JP4263411B2 - Semi-cured mortar block cutting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for cutting a semi-cured mortar block.
[0002]
[Prior art]
Conventionally, as means for cutting a semi-cured mortar block such as foamable ALC (lightweight cellular concrete) or non-foamable mortar, as disclosed in JP-A-59-131409, a cutting line is used. The lining blocks are arranged side by side so that they can be driven back and forth in the length direction, the semi-cured mortar block is conveyed toward the cutting line and the wrapping line, and the semi-curing mortar block is first cut by the cutting line. After that, the leveling line is inserted into the gap formed by the cutting line, the striped pattern formed by the cutting line is erased by rubbing with the leveling line, and the cut surface is smoothed. Are known. Further, both the cutting line and the leveling line are arranged in parallel in a direction perpendicular to the conveying direction of the semi-cured mortar block, thereby separating the semi-cured mortar block into a plurality of plates at a time. It is like that.
[0003]
[Problems to be solved by the invention]
As described above, in an apparatus that performs cutting and leveling using a wire (cutting line and leveling line), it is inevitable that the wire is broken. When the wire breaks in this way, the operation is stopped and the wire is replaced.
As a method for replacing the broken wire, it is conceivable that the broken wire is removed from the support member supporting the wire, and then the new wire is transferred to the support member.
[0004]
However, since each wire has to be set in a state where a predetermined tension suitable for cutting or a predetermined tension suitable for leveling is applied, it takes time to replace the new wire. Therefore, there is a problem that the time required for maintenance, that is, the time during which the operation is stopped becomes longer, and the operation efficiency is lowered accordingly.
Even in the case of no breakage, the maintenance operation in which all the wires are regularly replaced also takes a long time to stop the operation, resulting in a problem that the operation efficiency is lowered.
[0005]
The present invention has been made in view of the above circumstances, and has an object to efficiently perform an operation of exchanging a wire rod for a new one.
[0006]
[Means for Solving the Problems]
  According to the first aspect of the present invention, a plurality of cutting lines that are reciprocally driven in the length direction are provided in parallel, and a plurality of leveling lines that are reciprocated in the length direction are paired with the respective cutting lines. The semi-cured mortar block is cut along the cutting line while moving the semi-cured mortar block in the direction perpendicular to the reciprocating direction with respect to the cutting line and the leveling line. In the cutting device of the semi-cured mortar block in which the leveling line is slid in contact with the cutting surface formed by cutting the cutting line to smooth the cutting surface,A main frame capable of moving between a cutting position in the moving path of the semi-cured mortar block and a retreat position outside the moving path of the semi-cured mortar block, and provided in the main frame for cutting. A sub-frame for a cutting line that collectively supports the plurality of cutting lines guided so as to be capable of reciprocating in the length direction of the line, and a reciprocation in the length direction of the leveling line provided on the main frame. A subframe for leveling lines that collectively supports the plurality of leveling lines guided to be movable;The main frame is configured to include a driving unit that reciprocates the cutting line subframe and the leveling line subframe.
[0007]
According to a second aspect of the present invention, in the first aspect of the present invention, the driving means connects the two sub-frames for the cutting line and the sub-frame for the leveling line to an eccentric position of the rotating member. The frame is configured to reciprocate.
[0008]
  The invention of claim 3 is the invention of claim 1 or claim 2,The cutting line subframe and the leveling line subframe are reciprocated in the vertical direction, and the cutting line subframe immediately before the cutting line subframe reaches bottom dead center. And a buffering means for elastically supporting the subframe for the leveling line from below immediately before the subframe for the leveling line reaches bottom dead center. It was set as the structure.
[0009]
  The invention of claim 4 is the invention of any one of claims 1 to 3,The cutting frame sub-frame is provided with a plurality of air cylinders connected to ends of the cutting lines, and the air pressure is uniformly supplied to the plurality of air cylinders. The line was set to a uniform tension.
  The invention of claim 5 is the invention of any one of claims 1 to 4,The leveling line sub-frame is provided with a tension relaxation means for relaxing an increase in tension of the leveling line.
[0010]
[Action and effect of the invention]
  [Invention of Claim 1]
  When replacing or batch-changing wires, move the subframe that supports the wires to be replaced to the standby position outside the moving path of the semi-cured mortar block together with the drive means and main frame, and then The subframe on which the new wire is supported may be moved to the cutting position in the moving path of the semi-cured mortar block integrally with the driving means and the main frame. As described above, according to the present invention, when the wire is replaced, it is only necessary to replace the main frame, so that time-consuming work of replacing the wire with respect to the subframe is not required at the site of the cutting process. . As a result, it is possible to shorten the time for replacing the wire, that is, to shorten the operation stop time associated with the replacement, and to improve the work efficiency.
