | regeneration equipment shown in FIG. It is a perspective view which shows the state which moved the cutting blade to the preheater at the time of the preheat treatment of the flowchart shown in FIG. It is a perspective view which shows the state which hold | maintained the cutting blade after the pre-heat treatment of the flowchart shown in FIG. 5 in the multiaxial holding machine. It is drawing which shows the state which welds the front-end | tip edge part of the cutting blade at the time of build-up welding of the flowchart shown in FIG. 5, (a) is a perspective view, (b) is a side view. (a)-(c) is a perspective view which shows the procedure at the time of the welding of the front-end | tip edge part shown in FIG. It is a perspective view which shows the state which welds the side edge part of the cutting blade at the time of build-up welding of the flowchart shown in FIG. (a), (b) is a perspective view which shows the procedure at the time of the welding of the side edge part shown in FIG. It is a perspective view which shows the state which welds the side edge part different from the side edge part shown in FIG. It is a perspective view which shows the procedure at the time of the welding of the side edge part shown in FIG. It is a perspective view which shows the state which removes slag after the welding of the side edge part shown in FIG. (a) is a perspective view which shows the state of the inspection after build-up welding of the flowchart shown in FIG. 5, (b) is a perspective view which shows the state of manual correction. It is a perspective view which shows the state which moved the cutting blade to the post-heater at the time of the post-heat treatment of the flowchart shown in FIG. (a) is a side view showing a rotary blade provided with a cutting blade after the post heat treatment shown in FIG. 16, and (b) is a side view showing another cutting blade. It is a top view which shows the conventional shearing type crusher. It is XIX-XIX sectional drawing shown in FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing a regeneration facility according to an embodiment of the present invention, and shows a main part. In the drawings of this embodiment, the configuration required for roughing and finishing of the cutting blade 3 to be described later is omitted, and only the configuration for performing build-up welding on the cutting blade 3 will be described.

  As shown in the figure, the construction for performing build-up welding of the regeneration facility 1 according to this embodiment is provided in a partition wall 2 partitioned by a predetermined range, and the cutting blade 3 is carried into and out of the partition wall 2. A loading / unloading machine 15, a handling robot 20 for moving the cutting blade 3 to a predetermined position in the partition wall 2, a preheater 60 for preheating the cutting blade 3 to a predetermined temperature, and a predetermined welding posture for the preheated cutting blade 3 A multi-axis holding machine 40 that is kept in a constant position, an automatic welder 50 (welding robot) that automatically builds up a welded overlay material on the cutting blade 3 held by the multi-axis holding machine 40, and build-up welding. And a post-heater 70 that performs post-heat treatment such as slow cooling on the cutting blade 3. The loading / unloading machine 15 is provided with a placing portion 16 for placing the cutting blade 3, and the placing portion 16 is moved inside and outside the partition wall 2 by the transport portion 17.

  Further, in the work range W20 of the handling robot 20, a standby unit 4 for waiting a plurality of cutting blades 3 at a predetermined address, a tab base 6 on which a tab 5 used during welding is placed, and a brush for removing slag 7 and a welding torch adjusting machine 56 for cleaning the welding torch 55 of the automatic welding machine 50. The cutting blade 3 is disposed at a predetermined address of the standby unit 4, and the type of the cutting blade 3, the preheating time, and the like are input to the control device 80 described later. At this time, information such as the address at which a “cutting blade that requires manual correction”, which will be described later, is waiting is input to the control device 80. The tab 5 is also disposed at a predetermined position on the tab base 6.

  Further, on the outside of the partition wall 2, a handling robot 20, a multi-axis holding machine 40, based on the coordinates of the cutting blade 3 arranged at the predetermined address, the arrangement coordinates of the tab 5, and the arrangement coordinates of other devices, A control device 80 for controlling the operation of the automatic welding machine 50 and the like is provided. Further, the cutting blade 3 is corrected in the preheating / postheating control device 81 for controlling the temperature of the preheating machine 60 and the postheating machine 70 and the determination unit 82 formed on the loading / unloading machine 15 outside the partition wall 2. A manual correction welding machine 83 for performing the above and the like is also provided.

