JP2011158414A - Rubber sample collection method and apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate separation from a cutter 16 while stabilizing the shape of a rubber sample 21. <P>SOLUTION: Since a suction pad 36 which can suck and hold the rubber sample 21 is housed in the housing hole 17 of the cutter 16 in such a way as to protrude and be retracted and a spring 46 for biasing the suction pad 36 to the tip side and protruding it from a cutting blade 18 is provided, the suction pad 36 sucks a rubber sheet 12 and restricts its displacements when the rubber sample 21 is cut out to stabilize the shape of the rubber sample 21. Since the suction pad 36 protrudes to the tip side more than the cutting blade 18 by the spring 46 with the rubber sample 21 sucked and held when the rubber sample 21 is cut out, the rubber sample 21 is easily and reliably separated from the cutter 16. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

    The present invention relates to a collection method and apparatus for collecting a rubber sample from a rubber sheet.

    As a conventional rubber sample collection method and apparatus, those described in, for example, Patent Document 1 below are known.

JP-A-5-306975

  This is a cutter having a circular hole at the tip and a cutting blade surrounding the circular hole, and a moving mechanism for cutting the rubber sample from the rubber sheet by the cutting blade of the cutter by moving the cutter toward the rubber sheet; A vacuum source connectable to the circular hole and an air source, and the rubber sample cut out from the rubber sheet by the cutting blade is drawn into the circular hole connected to the vacuum source and held while adhering to the cutter, while the rubber When the sample is detached from the cutter, air from the air source is guided to the circular hole, and the rubber sample is pushed out from the circular hole of the cutter by the air.

    However, in such a conventional rubber sample collecting method and apparatus, since there is no holding member for pressing the rubber sheet when the rubber sample is cut out by the cutter, the rubber sheet is displaced at the time of cutting and the shape of the rubber sample is unstable. There was a problem of becoming. Moreover, when the air is guided to the circular hole and the rubber sample is separated from the cutter, when a part of the rubber sample in the circumferential direction is detached from the cutter, the air is ejected from the removed part and the pressure in the circular hole is reduced. As a result, there is a problem that the rubber sample may not be detached from the circular hole due to the adhesive force between the remaining part of the rubber sample and the cutter (inner surface of the circular hole).

  An object of the present invention is to provide a rubber sample collecting method and apparatus capable of facilitating removal from a cutter while stabilizing the shape of a rubber sample.

    The purpose of this is to firstly move a cutter having a storage hole in which a suction pad is retractable at the tip and a cutting blade surrounding the storage hole to a rubber sheet by a moving mechanism, and the movement The suction pad is pushed by the rubber sheet and pushed into the storage hole, and when the suction pad holds the rubber sheet by suction, a step of cutting the rubber sample from the rubber sheet by the cutting blade, and the cut rubber sample at the tip A method of collecting a rubber sample, comprising: a step of applying a biasing force toward the distal end side of the biasing member to the suction pad held by suction and projecting at least the distal end portion of the suction pad from the cutting edge toward the distal end side. Can be achieved.

  Second, a cutter having a storage hole at the tip and a cutting blade surrounding the storage hole, and a moving mechanism for cutting the rubber sample from the rubber sheet by the cutting blade of the cutter by moving the cutter toward the rubber sheet; A suction pad that is retractably stored in the storage hole and can hold the cut-out rubber sample at the tip, and a biasing force toward the tip side of the suction pad is applied to the suction pad. And an urging member that projects at least the tip of the rubber sheet from the cutting edge toward the tip side, and when the rubber sample is cut from the rubber sheet by the cutting blade, the suction pad is pushed by the rubber sheet while adsorbing the rubber sheet, When the rubber sample is cut out from the rubber sheet, the suction pad holds the rubber sample while holding the rubber sample. The rubber sampling device so as to project distally from the cutting edge, it is possible to achieve.

  In the present invention, there is provided a biasing member capable of retracting and retracting a suction pad capable of sucking and holding a rubber sample in the storage hole of the cutter, and biasing the suction pad toward the tip side so as to protrude from the cutting blade. Since the rubber pad is provided, the suction pad adsorbs and holds the rubber sheet at the time of cutting out the rubber sample and can regulate the displacement of the rubber sheet, thereby stabilizing the shape of the cut out rubber sample. Also, when the rubber sample is cut out, the suction pad protrudes to the tip side from the cutting blade by the urging member with the rubber sample adsorbed and held, so that the rubber sample can be easily and reliably detached from the cutter at this stage. it can.