  In addition, the cutting line subframe and the leveling line subframe can be driven independently, so that the reciprocating speed of the cutting line and leveling line and the phase between them can be set freely. The degree can be increased. Moreover, since the two sub-frames are supported by a single main frame, both sub-frames can be exchanged simultaneously in one operation, and the exchanging efficiency is excellent.
[0011]
  [Invention of claim 2]
When the rotating member rotates, the subframe for the cutting line and the subframe for the leveling line reciprocate so that the semi-cured mortar block is cut by the cutting line and the cut surface is smoothed by the leveling line. . Since the two subframes are reciprocated by the common driving means, the driving means can be simplified as compared with the case where each subframe is driven individually.
[0012]
  [Claims3Invention of]
  When the subframe is driven to reciprocate in the vertical direction, there is a concern that the load on the driving means becomes excessive when the subframe is folded back at the bottom dead center due to the inertial force accompanying the driving and the gravity acting on the subframe. Since the subframe is supported by the buffer means from below, the load on the driving means is reduced.
  [Claims4Invention of]
  Even if there are variations in the diameter and length of the cutting line, the tension of all the cutting lines can be made uniform, and uniform cutting can be performed. Since the air cylinder as the tension applying means for the cutting line is provided in the subframe, the cutting line and the tension applying means can be exchanged together.
[0013]
  [Claims5Invention of]
  Even if a break-in line is caught at the entrance edge of the gap formed in the semi-cured mortar block by cutting the cut line, the increase in tension is alleviated, so the break-in line is an area other than the cut part by the cut line Can be avoided, and the leveling line can surely enter the gap between the leveling lines to smoothly perform the leveling operation.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
[Embodiment 1]
A first embodiment of the present invention will be described below with reference to FIGS.
As shown in FIG. 1, the cutting apparatus A of the present embodiment has a cutting frame 30 </ b> F in which a plurality of cutting lines 40 </ b> F are stretched up and down and a leveling frame in which a plurality of leveling lines 40 </ b> R are stretched up and down. 30R is reciprocated up and down by the driving means 15 while being supported by the main frame 10. The cutting line 40F and the leveling line 40R arranged in parallel with each other are reciprocated in the length direction, and the semi-cured mortar block is perpendicular to the direction of the reciprocation relative to the cutting line 40F and the leveling line 40R. By moving M, the semi-cured mortar block M is cut by the cutting line 40F, and the cut-off line Mb is brought into sliding contact with the cut-off surface Mb formed by cutting the cutting line 40F, so that the cutting surface Mb becomes The smoothed leveling surface Ma is obtained. The detailed configuration will be described below. In the following description, in the front-rear direction, the right side in FIGS. 1, 2, and 3 is referred to as the front side.
[0015]
As shown in FIG. 2, the semi-cured mortar block M, which has been removed from the mold after foaming / curing curing and has a long rectangular shape in the front-rear direction, is transported by the transfer carriage W and is cut into the first conveyor. It is placed on Ca and waits in preparation for cutting. The transport conveyor is provided with a first conveyor Ca and a second conveyor Cb, and the semi-cured mortar block M is transported in the horizontal direction while being transferred from the first conveyor Ca to the second conveyor Cb. That is, when transferring from the first conveyor Ca to the second conveyor Cb, the cutting device A cuts the plate.
[0016]
The cutting device A is in the form of a single unit, the cutting position Pa between the first conveyor Ca and the second conveyor Cb in the movement path of the semi-cured mortar block M, and the semi-cured mortar block M. It can move between the retracted position Pb retracted out of the travel path. As a means for this movement, although not shown, a method of rolling a wheel provided in the cutting device A on a rail provided on the floor surface, or a method of providing a wheel in the cutting device A and moving it directly on the floor surface. and so on. At the cutting position Pa, the cutting device A is fixed in a non-movable manner by known clamping means (not shown).
[0017]
As shown in FIG. 1, the cutting device A is similar to a main frame 10 and a cutting line subframe (hereinafter referred to as a cutting line frame 30F) provided on the main frame 10 so as to be reciprocally movable in the vertical direction. A subframe for leveling lines (hereinafter referred to as leveling line frame 30R) provided in the main frame 10 so as to be reciprocally movable in the vertical direction, and driving means 15 for reciprocally driving both frames 30F and 30R. It is prepared for.