  The handling robot 20 moves the cutting blade 3 disposed in the standby unit 4 to the preheater 60, moves from the preheater 60 to the multi-axis holder 40, moves from the multi-axis holder 40 to the rear heater 70, the preheater 60, and The cutting blade 3 is moved within the work range W20, such as movement between the post-heater 70 and the carry-in / out machine 15. Further, the tab 5 and the brush 7 on the tab base 6 are held and moved so as to contact the cutting blade 3 held by the multi-axis holding machine 40.

  The preheater 60 has a function of preheating the cutting blade 3 to a temperature suitable for overlay welding.

  The multi-axis holding machine 40 has a function of holding the cutting blade 3 and changing the posture of the cutting blade 3 according to the position of build-up welding.

  The automatic welding machine 50 is a multi-axis automatic welding robot that can change the position of the welding torch 55 within a work range W50. The welding torch adjusting machine 56 is a wire at the tip of the welding torch 55. It has functions for adjusting the length, removing spatter of the torch, and cleaning the inside of the torch.

  The post-heater 70 has a function of performing post-heat treatment such as slow cooling of the cutting blade 3 inserted from the opening / closing port 71 by the handling robot 20 at a predetermined temperature. The post-heater 70 may be configured such that the cutting blade 3 is placed on the mounting table 72 outside the opening / closing port 71, and the post-heat-treated cutting blade 3 is sequentially put out toward the side opposite to the opening / closing port.

  2 is a drawing of the handling robot of the regeneration facility shown in FIG. FIG. 3 is a drawing showing the multi-axis holding machine of the regeneration facility shown in FIG. 1, wherein (a) is a plan view and (b) is a side view.

  As shown in FIG. 2 (a), an articulated robot is employed as the handling robot 20, and includes a base 21 fixed to the floor, a lower arm 22, an upper arm 23, and a wrist 24. Yes. The lower arm 22 is provided on the base 21 so that the lower end of the lower arm 22 can turn around a vertical first axis J1 and can be angularly displaced back and forth around a horizontal second axis J2. A base end portion of the upper arm 23 is provided at an upper end portion of the lower arm 22 so as to be angularly displaceable up and down around a horizontal third axis J3. The wrist 24 attached to the tip of the upper arm 23 is provided so as to be angularly displaceable about a fourth axis J4 parallel to the axis of the upper arm 23, and has an angle about a fifth axis J5 orthogonal to the axis of the upper arm 23. Displaceable. The grip portion 25 attached to the wrist 24 can be angularly displaced about a sixth axis J6 orthogonal to the fifth axis J5.

  In addition, the gripping portion 25 includes a first gripping portion 26 that can grip the cutting blade 3 (FIG. 1) that has been preheated to a high temperature with the movable piece 26a, and the first gripping portion 25 as shown in FIG. 2 (b). And a second grip part 27 having a movable piece 27a that moves in a direction orthogonal to the grip part 26.

  The driving of each component with respect to the axes J1 to J6 of the articulated robot 20 is performed by servo motors (not shown), the posture of the robot 20 is controlled by these servo motors, and the gripping unit 25 is operated in the working range. It is moved within W20 (FIG. 1). The first gripping portion 26 and the second gripping portion 27 of the gripping portion 25 are opened and closed by hydraulic cylinders 26b and 27b.

  As shown in FIGS. 3A and 3B, the multi-axis holding machine 40 (positioner) has a base 41 fixed on the foundation, a tilting part 42, a rotating part 43, and a holding part 44. doing. The tilting part 42 is provided on the base 41 so as to be tiltable around a horizontal seventh axis J7. The rotating part 43 is provided on the tilting part 42 so as to be rotatable around an eighth axis J8 orthogonal to the seventh axis J7. The holding part 44 has a position holding member 44 a and a fixing member 45 so as to hold the cutting blade 3 (FIG. 7) at a predetermined position on the rotating part 43. The fixed member 45 is a movable body and holds the cutting blade 3 between the position holding member 44a. Thereby, the posture of the cutting blade 3 held by the holding unit 44 is controlled by the rotation of the rotating unit 43 and the tilting unit 42.

  As shown in FIG. 4, the automatic welding machine 50 is an articulated robot, and includes a base 51, a lower arm 52, an upper arm 53, and a wrist 54 that are fixed to the floor. The lower arm 52 is provided on the base 51 so that the lower end of the lower arm 52 can turn around the vertical ninth axis J9, and is provided on the base 51 so as to be angularly displaceable back and forth around the horizontal tenth axis J10. Yes. A base end portion of the upper arm 53 is provided at an upper end portion of the lower arm 52 so as to be angularly displaceable up and down around a horizontal eleventh axis J11. The wrist 54 provided at the tip of the upper arm 53 is provided so as to be rotatable around a twelfth axis J12 parallel to the axis of the upper arm 53, and around a thirteenth axis J13 orthogonal to the axis of the upper arm 53. Angular displacement is possible. The welding torch 55 attached to the wrist 54 can be angularly displaced by controlling the wrist 54.

