JP2012232391A - Dry ice cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dry ice cutter doing without a worker holding the dry ice when it is cut.SOLUTION: The cutter 1 includes: a horizontal supporting base 205; a placing base 206; and conveyor base 301. The horizontal supporting base is arranged in a horizontal direction between a pair of saw wheels 201 and 202, and has a space 208 in which a band saw 203 is passable. The placing base for placing dry ice 100 has a pair of front-back direction guide plate 209 which is installed to be movable in the front-back direction of a cutting direction by the band saw 203 on the horizontal supporting base 205 to guide the front and back of the dry ice 100, and which includes a clearance 210 through which the band saw 203 is passable. The conveyor base includes a pair of right-left direction guide plate 306 which is installed to be movable in the right-left direction vertical to the cutting direction by the band saw 203 to guide the right and left of the dry ice 100, and which is movable in the front-back direction while being positioned between the pair of front-back direction guide plates 209.

Description

  The present invention relates to a dry ice cutting apparatus.

  When cutting dry ice, generally, a dry ice cutting device including a band saw wound around a pair of upper and lower saw wheels is used (see, for example, Patent Document 1).

  When using such a dry ice cutting device, the operator holds the dry ice, and the dry ice is cut by pressing and moving the dry ice against the belt saw that is moved around.

JP 2008-6563 A

  However, in the conventional dry ice cutting device, the dry ice is easy to slide on the mounting table of the cutting device, and the operator's hand holding the dry ice is positioned in the vicinity of the rotating band saw. There is a problem that the skill and attention of the worker are highly required.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a dry ice cutting device that does not require an operator to hold dry ice during cutting.

  To achieve the above object, the present invention provides a band saw mounted on a pair of upper and lower rotatable saw wheels, and a space portion that is horizontally disposed between the pair of saw wheels and through which the band saw can pass. A pair of front and rear provided with a horizontal support having a gap portion through which the band saw can be guided while being able to guide the front and rear of the dry ice, which is installed on the horizontal support so as to be movable in the front-rear direction which is the cutting direction by the band saw A mounting table for mounting dry ice having a direction guide plate, and a pair of front and rear can be installed to be movable in the left-right direction, which is a direction perpendicular to the cutting direction by the band saw, and can guide the left and right of the dry ice A dry ice cutting device comprising: a transport table having a pair of left and right direction guide plates that can move forward and backward in a state of being positioned between the direction guide plates.

  According to the present invention, it is possible to provide a dry ice cutting device that does not require an operator to hold dry ice during cutting.

It is the perspective view seen from the front side showing the whole dry ice cutting device composition concerning one embodiment of the present invention. It is the perspective view seen from the rear surface side which shows the whole structure of the cutting device of the dry ice shown by FIG. It is a perspective view which shows the band saw apparatus shown by FIG. It is a perspective view which shows the positioning conveyance apparatus shown by FIG. It is a block diagram which shows the control structure of the cutting device of the dry ice of this embodiment. It is a flowchart which shows the procedure of the cutting process in a cutting device.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a perspective view of the overall configuration of a dry ice cutting device according to an embodiment of the present invention as seen from the front side. FIG. 2 is a perspective view showing the overall configuration of the dry ice cutting device shown in FIG. 1 as seen from the rear side. FIG. 3 is a perspective view showing the band saw device shown in FIG. FIG. 4 is a perspective view showing the positioning and conveying apparatus shown in FIG. For clarity of explanation, the front-rear and left-right directions are set as shown in FIGS.

  As shown in FIG. 1, the dry ice cutting device 1 includes a band saw device 2 for cutting the dry ice 100 and a positioning transport device 3 for positioning and transporting the dry ice 100. In addition, the dry ice 100 after throwing into the cutting device 1 is shown with a dashed-two dotted line in FIG. 1 (same also in FIG. 2).

  As shown in FIG. 2, the band saw device 2 includes a pair of upper and lower rotatable saw wheels 201 and 202, and a band saw 203 mounted on the pair of saw wheels 201 and 202. The band saw 203 is endless and flexible, and a saw blade 204 for cutting is formed at the front end thereof.