[0018]
As shown in FIG. 3 and FIG. 4, the main frame 10 is obtained by connecting the upper ends of the left and right support columns 11 with the upper beam 12 and connecting the lower ends of the support columns 11 with the lower beam 13. Form a square. Between the upper ends of the left and right support columns 11, the crankshaft 17 that is rotationally driven by the motor 16 has its axis line directed in the left-right direction (a direction orthogonal to the reciprocating direction of the cutting line frame 30F and the leveling line frame 30R). The crankshaft 17 is provided with a cutting rotary member 18 for vertically driving the cutting line frame 30F on the crankshaft 17, and driving the leveling line frame 30R up and down. A rotating member 19 for leveling is provided so as to be integrated. Further, as shown in FIG. 11, the upper ends of the link arms 20F and 20R are connected to the eccentric positions 18b and 19b of the rotary members 18 and 19 which are out of the rotation centers 18a and 19a, respectively, so as to be relatively rotatable. The lower ends of the link arms 20F and 20R are connected to the cutting line frame 30F and the leveling line frame 30R as will be described later. As shown in FIG. 11, the crankshaft 17, the motor 16, the rotating members 18, 19 and the link arms 20F, 20R constitute the driving means 15 for reciprocating the cutting line frame 30F and the leveling line frame 30R. .
[0019]
Also, as shown in FIGS. 4, 5 and 6, the inner surfaces of the left and right support columns 11 each extend linearly in the vertical direction and slide in the cutting line frame 30F and the grading line frame 30R. A pair of guide rails 21F and 21R that are paired vertically are provided in parallel in the front-rear direction. Further, as shown in FIG. 6, L-shaped receiving brackets 22F and 22R are fixed at positions between the guide rails 21F and 21R on the inner side surfaces of the left and right support columns 11, respectively. Further, the front surfaces of the left and right support columns 11 shown in FIG. 5 are for receiving the reaction force acting on the cutting line 40F and the cutting line frame 30F from the semi-cured mortar block M when the semi-cured mortar block M is cut. A bearing surface 23 is provided.
[0020]
As shown in FIG. 3, the cutting line frame 30 </ b> F has a rectangular shape whose vertical and horizontal dimensions are smaller than the main frame 10, and is at a position closer to the front (side closer to the first conveyor Ca) in the internal space of the main frame 10. It is arranged. The semi-cured mortar block M is conveyed so as to penetrate through the cutting line frame 30F. As shown in FIG. 8, the lower end portion of the link arm 20F connected to the cutting rotary member 18 is connected to the upper frame 31F of the cutting line frame 30F so as to be relatively rotatable. As shown in FIG. 5, a pair of upper and lower connecting plates 33F is fixed to the front surface of the left and right side frames 32F of the cutting line frame 30F, and a guided member 34F is fixed to the rear surface of each connecting plate 33F. The guided member 34F is arranged at substantially the same position as the cutting line frame 30F in the front-rear direction, and the guide groove 35F on the outer side surface of the guided member 34F is located above and below the guide rail 21F on the front side of the main frame 10. The cutting line frame 30F is guided so as to be movable in the vertical direction.
[0021]
In addition, a support roller 37 with its axis line directed in the left-right direction is rotatably supported on the frame-like support portion 36 protruding from the front surface of each connecting plate 33F, and the support roller 37 is located above and below the cutting line frame 30F. As it moves, it rolls on the bearing surface 23 of the main frame 10 (see FIGS. 4 and 5). Further, as shown in FIG. 7, an L-shaped holding bracket 38F is fixed to the outer side surfaces of the left and right side frames 32F of the cutting line frame 30F (side surfaces facing the columns 11 of the main frame 10). FIG. 7 shows an air bag 39F (buffer means which is a constituent element of the present invention) in which air of a predetermined pressure is sealed inside by the compressor 48 between the holding bracket 38F and the receiving bracket 22F of the main frame 10. So as to be sandwiched between the upper and lower sides.