  The posture of the welding torch 55 provided on the wrist 54 is controlled by driving the lower arm 52, the upper arm 53, and the wrist 54 with a servo motor (not shown). The posture control of the welding torch 55 is performed together with the posture control of the cutting blade 3 by the multi-axis holding machine 40. The welding torch 55 is movable within the work range W50.

  FIG. 5 is a flowchart showing an outline of a method for regenerating the cutting blade by the regenerating equipment shown in FIG. Based on this flowchart and FIG. 1 described above, an outline of a method for regenerating the cutting blade 3 by the regenerating equipment 1 will be described below.

<Judgment>
First, when the worn cutting blade 3 is received, it is determined from the worn state of the cutting blade 3 whether repair is possible (S1). If it is determined that the repair is impossible in this determination, it is disposed without being regenerated (S2). Further, it is determined whether or not manual correction is necessary even for the cutting blade 3 determined to be repairable (S3), and when manual correction is necessary, it is input to the control device 80 that manual correction is necessary. (S4). Whether or not this manual correction is necessary is determined based on whether or not there is a wear-out that causes the “chocolate stop”.

<Necessary processing>
When it is determined that the repair is possible in the above determination, the necessary chamfering / groove processing is performed on the tip edge portion 31 and the side edge portion 32 described later (S5). This chamfering and groove processing is performed for uniformizing the worn edge portions 31 and 32, stabilizing the welding by keeping the arc length constant, constant quality of the molten metal, constant hardness, and the like. . Moreover, as this chamfering / groove processing, chamfering / groove processing is performed according to the amount of overlay welding, the type of hardfacing welding material, and the like.

<Pre-heat treatment>
As preheating, it preheats for a predetermined time in the preheating machine 60 which can be preheated to the temperature suitable for overlay welding according to the material, size, etc. of the cutting blade 3 (S6).

<Hand correction>
The cutting blade 3 that has been preheated to a predetermined temperature by the preheat treatment, and the cutting blade 3 that has been determined to require manual correction (S7) is transferred to the determination unit 82 by the carry-in / out machine 15 and is transferred by the operator M. Hand correction is performed (S8). In this manual correction, build-up welding is performed on the edge portions 31 and 32 so as not to cause a problem in automatic welding by the next automatic welding machine 50.

<Overlay welding>
The above-described cutting blade 3 that does not require manual correction and the cutting blade 3 that has been subjected to manual correction are subjected to overlay welding 30 on the edge portions 31 and 32 by the automatic welding machine 50 as described later (S9). The build-up welding 30 is performed on the chamfered edge portions 31 and 32 by arc welding. At the time of this build-up welding, the optimum position is determined by the welding position of the cutting blade 3 input in advance to the control device 80, the coordinates of the multi-axis holder 40, the coordinates of the tip of the welding torch 55 of the automatic welding machine 50, and the like. Further, it is continuously performed from one end of the edge portions 31 and 32 to the other end while controlling the axes J1 to J13.

<Inspection>
After the build-up welding 30 is performed, the operator checks whether or not a deficient portion or the like is generated in the meat built by the build-up welding 30 (S10). If there is a portion of insufficient build-up at the time of this inspection, it is repaired by manual correction and a necessary amount of the hard build-up welding material is built up (S11).

<Post-heat treatment>
As described above, the cutting blade 3 on which the build-up welding 30 is performed on the tip edge portion 31 and the side edge portion 32 is then subjected to post-heat treatment such as slow cooling at a predetermined temperature (S12). By this heat treatment, build-up welding 30 of the hard build-up weld material to the edge portions 31 and 32 of the worn cutting blade 3 is completed.

<Roughing>
In the cutting blade 3 on which the build-up welding 30 is performed, first, the surplus wall on the back side of the built-up side edge portion 32 and the tip edge portion 31 is removed by rough machining by a vertical milling machine or the like (S13). ).