  The pair of saw wheels 201 and 202 are rotatably attached to the upper and lower parts of the machine body 212, respectively, and are covered with a cover (not shown) during operation. The saw wheel 202 located below is rotated by a band saw drive motor 509 (see FIG. 1) disposed in the machine body 212. As a result, the band saw 203 circulates in the belt-like longitudinal direction along the outer periphery of the pair of saw wheels 201 and 202 at high speed, that is, rotates.

  Further, the band saw device 2 is installed so as to be movable in the front-rear direction which is a cutting direction by the band saw 203 on the horizontal support table 205 and a horizontal support table 205 disposed in a horizontal direction between the pair of saw wheels 201 and 202. And a mounting table 206 on which the dry ice 100 is mounted.

  The mounting table 206 is movable on the horizontal support table 205 by a slide mechanism 207. The slide mechanism 207 includes, for example, a rail laid on the upper surface of the horizontal support table 205 and a moving wheel that engages with the rail and is attached to the lower surface of the mounting table 206, but is not limited thereto. is not.

  The mounting table 206 is moved in the front-rear direction by the driving force of the front-rear direction driving motor 512 (see FIG. 5). Here, the rotational motion of the front-rear direction drive motor 512 is converted into a linear motion in the front-rear direction of the mounting table 206 via a feed screw mechanism (not shown) having a screw shaft and a nut portion screwed on the screw shaft. Is done.

  Therefore, the mounting table 206 can move in the front-rear direction between a retracted position located on the front side (front side) of the band saw 203 and an entry position located on the rear side (back side) of the band saw 203. The cutting device 1 is provided with sensors 510 (see FIG. 5) such as a mounting table detection sensor that detects the position of the mounting table 206. In addition, the code | symbol 213 in a figure shows the protection member for rotating so that it may be located ahead of the saw blade 204 when the mounting base 206 exists in a retracted position, and protecting an operator.

  As shown in FIG. 3, the horizontal support base 205 is fixed to the machine body 212 and has a space 208 through which the band saw 203 can pass. The mounting table 206 has a pair of front-rear direction guide plates 209 that can guide the front and rear of the dry ice 100 and include a gap 210 through which the band saw 203 can pass. The bottom plate 211 of the mounting table 206 is divided into left and right, and the space formed between the divided parts corresponds to the gap portion 210 in the left and right direction position.

  In the present embodiment, the pair of front and rear direction guide plates 209 are spaced apart from each other by a distance slightly larger than one side (vertical or horizontal dimension) of the square dry ice 100 in plan view, and are placed on the bottom plate 211 of the mounting table 206. It is fixed by a screw member or the like. However, one of the pair of front and rear direction guide plates 209 may be fixed on the bottom plate 211, and the other may be configured to be movable back and forth in the front and rear direction toward one by a driving device (not shown). In this way, the distance between the pair of front and rear guide plates 209 can be adjusted according to the dimensions of the dry ice 100, and the dry ice 100 can be reliably held in the front and rear direction.

  As shown in FIG. 4, the positioning conveyance device 3 includes a conveyance table 301 that is installed so as to be movable in the left-right direction, which is a direction perpendicular to the cutting direction by the band saw 203.

  The transport table 301 can be moved on a support 302 by a slide mechanism 303. The slide mechanism 303 is, for example, a linear guide mechanism having a pair of parallel rails 304 laid on the upper surface of the support 302 and at least a pair of guides 305 engaged with the pair of rails 304. It is not something that can be done.

  The carriage 301 is moved in the left-right direction by the driving force of the left-right direction driving motor 513 (see FIG. 5). Here, the rotational motion of the left / right direction driving motor 513 is converted into the lateral motion of the transport base 301 through a feed screw mechanism (not shown) having a screw shaft and a nut portion screwed on the screw shaft. Is done.