[0022]
As shown in FIGS. 1, 2, and 3, the cutting line frame 30F supports a plurality of cutting lines 40F for separating the semi-cured mortar block M in the left-right direction. The plurality of cutting lines 40F are arranged in parallel in parallel with each other at a constant pitch in the vertical direction and in the horizontal direction. Each cutting line 40F is supported as shown in FIGS. A plurality of arm brackets 41 projecting rearward are fixed to the upper frame 31F of the cutting line frame 30F at a constant pitch in the left-right direction, and the upper ends of the air cylinders 42 are respectively connected to the projecting ends of the arm brackets 41. In a form in which 43 is projected downward, it is supported in a suspended form so as to be swingable in the front-rear direction. Further, as shown in FIGS. 10 and 12, a support frame 44 parallel to the upper frame 31F is fixed and stretched to the upper end portions (height slightly lower than the upper frame 31F) of the left and right side frames 32F. On the lower surface of the support frame 44, a plurality of swing arms 45 elongated in the front-rear direction are supported so as to be swingable in the up-down direction and to correspond to the air cylinders 42. The rear end of each swing arm 45 is connected to the lower end of the corresponding rod 43 so as to be relatively rotatable, and the front end of each swing arm 45 is formed with a mounting groove 45S that opens to the front end. ing. On the other hand, a support plate 46 that is elongated in the left-right direction is fixed to the upper surface of the lower frame of the cutting line frame 30F, and a plurality of mounting grooves 46S that open to the front edge of the support plate 46 are provided on the swing arm 45. Are formed in correspondence with the mounting grooves 45S. As shown in FIG. 12, a locking tool 47 having a diameter larger than that of the cutting line 40F is fixed to the upper and lower ends of each cutting line 40F. While being fitted into 45S and 46S, each locking tool 47 is locked to the swing arm 45 and the support plate 46, thereby being attached to the cutting line frame 30F.
[0023]
The plurality of air cylinders 42 that support the cutting lines 40F can be individually driven to extend and contract the rods 43, and the air routed in the support frame 44 is not shown. Air of uniform pressure is supplied from the compressor 48 to all the air cylinders 42 through the supply path. Due to the pressure of the air, each rod 43 individually extends according to the length and thickness of the cutting line 40F connected to the rod 43 via the swing arm 45, and the upper end portion of the cutting line 40F is extended. Pull up. As a result, all the cutting lines 40F are supported in a tensioned state with a constant tension even if there are variations in length and thickness.
[0024]
As shown in FIGS. 1, 3, and 4, the leveling line frame 30 </ b> R has a rectangular shape whose vertical and horizontal dimensions are smaller than those of the main frame 10, and as shown in FIG. 2, in the internal space of the main frame 10. It is arranged at a position closer to the rear (side closer to the second conveyor Cb). The semi-cured mortar block M is conveyed so as to penetrate through the leveling line frame 30R. As shown in FIG. 9, the lower end of the link arm 20R connected to the leveling rotating member 19 is connected to the upper frame 31R of the leveling line frame 30R so as to be relatively rotatable. Further, as shown in FIG. 5, a pair of upper and lower connecting plates 33R is fixed to the rear surface of the left and right side frames 32R of the leveling line frame 30R, and a guided member 34R is fixed to the rear surface of each connecting plate 33R. . The guided member 34R is disposed at substantially the same position as the run-off line frame 30R in the front-rear direction, and the guide groove 35R on the outer side surface of the guided member 34R is relative to the guide rail 21R on the rear side of the main frame 10. Thus, the leveling line frame 30R is guided so as to be movable in the vertical direction.
[0025]
Further, as shown in FIGS. 6 and 7, an L-shaped holding bracket 38R is fixed to the outer side surface (the side surface facing the column 11 of the main frame 10) of the left and right side frames 32R of the leveling line frame 30R. Between the holding bracket 38R and the receiving bracket 22R of the main frame 10, there is an airbag 39R (buffer means which is a constituent element of the present invention) in which air of a predetermined pressure is sealed inside by the compressor 48. It is inserted in a state of being sandwiched between the top and bottom.
[0026]
In this leveling line frame 30R, the semi-cured mortar block M is formed by cutting lines 40F inside the semi-cured mortar block M as shown in FIG. A plurality of leveling lines 40R that enter the gap and are slidably contacted with the pair of left and right cut surfaces Mb in the gap are supported so as to be paired with the cut line 40F in the front-rear direction.