  Moreover, if comprised as described in Claim 3, the cutting | disconnection of the rubber sheet will become reliable at the time of cutting out a rubber sample, and the shape of a rubber sample will be stabilized. Furthermore, if it comprises as described in Claim 4, after cutting out a rubber sample, a rubber sample can be conveyed to a conveyance conveyor by moving a cutter as it is to a front end side, and work becomes quick and easy. . Moreover, if comprised as described in Claim 5, a rubber sample can be conveyed in the sealed state, and the contamination of the rubber sample surface, the shape change of a rubber sample, etc. can be prevented easily. Furthermore, if constituted as described in claim 6, the rubber sample can be easily and reliably detached from the suction pad.

It is a schematic front view which shows Embodiment 1 of this invention. It is front sectional drawing of the cutter vicinity explaining the cut-out operation | work of a rubber sample. It is front sectional drawing of the cutter vicinity similar to FIG.

Embodiment 1 of the present invention will be described below with reference to the drawings.
In FIGS. 1, 2, and 3, reference numeral 11 denotes a horizontal first conveyor extending in the front-rear direction. When a driving force is applied from a motor (not shown), the first conveyor 11 travels and is extruded from the extruder. The rubber sheet 12 made of the thin strip-shaped unvulcanized rubber is conveyed forward. Reference numeral 13 denotes a horizontal second conveyor installed in front of the first conveyor 11 at a predetermined distance from the first conveyor 11. The second conveyor 13 extends in the front-rear direction on an extension line of the first conveyor 11, and When a driving force is applied from a motor not shown, the vehicle travels and conveys the rubber sheet 12 forward.

  Reference numeral 16 denotes a substantially cylindrical cutter that is installed between the first conveyor 11 and the second conveyor 13 and extends in the vertical direction. The cutter 16 is positioned above the rubber sheet 12 during standby and has a tip (lower end). ) Is formed with a storage hole 17 extending upward on the axis. Further, a cutting edge 18 having a circular planar shape is formed at the tip of the cutter 16 surrounding the storage hole 17, and the cutting edge 18 is bent while being waved at least once in the vertical direction.

  Reference numeral 19 denotes a cylinder as a moving mechanism that is installed immediately above the cutter 16 and extends in the vertical direction. The tip (lower end) of the piston rod 20 of the cylinder 19 is connected to the upper end of the cutter 16. When the cylinder 19 is operated and the piston rod 20 protrudes, the cutter 16 is lowered. When the cutting blade 18 comes into contact with the rubber sheet 12 during the lowering of the cutter 16, the cutting blade 18 is moved to the rubber sheet 12. Is cut into the same shape as the planar shape of the cutting blade 18, here circular, and a disk-shaped rubber sample 21 is cut out from the rubber sheet 12. At this time, since the cutting blade 18 is wavy, the cutting of the rubber sheet 12 by the cutting blade 18 gradually proceeds in the circumferential direction, and the cutting becomes smooth.

  In the above-described embodiment, the planar shape of the cutting edge 18 is circular. However, in the present invention, the planar shape of the cutting edge 18 may be formed of a closed curve such as an ellipse or a rectangle. The shape of the cut rubber sample 21 is the same as this closed curve. Further, in the present invention, as the moving mechanism for cutting the rubber sample 21 from the rubber sheet 12 by the cutting blade 18 of the cutter 16 by moving the cutter 16 toward the rubber sheet 12, a screw mechanism, a rack and pinion mechanism Etc. may be used.

  On the side opposite to the arrangement side (upper side) of the cutter 16 with respect to the rubber sheet 12, here, on the lower side of the rubber sheet 12, there is installed a receiving body 24 that substantially bridges the first conveyor 11 and the second conveyor 13. The upper surface of the receiving body 24 is located on the same plane as the transport surfaces (upper surfaces) of the first and second conveyors 11 and 13. As a result, when the rubber sheet 12 is conveyed forward by the first and second conveyors 11 and 13, the rubber sheet 12 passes while sliding on the upper surface of the receiving body 24. A through hole 25 as an intrusion hole penetrating in the vertical direction is formed in the central portion of the receiving body 24, and when the rubber sample 21 is cut out from the rubber sheet 12, the tip of the cutter 16 enters the through hole 25. .