  Therefore, the conveyance stand 301 moves in the left-right direction between the carry-in position when carrying in the dry ice 100 (see FIG. 1) and the carry-out position when carrying out the dry ice 100. In addition, the conveyance stand 301 in the unloading position is indicated by a broken line in FIG. 1 (the same applies to FIG. 2). Of the sensors 510 (see FIG. 5) provided in the cutting apparatus 1, a first carrier table sensor (not shown) detects that the carrier table 301 is in the carry-in position, and the second carrier table A sensor (not shown) is configured to detect that the carriage 301 is in the unloading position.

  In addition, the positioning and conveying device 3 includes a support plate 314 that supports the dry ice 100 sent from a conveyer (not shown), and a receiving plate 315 that receives the dry ice 100 supported on the support plate 314. I have. The dry ice 100 on the support plate 314 is pushed forward by an extrusion cylinder (not shown) and carried onto the receiving plate 315. The support plate 314 has a vertical drive cylinder (not shown) between an upper position when the dry ice 100 is received from the conveyor and a lower position when the dry ice 100 is pushed toward the receiving plate 315. It can be moved up and down by the driving force.

  In the cutting section of the dry ice 100 set between the carrying-in position and the carrying-out position, the carrying table 301 of the positioning and conveying device 3 is cut once by the mounting table 206 (see FIG. 3) reciprocating in the front-rear direction. Each time it moves, it moves in the feed direction (left-right direction) by a predetermined amount. Here, when a mounting table detection sensor (not shown) of the sensors 510 (see FIG. 5) detects that the saw blade 204 is about 10 mm away from the dry ice 100 after cutting, it is determined that one cutting is completed. The

  Further, the transport table 301 has a pair of left and right guide plates 306 that can guide the left and right sides of the dry ice 100. The left-right direction guide plate 306 is configured to be movable back and forth in the front-rear direction by a telescopic mechanism 307 that can be expanded and contracted by itself while being positioned between a pair of front-rear direction guide plates 209 (see FIG. 3).

  Here, the pair of left and right direction guide plates 306 are respectively fixed to the pair of expansion and contraction mechanisms 307 by screw members or the like, and the left and right direction guide plates 306 are fixed so as to hang downward near the rear end of the expansion and contraction mechanism 307. Has been. The pair of expansion / contraction mechanisms 307 are fixed to the bottom plate 309 of the transport table 301 by a screw member or the like via a pair of connecting members 308. As a result, each of the pair of left and right guide plates 306 is separated by a distance slightly larger than one side (vertical or horizontal dimension) of the dry ice 100. However, one of the pair of connecting members 308 may be fixed on the bottom plate 309, and the other may be configured to be movable back and forth in the left-right direction toward one by a driving device (not shown). In this way, the distance between the pair of left and right guide plates 306 can be adjusted according to the size of the dry ice 100, and the dry ice 100 can be reliably held in the left and right direction.

  The telescopic mechanism 307 is, for example, a slide rail configured such that an outer rail and an inner rail engaged with the outer rail are relatively movable in the longitudinal direction by a rotating member such as a ball or a roller inserted between the outer rail and the inner rail. There is, but is not limited to such a structure.

  Further, the transport base 301 is configured to be movable in the left-right direction so that the left-right direction guide plate 306 is retracted and passes between the front-rear direction guide plates 209 (see FIG. 3). In other words, the carriage 301 is configured to move while the expansion / contraction mechanism 307 is contracted.

  Returning to FIG. 2, the cutting device 1 rotates the transported dry ice 100 guided by the left-right direction guide plate 306 and passed between the front-rear direction guide plates 209 by 90 degrees in the horizontal plane. A rotation mechanism 310 for returning between the guide plates 306 is further provided. Here, 90 degrees is an angle that is 90 degrees or an angle that approximates this and does not interfere with the operation of the cutting apparatus 1. In this embodiment, the rotation mechanism unit 310 operates when information instructing cutting in both the vertical and horizontal directions is input through the input unit 504 (see FIG. 5).

  The rotation mechanism unit 310 includes a support plate 311 and a receiving plate 312 that is rotatably provided on the support plate 311 and receives the dry ice 100 that is sent between the front and rear direction guide plates 209. The support plate 311 can be moved up and down by the driving force of the vertical driving cylinder 514.