The plurality of leveling lines 40R are arranged in parallel in parallel with each other at the same pitch as the cutting line 40F in the vertical direction and in the horizontal direction, and are supported as follows. As shown in FIGS. 12 and 13, a support frame 49 parallel to the upper frame 31R is fixed and stretched at a position lower than the swing arm 45 at the upper end of the leveling line frame 30R. A support plate 50 that is elongated in the left-right direction is fixed to the lower surface of 49, and a plurality of support grooves 50S that open to the front edge of the support plate 50 are formed corresponding to the mounting grooves 45S of the cutting line 40F. ing. Also, a support plate 51 that is elongated in the left-right direction is also fixed to the frame that is passed between the lower ends of the left and right side frames. The support plate 51 has a plurality of support grooves 51S that open at the front edge. The upper support groove 50S is formed in an arrangement corresponding to the upper support groove 50S.
[0027]
As shown in FIGS. 12 and 13, a columnar support tool 52 having a diameter larger than that of the leveling line 40 </ b> R is fixed to both upper and lower ends of each leveling line 40 </ b> R, and the diameter is larger than that of the support level 52. A small compression coil spring 53 (tension relaxation means which is a constituent of the present invention) is loosely fitted. The leveling line 40R is smoothed by fitting the upper and lower ends thereof into the support grooves 50S and 51S and locking the support members 52 to the upper and lower support plates 50 and 51 via the compression coil springs 53. It is attached to the line frame 30R.
[0028]
These leveling wires 40R are supported by the elasticity of the compression coil spring 53 with respect to the leveling wire frame 30R in a state of being individually tensioned with a predetermined tension. Note that the tension of the leveling line 40R is slightly varied although it is within the allowable range. The leveling line 40R is arranged at a position corresponding to the cutting line frame 30F in the front-rear direction. The cutting line 40F is arranged at a position ahead of the leveling line 40R, that is, a position along the front edge of the cutting line frame 30F and the front edge of the main frame 10.
[0029]
The distance La between the cutting line 40F and the leveling line 40R in the front-rear direction is set as follows. As shown in FIG. 13, the cutting line 40F is always linear as shown by the solid line in the figure, but as shown in FIGS. 13 and 14 due to the reaction force from the semi-cured mortar block M at the time of cutting. Curves backwards like a bow. Similarly, the leveling line 40R is curved when it comes into sliding contact with the cut surface Mb. Here, since the tension of the cutting line 40F is set to be larger than the leveling line 40R, the maximum displacement Lb in the front-rear direction of the cutting line 40F due to bending is larger than the maximum displacement Lc of the leveling line 40R. small. Therefore, the shortest distance Ld in the front-rear direction of the cut line 40F and the leveling line 40R at the time of bending is larger than the distance La in the front-rear direction when both the wires 40F, 40R are in a straight state.
[0030]
The shortest distance Ld between the two wire rods 40F and 40R at the time of bending, the transport speed of the semi-cured mortar block M by the two conveyors Ca and Cb, and the reciprocating cycle of the cutting wire 40F and the leveling wire 40R (one reciprocation) With this setting, as shown in FIG. 16, the run-in line 40R is a sine curve having an antiphase with respect to the locus of the sine curve on the cut surface Mb. A trajectory of a shape is drawn. Since the tension of the leveling line 40R varies as described above, there is variation in the phase of the leveling line 40R, but this variation is within an allowable range.
[0031]
In the present embodiment, the specification is as follows. The cutting wire 40F is a piano wire (SWP-B type) having a wire diameter of 0.8 mm, and the pretension (tension in a state where cutting is not performed) is 866 N (98 kgf). The leveling wire 40R has a wire diameter of 0.8 mm, the same as the cutting wire 40F, but the material is a hard steel wire (SWP-60A), and the pre-tension (tension without cutting) is 112.8N ( 11.5 kgf). Moreover, the space | interval of the front-back direction of the cutting line 40F and the leveling line 40R is 45 mm. The swing cycle of the cutting line 40F and the leveling line 40R is 300 cycles / min. The conveyance speed of the semi-cured mortar block M is 5 m / min.
[0032]
In addition to the above specifications, the following are possible. The pre-tension of the cutting line 40F can be set in a range of 294.2 to 1176.8 N (30 to 120 kgf). Further, the pretension of the leveling line 40R can be set to a value of 10 to 30% of the cutting line 40F. Moreover, the material of the cutting wire 40F may be a hard steel wire. However, it is necessary to select a material having a higher tensile strength than the leveling line 40R. Furthermore, the interval between the cutting line 40F and the leveling line 40R in the front-rear direction can be set in the range of 15 to 50 mm. Moreover, the conveyance speed of the semi-hardened mortar block M can be set in the range of 3-10 m / min.
[0033]
Next, the operation of this embodiment will be described.