  Here, a circular cutting edge 26 that forms a pair with the cutting edge 18 is formed at the boundary between the upper surface of the receiving body 24 and the upper end of the through hole 25. As a result, the receiving body 24 cooperates with the cutter 16. Thus, the rubber sample 21 can be cut out from the rubber sheet 12 supported by the receiving body 24 from below. In this way, on the side opposite to the side where the cutter 16 is disposed with respect to the rubber sheet 12, a receiving body 24 for cutting out the rubber sample 21 from the rubber sheet 12 is provided in cooperation with the cutter 16, and the rubber sample 21 is cut out on the receiving body 24. Since the through-hole 25 through which the tip of the cutter 16 sometimes intrudes is formed, the rubber sheet 12 is reliably cut when the rubber sample 21 is cut out, and the shape of the rubber sample 21 is stabilized. In the present invention, the receiver 24 (the cutting edge 26) may be omitted, and the rubber sample 21 may be cut out from the rubber sheet 12 only by the cutting edge 18 of the cutter 16.

  A cylindrical body 29 is integrally formed on the bottom surface (base end face) of the storage hole 17, and an annular front end flange 30 and a base end flange projecting radially inward from the front end and the base end inner periphery of the cylindrical body 29. 31 are provided. Reference numeral 32 denotes a hollow pipe having a central portion loosely fitted in the cylindrical body 29. The outer periphery of the hollow pipe 32 is slidably engaged with the inner ends of the distal end and proximal flanges 30 and 31. An annular spring receiver 33 protruding outward in the radial direction is formed on the outer periphery of the central portion of the hollow pipe 32. The outer periphery of the spring receiver 33 is the inner periphery of the cylindrical body 29 between the distal end and the proximal flanges 30 and 31. Is in sliding contact.

  A suction pad 36 made of vulcanized rubber is fixed to the front end (lower end) of the hollow pipe 32. The lower end of the suction pad 36 opens to the front end surface (lower surface) of the suction pad 36, and the upper end is the hollow pipe. An adsorption chamber 37 communicating with the 32 hollow passages is formed. Then, when the hollow pipe 32 and the suction pad 36 are moved to the upper limit while being guided by the cylindrical body 29, the suction pad 36 is entirely stored in the storage hole 17, and on the other hand, if it moves to the lower limit, at least the tip portion (Lower end portion), here, the whole protrudes toward the tip side from the tip (cutting edge 18) of the storage hole 17. As a result, the suction pad 36 is stored in the storage hole 17 so as to be able to appear and retract.

  A connecting passage 38 extending in the vertical direction is formed in the cutter 16 above (base end side) above the cylindrical body 29, and the upper end portion of the hollow pipe 32 protrudes into the connecting passage 38. As a result, the lower end portion of the connection passage 38 and the hollow passage of the hollow pipe 32 are always in communication. 39 is a first passage having one end connected to the upper end of the connection passage 38 and the other end connected to the switching valve 40. The switching valve 40 has a vacuum source 42 through a second passage 41, and a third passage. A compressed gas source 44 such as compressed air is connected through 43. Then, when the switching valve 40 is switched and the vacuum source 42 and the suction chamber 37 of the suction pad 36 are connected, the pressure in the suction chamber 37 decreases, so the suction pad 36 is cut out at the tip. The rubber sample 21 can be adsorbed and held.

  46 is housed in the cylindrical body 29 and is a spring as an urging member interposed between the base end flange 31 and the spring receiver 33. The spring 46 includes the hollow pipe 32 and the suction pad 36. On the other hand, a biasing force toward the tip side (downward) is applied, and the hollow pipe 32 is moved to the lower limit where the spring receiver 33 abuts against the tip flange 30 of the cylindrical body 29. Thus, when the hollow pipe 32 and the suction pad 36 move to the lower limit, as described above, at least the tip (here, the whole) of the suction pad 36 protrudes from the tip (cutting edge 18) of the storage hole 17 toward the tip. . In the present invention, a rubber tube in which air is hermetically filled and a small air cylinder may be used as the urging member.