  Therefore, the receiving plate 312 is an upper position when receiving the dry ice 100 sent between the front and rear direction guide plates 209, a lower position when rotating the dry ice 100 by 90 degrees, and an intermediate position between them. Then, it moves up and down between the intermediate positions when the dry ice 100 that has been cut is discharged.

  The receiving plate 312 is rotated by a driving force of a rotation direction driving cylinder 515 (see FIG. 5; not shown in FIG. 2 and the like). The rotation direction driving cylinder 515 engages with an engaging portion (not shown) provided on the receiving plate 312 and expands and contracts in the horizontal direction, thereby causing the receiving plate 312 to move 90 degrees forward and backward in the horizontal plane. It is configured to be able to rotate. In addition, the receiving plate 312 may be configured to be rotated by an electric motor (not shown).

  Further, the dry ice 100 on the receiving plate 312 is configured to be discharged onto the conveyor 316 by being pressed rightward by an extrusion cylinder (not shown) at an intermediate position.

  FIG. 5 is a block diagram showing a control configuration of the dry ice cutting device of the present embodiment. As shown in FIG. 5, the dry ice cutting device 1 includes a controller 501, a storage unit 502, a recording medium read / write unit 503, an input unit 504, and a display unit 505, which are mutually connected via a bus line 506. Is communicably connected.

  The controller 501 is a CPU (Central Processing Unit), and controls each part in the apparatus and performs various arithmetic processes according to a program. A storage unit 502 includes a ROM (Read Only Memory) that stores various programs and parameters in advance, a RAM (Random Access Memory) that temporarily stores programs and data as a work area, and a flash memory that stores various programs and parameters. Alternatively, an EEPROM (Electronically Erasable and Programmable ROM) is provided. The recording medium reading unit 503 reads programs and data stored in a recording medium (not shown) such as an optical disk or a magnetic disk. The program and data read by the recording medium reading unit 503 are transferred to the storage unit 502 and stored therein.

  The input unit 504 receives input of the amount of movement of the transport table 301 per cutting in the cutting section of the dry ice 100 and other various data. The display unit 505 displays input data from the input unit 504 and other various data.

  In addition, various signals such as a detection signal from the sensors 510, a detection signal indicating that the power switch 508 is turned on, and a detection signal indicating that the band saw driving motor 509 is operating are sent to the bus line 506 via the input interface 507. Via the controller 501.

  Various drive signals are transmitted from the controller 501 via the bus line 506 and via the output interface 511 to the front-rear direction driving motor 512, the left-right direction driving motor 513, the vertical direction driving cylinder 514, and the rotational direction driving. It is sent to the cylinder 515 or the like.

Next, the operation of the dry ice cutting apparatus 1 configured as described above will be described.
FIG. 6 is a flowchart showing the procedure of the cutting process in the dry ice cutting apparatus 1. 6 is stored as a control program in the storage unit 502, read out to the RAM in the storage unit 502, and executed by the controller 501 at the start of the operation.

  As a premise, the operator uses the input unit 504 to indicate information such as the amount of movement (feed amount) of the carriage 301 per cutting in the cutting section of the dry ice 100 and whether to perform cutting in both vertical and horizontal directions. Input for 1 Then, the operator turns on the power switch 508 to operate the band saw driving motor 509.

  As shown in FIG. 6, the controller 501 waits until the dry ice 100 is carried into the receiving plate 315 in a state where the carriage 301 is located at the carry-in position (S10; No). Here, the carry-in of the dry ice 100 to the receiving plate 315 is detected by, for example, a limit switch, a load sensor (both not shown), or the like.

  When the dry ice 100 is carried into the receiving plate 315 (S10; Yes), the controller 501 calculates an initial position in a preset cutting section of the dry ice 100, and moves the transport base 301 to the initial position. Next, the left and right direction driving motor 513 is operated (S20).

  In step S30, the controller 501 operates the front-rear direction drive motor 512 to reciprocate the mounting table 206 in the cutting section of the dry ice 100 in the front-rear direction (S30). As a result, the dry ice 100 moves forward and backward in the front-rear direction while being guided by the front-rear direction guide plate 209 and the left-right direction guide plate 306, and is cut once.