As shown in FIG. 2, the cutting device A is set at a cutting position Pa between the first conveyor Ca and the second conveyor Cb, and the driving means 15 drives both the cutting line frame 30F and the leveling line frame 30R to reciprocate. In this state, the semi-cured mortar block M placed on the first conveyor Ca is conveyed toward the second conveyor Cb. When the transport direction front end of the semi-cured mortar block M enters the main frame 10, a plurality of cutting lines 40F come into contact with the semi-cured mortar block M to start cutting the semi-cured mortar block M. . As shown in FIG. 14, as the semi-cured mortar block M is conveyed, the cutting progresses, and the leveling line 40R enters the gap formed by the cutting line 40F, and the cut surface Mb. Slid in contact. Thereby, the striped pattern formed on the cutting surface Mb by the cutting line 40F is scraped off by the sliding contact of the smoothing line 40R, and the cutting surface Mb is smoothed to become the smoothing surface Ma.
[0034]
At this time, the cutting line frame 30F and the leveling line frame 30R shown in FIG. 1 are reciprocally driven by the common drive means 15 at the same stroke and the same speed, and the reciprocating forms of both the frames 30F and 30R are opposite to each other. It becomes a phase. Therefore, on the cut surface Mb, the striped pattern is erased while the run-in line 40R moves along a locus of a sine curve having an approximately opposite phase with respect to the sine locus of the cutting line 40F.
In addition, when the subsequent leveling line 40R enters the gap formed by the cutting line 40F, there is a concern that the leveling line 40R may sway in the left-right direction and be caught by a portion that is out of the gap entrance by the cutting line 40F. The However, in this embodiment, as shown in FIG. 14, since the compression coil spring 53 is provided on the leveling line 40R as a tension relaxation means for alleviating the increase in tension, the leveling line 40R has a gap formed by the cutting line 40F. Even when the coil is caught at the inlet, the tension is prevented from becoming excessive due to the compression of the compression coil spring 53. Then, at the next moment, when the position of the leveling line 40R returns to the original position, the leveling line 40R smoothly returns to the gap formed by the cutting line 40F while the compression coil spring 53 is elastically restored. Therefore, it is avoided that the leveling line 40R cuts the semi-cured mortar block M through a path different from that of the cutting line 40F or widens the gap by the cutting line 40F.
[0035]
When the cutting and smoothing of the cutting surface Mb proceed as described above, and the semi-cured mortar block M passes through the cutting device A and is transferred to the second conveyor Cb, the cutting is completed. In the cutting process, a reaction force acts on the cutting line 40F from the semi-cured mortar block M side, and the reaction force is received by the support surface 23 of the main frame 10 on the support roller 37 provided on the cutting line frame 30F. Therefore, the cutting line frame 30F is not rattled in the front-rear direction.
[0036]
Further, since the cut line frame 30F and the leveling line frame 30R are reciprocated in the vertical direction, the frames 30F and 30R are bottom dead centered by the inertial force accompanying the reciprocating drive and the gravity acting on the frames 30F and 30R. When turning back, there is a concern that the load on the link arms 20F, 20R, the crankshaft 17 and the like of the driving means 15 becomes excessive. However, since the frames 30F and 30R are elastically supported by the airbags 39F and 39R shown in FIG. 7 as buffer means from below, the load on the drive means 15 is reduced. Further, the occurrence of vibration due to the reciprocal movement of both frames 30F and 30R is also prevented.
[0037]
When the cutting line 40F or the leveling line 40R breaks during cutting, the operation is interrupted after the semi-cured mortar block M has passed through the cutting device A in FIG. After taking out to the position Pb, another cutting apparatus A that has been waiting in advance is set at the cutting position Pa. That is, instead of replacing the broken wire while the cutting device A is fixed at the cutting position Pa, the entire cutting device A is replaced. Even when the wire does not break, even when the wire is replaced by regular maintenance, all the wires can be replaced at the same time in the cutting process.
[0038]
When the cutting device A is replaced, a power cable (not shown) for supplying power to the motor 16 and an air supply pipe for supplying air to the air cylinder 42 and the airbags 39F and 39R are respectively provided. The power supply and the compressor 48 are once disconnected, and the power cable and the air supply pipe of the newly set cutting apparatus A are reconnected.