  When the suction pad 36 protrudes from the cutting edge 18 to the tip side as shown in FIG. 1, the cylinder 19 operates to lower the cutter 16, and the suction pad 36 is pressed against the rubber sheet 12 on the receiving body 24. Since the lowering of the suction pad 36 is restricted by the rubber sheet 12, the suction pad 36 is pushed by the rubber sheet 12 and pushed into the receiving hole 17, and the spring 46 has the proximal flange 31 and the spring receiver 33. As they approach, they are pushed and compressed. At this time, the switching valve 40 is switched to connect the vacuum source 42 and the suction chamber 37 of the suction pad 36, whereby the suction pad 36 sucks and holds the rubber sheet 12 from above. When the cutter 16 is further lowered in this state, as shown in FIG. 2, the cutting blade 18 of the cutter 16 and the cutting blade 26 of the receiving body 24 cooperate with each other around the portion held by the suction pad 36. The rubber sheet 12 is cut, and a disk-shaped rubber sample 21 is cut out.

  When the rubber sample 21 is cut out from the rubber sheet 12 by the cutting blades 18 and 26 as described above, the suction pad 36 is pushed into the storage hole 17 by being pushed by the rubber sheet 12 while sucking and holding the rubber sheet 12. Here, when the rubber sample 21 is cut out from the rubber sheet 12 as described above, if the rubber sheet 12 in the region surrounded by the cutting blade 18 is sucked and held by the suction pad 36, the rubber sheet 12 at the time of cutting is The displacement can be restricted, and the shape of the rubber sample 21 is stabilized. When the rubber sample 21 is cut out from the rubber sheet 12 as described above, the rubber sample 21 is released from the regulation from the rubber sheet 12 and becomes free, so the suction pad 36 holds the rubber sample 21 in a suction state. It moves to the lower limit by the urging force of the spring 46 together with the hollow pipe 32 and protrudes from the cutting edge 18 of the cutter 16 to the tip side as shown in FIG. As a result, the rubber sample 21 can be easily and reliably detached from the cutter 16.

  Reference numeral 50 denotes a horizontal conveyor that is installed in front of the receiving body 24 in the moving direction of the cutter 16, and in this embodiment, in the lower direction. The conveying conveyor 50 extends in the front-rear direction, and its upstream end is directly below the receiving body 24. Is located. As described above, when the suction pad 36 and the rubber sample 21 sucked and held by the suction pad 36 pass through the through hole 25 by the operation of the cylinder 19 and further descend, the rubber sample 21 of the conveyor 50 Delivered to the upstream end. In this way, the through hole 25 penetrating the receiver 24 is formed, and the conveyor 16 that receives the rubber sample 21 in the moving direction of the cutter 16 from the receiver 24 is arranged. After the rubber sample 21 is cut out, the cutter 16 Also, the rubber sample 21 can be transported to the transport conveyor 50 by simply moving (lowering) the suction pad 36 holding the rubber sample 21 to the tip as it is, and the operation becomes quick and easy.

  When the rubber sample 21 held on the suction pad 36 is transferred to the transport conveyor 50, the suction pad 36 may be cut off from the vacuum source 42 and the rubber sample 21 may be released from the suction holding by the suction pad 36. However, in this embodiment, the switching valve 40 is switched to connect the compressed gas source 44 and the suction chamber 37 of the suction pad 36 to supply compressed gas, for example, high-pressure air, to the suction pad 36. The rubber sample 21 held by adsorption is forcibly separated from the adsorption pad 36 by the pressure of the compressed gas introduced into the adsorption chamber 37. Thus, the rubber sample 21 can be easily and reliably detached from the suction pad 36.

  53 is a winding roll made of a polyethylene film or the like, and a thin film having a constant width and is wound into a roll. The lower film 54 unwound from the winding roll 53 is supplied to the upstream end of the conveyor 50. And then placed on the conveyor 50. As a result, the rubber sample 21 delivered from the suction pad 36 is placed on the lower film 54 on the transport conveyor 50, and then travels along the lower film 54 toward the downstream side (rear) with the travel of the transport conveyor 50. Be transported.

  57 is a winding roll installed behind the winding roll 53, and the upper film 58 similar to the lower film 54 is wound up in a roll shape. The upper film 58 unwound from the winding roll 57 is a conveyor. 50 is supplied to the central portion in the longitudinal direction, and is superimposed on the lower film 54 in the middle of conveyance. As a result, the rubber sample 21 placed on the lower film 54 is interposed between the lower films 54 and 58 below. As a result, the transfer conveyor 50 can transfer the rubber sample 21 downstream in a sealed state to prevent contamination on the surface of the rubber sample 21, and also easily prevent the shape change of the rubber sample 21. be able to.