  In step S <b> 40, the controller 501 determines whether or not the transport platform 301 has reached the final position of the preset cutting section of the dry ice 100. The final position of the cutting section is the position of the final cutting in the continuous cutting in the vertical or horizontal direction. If the transport table 301 has not reached the final position (S40; No), the controller 501 operates the left-right drive motor 513 so as to move the transport table 301 in the feed direction by a predetermined amount (S50). ), The process returns to step S30. Thereby, the dry ice 100 is moved in the feeding direction (right direction) by a predetermined amount in preparation for the next cutting.

  When the conveyance table 301 has reached the final position (S40; Yes), the controller 501 operates the left-right drive motor 513 so as to move the conveyance table 301 to the carry-out position (S60). Thereby, the dry ice 100 is moved on the receiving plate 312 in the upper position.

  In step S70, the controller 501 determines whether or not the cutting of the dry ice 100 has been completed. Here, when cutting in both the vertical and horizontal directions is set, it is determined whether cutting in both the vertical and horizontal directions is completed. When it is determined that the cutting is finished (S70; Yes), the controller 501 advances the process to step S110.

  When it is determined that the cutting in one direction of the vertical and horizontal directions has been completed but the cutting in the other direction has not been completed yet (S70; No), the controller 501 has the dry ice 100 mounted thereon. The vertical driving cylinder 514 is operated so as to lower the receiving plate 312 to the lower position (S80).

  Subsequently, the controller 501 operates the rotation direction driving cylinder 515 so as to rotate the receiving plate 312 on which the dry ice 100 is placed by 90 degrees in the horizontal plane (S90). Thereafter, the controller 501 operates the vertical drive cylinder 514 to raise the receiving plate 312 to the upper position (S100), and then returns the process to step S20. As a result, cutting in the other of the vertical and horizontal directions is started.

  In step S110, the controller 501 operates the vertical drive cylinder 514 so as to lower the receiving plate 312 on which the dry ice 100 that has been cut is placed to an intermediate position.

  Subsequently, the controller 501 waits until the dry ice 100 on the receiving plate 312 is discharged onto the conveyor 316 by an extrusion cylinder (not shown) (S120; No). The discharge of the dry ice 100 onto the conveyor 316 is detected by, for example, a limit switch or a load sensor.

  When the controller 501 determines that the dry ice 100 has been discharged onto the transfer conveyor 316 (S120; Yes), the controller 501 operates the vertical drive cylinder 514 to raise the receiving plate 312 to the upper position, and then the transfer table. The left-right direction driving motor 513 is operated so as to move 301 to the loading position (S130). As a result, preparation for the next dry ice 100 is prepared.

  As described above, the dry ice cutting device 1 of the present embodiment is disposed horizontally between the pair of saw wheels 201, 202, and has a horizontal support base 205 having a space 208 through which the band saw 203 can pass, A pair of front and rear direction guide plates 209 provided on the horizontal support table 205 so as to be movable in the front-rear direction, which is the cutting direction by the band saw 203, and capable of guiding the front and rear of the dry ice 100 and having the gap 210 through which the band saw 203 can pass. And a pair of front and rear directions that can be moved in the left-right direction, which is perpendicular to the cutting direction by the band saw 203, and can guide the left and right sides of the dry ice 100. A transport table 301 having a pair of left and right guide plates 306 that can be moved back and forth in the front-rear direction while being positioned between the guide plates 209. To have.

  According to this configuration, the dry ice 100 is moved while being guided by the front-rear direction guide plate 209 and the left-right direction guide plate 306, and is cut by the cutting device 1. That is, it is possible to provide a dry ice cutting device that does not require an operator to hold dry ice during cutting.

  In this embodiment, the carriage 301 is configured to be movable in the left-right direction so that the left-right direction guide plate 306 is retracted before the band saw 203 and passes between the front-rear direction guide plates 209. Yes. According to this configuration, the carriage 301 moves with the expansion / contraction mechanism 307 contracted. Therefore, since the reaction force moment received from the dry ice 100 when the conveyance table 301 is moved left and right is reduced, the horizontal guide plate 306 is prevented from being deformed or damaged.