As described above, in the present embodiment, as shown in FIG. 2, between the cutting position Pa in the movement path of the semi-cured mortar block M and the retreat position Pb outside the movement path of the semi-cured mortar block M. Of the cutting line frame 30F that collectively supports the plurality of cutting lines 40F and the leveling line frame 30R that collectively supports the plurality of leveling lines 40R. Both are provided so as to be reciprocally movable with respect to the main frame 10, and driving means 15 for reciprocating both the frames 30 </ b> F and 30 </ b> R is provided on the main frame 10. Therefore, when the broken wires are replaced together for replacement or maintenance, the cutting wire frame 30F or the leveling wire frame 30R that supports the wires to be replaced is integrated with the driving means 15 and the main frame 10. Then, the cutting apparatus A on which a new wire is supported in advance is moved to the cutting position Pa in advance. As described above, according to the present embodiment, when replacing with a new wire, it is only necessary to replace the main frame 10 in a cassette type. Therefore, at the site of the cutting process, the wire is subframe (cut wire frame 30F or The time-consuming work of replacing the leveling line frame 30R) becomes unnecessary. Thereby, the time for exchanging the wire is shortened, that is, the time for stopping the operation accompanying the exchanging operation is shortened, and the work efficiency is excellent.
[0039]
Further, as shown in FIG. 1, since the cutting line frame 30F and the leveling line frame 30R are provided independently, if both the frames 30F and 30R are driven by separate driving means, the cutting line frame 30F is cut off. The degree of freedom in setting the reciprocating speed of the leveling line 40R and the phase between them is increased. In addition, since the two frames 30F and 30R are supported by the single main frame 10, both the frames 30F and 30R can be exchanged simultaneously in one operation, and the exchanging efficiency is excellent.
[0040]
Further, since the means for reciprocating the cut line frame 30F and the leveling line frame 30R is the common drive means 15, simplification of the drive means is realized as compared with the case where each frame is individually driven. .
Further, the cutting line frame 30F is provided with a plurality of air cylinders 42 shown in FIG. 7 connected to the end of each cutting line 40F, and by supplying uniform air pressure to the plurality of air cylinders 42. Since the plurality of cutting lines 40F are set to have a uniform tension, even if there are variations in the wire diameter or length of the cutting lines 40F, the tensions of all the cutting lines 40F are made uniform and uniform. Cutting can be done. Moreover, since the air cylinder 42 as the tension applying means for the cutting line 40F is provided in the cutting line frame 30F, the cutting line 40F and the tension applying means can be exchanged together.
[0041]
Further, in a structure in which a plurality of leveling lines are alleviated by an increase in tension by a common tension relaxing means, when a tension relaxation operation is performed on one leveling line, other leveling lines are slackened. May occur. However, in the present embodiment, as shown in FIG. 14, the leveling lines 40R are individually relaxed by the compression coil springs 53 as the tension relaxation means, so that the leveling lines 40R are loosened. There is no.
Further, since the compression coil spring 53 having a simple structure is used as the tension relaxation means, the cost can be reduced as compared with the case where a complicated elasticity applying mechanism such as an air cylinder is used.
[0042]
Further, since the leveling line 40R is moved along a trajectory having an opposite phase to the trajectory of the cutting line 40F on the cutting plane Mb, fringes formed along the trajectory of the cutting line 40F on the cutting plane Mb. The leveling line 40R moves with respect to the pattern so as to cancel the striped pattern. Thereby, the striped pattern is surely erased and a smooth cut surface Mb can be obtained.
As a means for setting the leveling line 40R to have a phase opposite to that of the cutting line 40F, the reciprocating cycle of the leveling line 40R and the leveling line 40R may be the same, and the moving speeds of both wires may be different from each other. Therefore, the form of reciprocating movement of the cutting line 40F and the leveling line 40R is not limited to the case where both wires reciprocate in opposite directions and with the same stroke, and may reciprocate in the same direction. It is also possible to make the strokes or amplitudes of the reciprocating movements different from each other.
[0043]
  [Other Embodiments]
  The present invention is not limited to the embodiment described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
[0044]
  (1) In the above embodiment, the cutting line and the run-in line are reciprocally moved in the opposite directions and with the same stroke. However, according to the present invention, the cutting line and the run-in line are reciprocated in the same direction. Alternatively, the strokes or amplitudes of the reciprocating movement may be different from each other.
[0045]
  (2In the above embodiment, the cutting line subframe and the leveling line subframe are reciprocated by the common drive means. However, according to the present invention, the leveling line subframe and the leveling line are used. The sub-frames may be reciprocated by individual driving means.
  (3In the above embodiment, the cut line and the run-in line are driven to reciprocate in the vertical direction. However, according to the present invention, the cut line and the run-in line may be driven to reciprocate in the horizontal direction.