<Finish processing>
Next, both the side surfaces and the tip edge portion 31 are polished by a rotary polishing machine or the like, and the tip edge portion 31 and the side edge portion 32 of the cutting blade 3 are reprocessed and finished to a predetermined edge. (S14).

    The machining of these <rough machining> and <finishing machining> has, for example, an automatic tool change function for automatically changing a plurality of cutting tools stored in a tool magazine, and computer numerical control (CNC) according to the purpose. ) May be automatically replaced by a machine tool (machining center) that can perform different types of machining with a single machine.

  Hereinafter, the main steps shown in the flowchart of FIG. 5 will be described in detail with reference to FIGS. In the following description, the split-type cutting blade 3 is taken as an example, the same reference numerals are given to the components described in the above-described drawings, and the description thereof is omitted.

  FIG. 6 is a perspective view showing a state in which the cutting blade is moved to the preheater during the preheat treatment in the flowchart shown in FIG. FIG. 7 is a perspective view showing a state in which the cutting blade after the pre-heat treatment of the flowchart shown in FIG. 5 is held by the multi-axis holding machine.

  As shown in FIG. 6, the preheater 60 is configured such that a support base 61 on which the cutting blade 3 is placed and a lid body 62 that opens and closes integrally with the support base 61 slides in the horizontal direction. If the lid 62 is closed with the cutting blade 3 placed on the support base 61, the cutting blade 3 is stored in the preheater 60. The cutting blade 3 is placed on the support base 61 of the preheating machine 60 when the handling robot 20 grips and moves the cutting blade 3 disposed at a predetermined address of the standby unit 4. The preheater 60 preheats to a temperature suitable for overlay welding (for example, about 150 to 500 ° C.) according to the material and size of the cutting blade 3.

  As shown in FIG. 7, the cutting blade 3 that has been preheated by the preheater 60 is moved to the multi-axis holder 40 by the handling robot 20 and is held by the holding portion 44 of the multi-axis holder 40. . The cutting blade 3 is held by holding the cutting blade 3 moved by the handling robot 20 so as to come into contact with the position holding member 44a of the holding portion 44 between the fixing member 45 and the position holding member 44a. .

  Further, the cutting blade 3 that has been determined to require manual correction in the determination (S3) of whether or not manual correction shown in FIG. 5 is required is held in the loading / unloading machine 15 before being held by the multi-axis holding machine 40. Is moved to the determination unit 82 to perform hand correction (FIG. 1).

  FIG. 8 is a drawing showing a state in which the tip edge portion of the cutting blade is welded at the time of overlay welding in the flowchart shown in FIG. 5, wherein (a) is a perspective view and (b) is a side view. 9 (a) to 9 (c) are perspective views showing a procedure at the time of welding of the leading edge portion shown in FIG. FIG. 10 is a perspective view showing a state in which the side edge portion of the cutting blade is welded at the time of build-up welding, and FIGS. 11A and 11B are procedures at the time of welding the side edge portion shown in FIG. FIG. 12 is a perspective view showing a state in which a side edge portion different from the side edge portion shown in FIG. 11 is welded, and FIG. 13 is a perspective view showing a procedure during welding of the side edge portion shown in FIG. . 9, 11, and 13, for the sake of explanation, the cutting blade 3 is in a horizontal state, and symbols (A) to (F) are attached to the respective angular positions (end positions) of the cutting blade 3. The description will be made with (1) to (9) in order of work.

  As shown in FIG. 8 (a), build-up welding to the edge portions 31, 32 of the cutting blade 3 held by the multi-axis holder 40 is first performed on the tip edge portion 31. Since the leading edge 31 is pointed to the front side in the rotation direction, the handling robot 20 has the tab 5 applied to the anti-welder side (lower surface side) and the welding torch 55 of the automatic welder 50 from above. Prime welding is performed. That is, as shown in FIG. 8 (b), the tab 5 is applied to the anti-welding torch side (anti-welding machine side) along the lower surface of the tip edge portion 31 and welded from above by the welding torch 55, The build-up welding is prevented from being piled on the anti-welding torch side, and the reworking to the front edge portion 31 after welding can be easily performed. As the tab 5 (plate), a fire-resistant ceramic block or a metal block such as copper is used.

  The welding posture by the welding torch 55 is basically a downward welding with the tip of the welding torch 55 directed directly downward, while maintaining the posture of the cutting blade 3 so as to be slightly uphill from the horizontal. This welding posture is controlled by the multi-axis holding machine 40 so that the posture of the cutting blade 3 becomes an optimum posture, and the automatic welding machine 50 controls the posture of the welding torch 55.