  Further, in the present embodiment, the dry ice 100 guided by the left-right direction guide plate 306 and fed between the front-rear direction guide plates 209 is rotated 90 degrees in the horizontal plane and returned between the left-right direction guide plates 306. A rotation mechanism unit 310 is further provided. According to this configuration, it is possible to provide a dry ice cutting device that does not require an operator to hold dry ice even when cutting in both vertical and horizontal directions.

  Furthermore, the cutting device 1 may include a measuring unit that measures a width dimension in a direction perpendicular to the cutting direction of the dry ice 100 to be charged. As the measuring means, for example, the distance between the inner surfaces of both reference plates when the dry ice 100 is sandwiched between a pair of reference plates that can be moved closer to and away from each other by a feed screw mechanism having a screw shaft and a nut portion screwed into the screw shaft. Examples include those that are calculated based on the amount of rotation of the screw shaft, and those that calculate the width dimension by analyzing an image obtained by viewing the dry ice 100 in plan view. Then, the controller (control means) 501 determines the amount of movement of the transport table 301 in the feed direction for each cut when the dry ice 100 is cut based on the width dimension of the dry ice 100 measured by the measurement means. It may be configured to control. Here, when cutting in both the vertical and horizontal directions is set, the vertical and horizontal width dimensions are measured, and when not, one width dimension is measured. According to this configuration, the amount of movement in the feed direction can be determined by dividing the width dimension by the number of divisions input by the operator, whereby the cutting width of the dry ice 100 can be made uniform. In this case, the pair of front and rear direction guide plates 209 and the pair of left and right direction guide plates 306 are configured to be close to and away from each other, and are controlled to be adjusted to a separation distance corresponding to the measured width dimension of the dry ice 100. It is desirable that

  As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to the structure described in the said embodiment, The combination thru | or selecting suitably the structure described in the said embodiment is included. The configuration can be changed as appropriate without departing from the spirit of the invention. For example, in the embodiment, driving means such as a cylinder and a motor are used, but the type of driving means used may be changed as appropriate.

DESCRIPTION OF SYMBOLS 1 Cutting apparatus 2 Band saw apparatus 3 Positioning conveyance apparatus 100 Dry ice 201,202 Saw wheel 203 Band saw 205 Horizontal support stand 206 Mounting stand 208 Space part 209 Front-rear direction guide plate 210 Gap part 301 Conveyance stand 306 Left-right direction guide plate 310 Rotation mechanism part 501 Controller (control means)

Claims (4)

A band saw mounted on a pair of upper and lower rotatable saw wheels;
A horizontal support that is horizontally disposed between the pair of saw wheels and has a space through which the band saw can pass;
A dry guide having a pair of front and rear direction guide plates provided on the horizontal support table so as to be movable in the front and rear direction, which is a cutting direction by the band saw, and capable of guiding the front and rear of the dry ice and having a gap portion through which the band saw can pass. A mounting table for mounting ice;
A pair that can move in the left-right direction perpendicular to the cutting direction by the band saw, can guide the left and right of the dry ice, and can move forward and backward in the state of being positioned between the pair of front-rear direction guide plates A transport table having left and right direction guide plates;
A dry ice cutting device comprising:   The transport table is configured to be movable in the left-right direction so that the left-right direction guide plate is retracted to the front side of the band saw and passes between the front-rear direction guide plates. The dry ice cutting device according to 1.   It further comprises a rotation mechanism for rotating the dry ice guided by the left and right direction guide plates and passing between the front and rear direction guide plates by 90 degrees in a horizontal plane and returning between the left and right direction guide plates. The dry ice cutting device according to claim 1 or 2. Measuring means for measuring the width dimension in the direction perpendicular to the cutting direction of the dry ice to be charged;
Based on the width dimension of the dry ice measured by the measuring means, a control means for controlling the amount of movement in the feed direction of the transport table for each cutting at the time of cutting the dry ice;
The dry ice cutting device according to any one of claims 1 to 3, further comprising:

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