[Brief description of the drawings]
FIG. 1 is a perspective view of a cutting device according to a first embodiment.
FIG. 2 is a plan view showing a moving path of a cutting device and a semi-cured mortar block.
FIG. 3 is a longitudinal sectional view of a cutting device
FIG. 4 is a plan view of a cutting device.
5 is a sectional view taken along line XX in FIG.
6 is a sectional view taken along line YY in FIG.
FIG. 7 is a partially enlarged front view of an airbag as a buffer means.
FIG. 8 is a vertical sectional view showing a state in which the cutting frame is located at the upper start point and the leveling frame is located at the bottom dead center.
FIG. 9 is a longitudinal sectional view showing a state in which the cutting frame is located at the lower start point and the leveling frame is located at the top dead center.
FIG. 10 is a longitudinal sectional view showing a state in which the cutting frame and the leveling frame are removed from the driving means.
FIG. 11 is a partially enlarged longitudinal sectional view showing a connecting position between a rotating member and a link arm in the driving means.
FIG. 12 is a partial perspective view showing a structure for applying tension to a cutting line.
FIG. 13 is a partially enlarged longitudinal sectional view showing a state in which a cutting line and a run-off line are curved.
FIG. 14 is a partially enlarged longitudinal sectional view showing a state in which a semi-cured mortar block is cut by a cutting line and a cut surface is smoothed by a running line.
FIG. 15 is a partially enlarged longitudinal sectional view showing a state in which a semi-cured mortar block is cut by a cutting line and a cut surface is smoothed by a running line.
FIG. 16 is a graph showing the relationship between the trajectory of the cut line and the trajectory of the cut line on the cut surface;
[Explanation of symbols]
A ... Cutting device
M ... Semi-cured mortar block
Ma ... False surface
Mb ... Cut surface
10 ... Mainframe
15 ... Drive means
18, 19 ... Rotating member
30F ... cutting line frame (sub-frame for cutting line)
30R ... Run-in line frame (sub-frame for run-in line)
39F ... Airbag (buffer means for cutting line)
39R ... Airbag (buffering means for leveling wire)
40F ... cutting line
40R ... Run-in line
42 ... Air cylinder
53 ... Compression coil spring (tension relaxation means)

Claims (5)

A plurality of cutting lines that are reciprocally driven in the length direction are provided in parallel, and a plurality of leveling lines that are reciprocated in the length direction are provided in parallel to form a pair with each of the cutting lines, While moving the semi-cured mortar block closer to the cutting line and the leveling line in a direction perpendicular to the reciprocating direction, the semi-cured mortar block is cut by the cutting line, and the cutting line is cut. In the cutting device of the semi-cured mortar block in which the leveling line is brought into sliding contact with the formed cut surface to smooth the cut surface,
A main frame capable of moving between a cutting position in the moving path of the semi-cured mortar block and a retracted position outside the moving path of the semi-cured mortar block;
A sub-frame for a cutting line that collectively supports the plurality of cutting lines provided on the main frame and guided so as to be able to reciprocate in the length direction of the cutting line;
A sub-frame for leveling lines that collectively supports the plurality of leveling lines provided on the main frame and guided so as to reciprocate in the lengthwise direction of the leveling lines;
A semi-cured mortar block cutting device provided on the main frame, comprising a driving means for reciprocatingly driving the cutting line subframe and the leveling line subframe.   The driving means is configured to reciprocate the two subframes by connecting the cutting line subframe and the leveling line subframe to an eccentric position in the rotating member. The semi-cured mortar block cutting device according to claim 1. The cutting line subframe and the leveling line subframe are reciprocated in the vertical direction.
Buffer means for supporting the cutting-line subframe from below immediately before the cutting-line subframe reaches bottom dead center;
2. A shock absorber for elastically supporting the leveling line subframe from below immediately before the leveling line subframe reaches bottom dead center. The semi-cured mortar block cutting device according to 2.   The cutting frame sub-frame is provided with a plurality of air cylinders connected to ends of the cutting lines, and the air pressure is uniformly supplied to the plurality of air cylinders. The semi-cured mortar block cutting device according to any one of claims 1 to 3, wherein the line is set to have a uniform tension.   The tension | tensile_strength relaxation means which relieves the increase in the tension | tensile_strength of the said leveling line is provided in the subframe for said leveling line, The Claim 1 thru | or 4 characterized by the above-mentioned. Semi-cured mortar block cutting device.

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