  As shown in FIGS. 9 (a) to 9 (c), the details of the build-up welding to the tip edge portion 31 are as shown in FIG. 9 (a). First, as shown in FIG. B) Arc spot welding 33 and 34 are sequentially performed at a position with a welding torch 55 [(1), (2)]. Then, as shown in (b), the build-up welding 30 is continuously performed between the arc spot welds 33 and 34 of the tip edge portion 31 [(3)]. This build-up welding 30 is performed from the position (A) where the arc spot welding 33 is performed first to the position (B), and effective welding prevention by the arc spot welding 33, 34 is achieved. Further, as shown in (c), in this example, two-layer build-up welding 30 is performed. Since the build-up weld 30 to the tip edge portion 31 is most easily worn, two or more layers are preferable.

  Next, as shown in FIG. 10, build-up welding is performed on the side edge portion 32 of the cutting blade 3. In this build-up welding, the welding posture by the welding torch 55 is basically a downward welding in which the tip of the welding torch 55 is directed downward, while controlling the posture of the cutting blade 3 so as to be slightly uphill from the horizontal. Done. This welding posture is also controlled so that the posture of the cutting blade 3 becomes an optimum posture by the multi-axis holding device 40, and the posture of the welding torch 55 is controlled by the automatic welding machine 50.

  As shown in FIGS. 11 (a) and 11 (b), the build-up weld 30 to the side edge portion 32 is, as shown in FIG. 11 (a), the thickness direction of the acute angle portion at the end in the counter-rotating direction of the cutting blade 3. Arc spot welds 35 and 36 are sequentially performed at the positions of both ends (C) and (D), as shown in [(4), (5)] and (b). Overlay welding 30 is continuously performed from the positions (C) and (D) toward the positions (A) and (B) of the tip edge 31 [(6) and (7)]. This build-up welding 30 is also performed from the (C) position of the arc spot welding 35 performed earlier to the (A) position of the tip edge portion 31, and effective welding prevention by the arc spot welding 35, 36 is performed. I am trying.

  Next, as shown in FIG. 12, build-up welding is performed on the other side edge portion 32 sandwiching the tip edge portion 31. In this build-up welding, the welding posture by the welding torch 55 is basically a downward welding in which the tip of the welding torch 55 is directed downward, while controlling the posture of the cutting blade 3 so as to be slightly uphill from the horizontal. Done. This welding posture is also controlled so that the posture of the cutting blade 3 becomes an optimum posture by the multi-axis holding device 40, and the posture of the welding torch 55 is controlled by the automatic welding machine 50.

  As shown in FIG. 13, the build-up welding 30 to the side edge portion 32 is carried out from the positions (E), (F) of the side edge portion 32 in the circumferential direction from the positions (A), (B ) The build-up welding 30 is continuously performed toward the position [(8), (9)]. Since the corners of the circumferential ends (E) and (F) are not acute, the build-up welding 30 is performed without performing the arc spot welding 35 and 36 as described above.

  FIG. 14 is a perspective view showing a state in which slag is removed after welding of the side edge portion shown in FIG. As described above, when the build-up welding 30 (FIG. 13) is completed at the leading edge portion 31 and the side edge portion 32 of the cutting blade 3, the handling robot 20 performs the first operation to remove the slag of the build-up welding 30. The slag is removed by gripping the brush 7 with one gripping portion 26 and moving the brush 7 along the side edge portion 32.

  Further, using the time for removing the slag as described above, the welding torch 55 of the automatic welding machine 50 prepares for the next welding, and adjusts the wire, removes the spatter of the torch by the welding torch adjusting machine 56 shown in FIG. Internal cleaning, adjustment of wire length, etc. are performed.

  In addition, when performing the build-up welding 30 of the multiple layers in the side edge part 32, what is necessary is just to make it the dent in a welding bead terminal end disperse | distribute by reversing the advancing direction of an odd layer and an even layer.

  FIG. 15A is a perspective view showing a state of inspection after build-up welding in the flowchart shown in FIG. 5, and FIG. 15B is a perspective view showing a state of manual correction. As shown in the figure, when the build-up welding 30 by the automatic welding machine 50 is completed, the cutting blade 3 is once carried out to the determination unit 82 by the carry-in / out machine 15 and is visually inspected by the worker M (FIG. 1). ). In this inspection, as shown in FIG. 15 (a), the overlay of the build-up weld 30 is inspected by an inspection jig 84. If there is a shortage in the build-up amount in this inspection, as shown in FIG. 15 (b), the operator M manually corrects the build-up welding with the welding torch 83a of the manual correction welding machine 83 (FIG. 1). To do.

  FIG. 16 is a perspective view showing a state where the cutting blade is moved to the post-heater during the post-heat treatment in the flowchart shown in FIG. The cutting blade 3 that has been inspected as described above is again carried into the partition wall 2 by the loading / unloading machine 15 (FIG. 1), placed on the mounting table 72 of the rear heating machine 70 by the handling robot 20, and opened and closed. It is put into the rear heating machine 70 from the mouth 71. The cutting blade 3 is subjected to post-heat treatment for a predetermined time in the post-heater 70.

  The cutting blade 3 post-heat treated by the post-heater 70 is returned to the predetermined address of the standby unit 4 described above by the handling robot 20 (FIG. 1). The cutting blade 3 subjected to the heat treatment thereafter is the cutting blade 3 in which the roughing and finishing are performed by a processing machine (not shown), and the leading edge portion 31 and the side edge portion 32 are regenerated.

  The cutting blade regenerating method shown in FIGS. 8 to 16 as described above is an explanation in the case where the cutting blade 3 includes an object that requires manual correction. In the case of only the cutting blade 3 that does not need to prevent the occurrence of the “chocolate stop” described above during automatic welding, the steps relating to the manual correction may be omitted.

  FIG. 17A is a side view showing a rotary blade provided with the cutting blade shown in FIG. 16, and FIG. 17B is a side view showing another cutting blade.

  As shown in FIG. 17 (a), according to the regenerated split cutting blade 3, the tip edge portion 31 and the side edge portion 32 are attached around the blade base portion 106 (same configuration as FIG. 19). Since it can be regenerated as a rotary blade 10 that is welded with a build-up welding material in the entire circumferential direction, a shearing method that reduces the running cost required for the cutting blade 3 while reducing costs compared to replacing with a new one. Operation of crushing equipment becomes possible. Moreover, the entire periphery of the edge portion of the rotary blade 10 rotating in the rotation direction R becomes a hardfacing welding material, and the rotary blade 10 having a high hardness at the edge portion can be formed.

  Further, as shown in FIG. 17B, the split cutting blade 3 is described as an example in the above embodiment, but the same can be reproduced with the integrated cutting blade 11 as well. In the case of the integrated cutting blade 11 in which the cutting blade 3 and the blade base portion 106 are integrally formed, the above-described multi-axis holding machine 40 is changed to a configuration that can hold the integrated cutting blade 11 and control the posture. The side edge part 32 from the edge part of the edge part 31 to the edge part of the next front-end | tip edge part 31 is continuously automatic build-up welding. And according to the integrated cutting blade 11 which performed the build-up welding 30 to this front-end | tip edge part 31 and the side edge part 32, the front-end | tip edge part 31 and the side edge part 32 which work most are hardened | cured meat with high hardness. Since it can be regenerated as an integrated cutting blade 11 that is a welded material, the operation of a shearing crushing facility that reduces costs and reduces the running cost required for the integrated cutting blade 11 compared with the case of replacement with a new one can be realized. It becomes possible. Thus, the present invention is not limited to the split type cutting blade 3 but can be applied to the integrated cutting blade 11.

  In addition, although the structure which performs the build-up welding 30 to the cutting blade 3 to reproduce | regenerate was mainly demonstrated in the reproduction | regeneration equipment 1 of the said embodiment, the apparatus which performs the chamfering process with respect to the edge parts 31 and 32 of the cutting blade 3 received In addition, each machine is arranged so that the work can be continuously performed, including a device (such as the above vertical milling machine, rotary grinder, etc.) that regenerates the edge portions 31 and 32 on the cutting blade 3 subjected to the build-up welding 30 Thus, it is preferable to configure the regeneration facility, and the mechanical arrangement of the above embodiment is an example, and the arrangement of each device is not limited to the above embodiment.

  Furthermore, the above-described embodiment shows an example, and various modifications can be made without departing from the gist of the present invention, and the present invention is not limited to the above-described embodiment.

  The method for regenerating a cutting blade according to the present invention can be used when a cutting blade used in a shearing crusher is regenerated and reused.

1 Reproduction equipment
3 Cutting blade
DESCRIPTION OF SYMBOLS 5 Tab 10 Rotating blade 11 Integrated cutting blade 15 Loading / unloading machine 16 Mounting part 17 Conveying part 20 Handling robot 25 Gripping part 26 1st holding part 27 2nd holding part 30 Overlay welding 31 Front edge part 32 Side edge part 40 Multi-axis holding machine 42 Tilt part 43 Rotating part 44 Holding part 45 Fixing member 50 Automatic welding machine 55 Welding torch 60 Preheating machine 70 Post heating machine 80 Control device 82 Judgment part 83 Manual correction welding machine 84 Inspection jig

Claims (6)

A cutting edge part protruding outward from the fixed part, the cutting edge part has a tip edge part that is pointed in the rotation direction, and regenerates the edge part of a cutting blade having a side edge part at the side outer edge including the cutting edge part a playback facility that,
And unloading machine to carry out the previous SL cutting blades,
A handling robot for moving the cutting blade carried in by the loading / unloading machine;
A preheater that preheats the cutting blade to a predetermined temperature;
A multi-axis holding machine that holds the cutting blade preheated by the preheating machine and displaces the cutting blade to a predetermined welding posture;
An automatic welding machine for continuously automatically build-up welding a hardfacing welding material with a welding torch on the edge portion of the cutting blade according to the posture of the cutting blade displaced by the multi-axis holding machine;
A post-heater for post-heat-treating the cutting blade that has been welded by the automatic welder at a predetermined temperature;
The cutting blade is transported to the preheater and preheated, and after the preheat treatment, transported to and held by the multi-axis holder, and the automatic welding machine is attached to the edge portion while the posture is displaced by the multi-axis holder. A build-up welding, and after the build-up welding, having a control device for transporting to the post-heater and post-heat treatment ,
The multi-axis holding machine has a function of displacing the cutting blade so that the welding posture with respect to the edge portion of the cutting blade is a downward welding and a front rising welding posture during the build-up welding,
The automatic welding machine cooperates with the displacement of the cutting blade by the multi-axis holding machine and displaces the welding torch so as to be in a downward and forward-up welding position, so that one end of the edge portion is shifted from the other end to the other end. A cutting blade regenerating facility comprising a welding robot having a function of performing continuous build-up welding toward a part . 2. The cutting blade regeneration facility according to claim 1 , wherein the handling robot has a function of holding and holding a flax stub on the anti-automatic welding machine side during overlay welding of the edge portion by the automatic welding machine. The regeneration equipment according to claim 1, further comprising a cutting edge portion protruding outward from the fixed portion, the cutting edge portion having a tip edge portion that is pointed in the rotation direction, and a side edge at a side outer edge including the cutting edge portion. A regeneration method for regenerating an edge portion of a cutting blade having a portion,
A chamfering step of performing a predetermined chamfer the edge portion of the front SL cutting blade,
A preheating step of preheating the chamfered cutting blade to a predetermined temperature;
The edge portion that is chamfering the preheat-treated cutting blade cooperates with the displacement of the cutting blade by the multi-axis holding machine to displace the welding torch so as to be in a downward and forward-up welding position. A build-up welding process in which the build-up welding material is continuously automatically built-up welded from one end of the edge portion to the other end ;
A post-heating step in which the build-up welded cutting blade is post-heat treated at a predetermined temperature;
A method for regenerating a cutting blade, comprising sequentially performing a processing step of reprocessing the build-up welded portion of the post-heat treated cutting blade into a predetermined edge portion. After the build-up welding process, an inspection process for inspecting the suitability of the build-up state of the build-up welding is performed, and a correction process for performing appropriate build-up welding on the build-up portion determined to be inappropriate in the inspection process is performed. The method for regenerating a cutting blade according to claim 3 . After said buildup welding process was performed robotic overlay clad of the tip edge portion against the tab on the lower surface of the leading edge portion pointed in the direction of rotation of the blade portion protruding outwardly of the cutting blade, wherein The method for regenerating a cutting blade according to claim 3 or 4 , wherein overlay welding is performed on the side edge portion. The method for regenerating a cutting blade according to any one of claims 3 to 5 , wherein the cutting blade is moved by a robot during the preheating step, the build-up welding step, and the post-heating step.

Images