Next, the operation of the first embodiment will be described.
Now, it is assumed that the rubber sheet 12 is conveyed forward by the operation of the first and second conveyors 11 and 13, and a predetermined portion of the rubber sheet 12 has reached the receiving body 24, so that the conveyance is stopped. At this time, since the piston rod 20 of the cylinder 19 is retracted, the cutter 16 stands by above the rubber sheet 12, and since the suction pad 36 is in a free state, the lowering limit is set by the urging force of the spring 46. And the whole projects from the tip of the cutter 16 (the cutting edge 18) to the tip side.

  Next, when the cylinder 19 is actuated and the piston rod 20 protrudes, the cutter 16 and the suction pad 36 are moved toward the front end side (downward) toward the rubber sheet 12 by the cylinder 19, but during this movement (downward) When the suction pad 36 is pressed against the rubber sheet 12, the lowering of the suction pad 36 is restricted by the rubber sheet 12, so that the suction pad 36 is pushed by the rubber sheet 12 and is entirely pushed into the storage hole 17 and stored. At this time, the spring 46 is pushed and compressed by the proximal flange 31 and the spring receiver 33. At this time, the switching valve 40 is switched so that the vacuum source 42 and the suction chamber 37 are connected. As a result, the suction pad 36 pressed against the rubber sheet 12 by the suction chamber 37 becomes vacuum, and the rubber sheet 12 is Adsorb and hold from above.

  When the cutter 16 is further lowered by the cylinder 19 in this state, the suction pad 36 maintains the current position by the rubber sheet 12, while only the cutter 16 is lowered and the tip thereof enters the through hole 25, thereby The cutting blades 18 and 26 cooperate to cut the rubber sheet 12 around the portion held by the suction pad 36 to cut out the disk-shaped rubber sample 21. When the rubber sample 21 is cut out from the rubber sheet 12 in this way, the rubber sample 21 loses continuity with the rubber sheet 12, so the spring 46 is attached to the suction pad 36 holding the rubber sample 21 by suction. An elastic restoring force (biasing force) is applied, and the suction pad 36 is moved to the lowering limit together with the rubber sample 21, so that at least the tip portion, here, the suction pad 36 as a whole protrudes from the cutting edge 18 toward the tip side.

  In this way, the suction pad 36 capable of sucking and holding the rubber sample 21 can be retracted and stored in the storage hole 17 of the cutter 16, and the suction pad 36 can be urged toward the tip side to protrude from the cutting edge 18. Since the spring 46 is provided, the suction pad 36 can adsorb the rubber sheet 12 when the rubber sample 21 is cut out, and the displacement of the rubber sheet 12 can be regulated, thereby changing the shape of the cut rubber sample 21. It can be stabilized. When the rubber sample 21 is cut out, the suction pad 36 protrudes from the cutting edge 18 to the tip side by the spring 46 with the rubber sample 21 being sucked and held, so that the rubber sample 21 can be easily and reliably removed from the cutter 16 at this stage. You can leave.

  Even after the suction pad 36 and the rubber sample 21 have passed through the through hole 25, the rubber sample 21 in which the cutter 16 is sucked and held by the suction pad 36 by the cylinder 19 is further upstream of the transport conveyor 50 (lower film 54). It is brought into contact with the end portion or lowered to a position slightly away from it. After that, when the switching valve 40 is switched and the compressed gas source 44 and the adsorption chamber 37 are connected to supply the compressed gas to the adsorption chamber 37, the rubber sample 21 adsorbed and held by the adsorption pad 36 is introduced into the adsorption chamber 37. It is pushed by the compressed gas and forcibly released from the suction holding by the suction pad 36 and is supplied onto the conveyor 50 (lower film 54). It should be noted that the pressure of the compressed gas is set to a plurality of types, for example, two types of high pressure and low pressure, and the pressure is appropriately changed according to the strength (difficulty of coming off) of the rubber sample 21 to the suction pad 36. It may be.

  Next, the cylinder 19 is actuated to raise the cutter 16 to the initial position, while the first and second conveyors 11 and 13 are actuated to carry out the rubber sheet 12 from which the rubber sample 21 has been cut forward, Then, the rubber sheet 12 for collecting the rubber sample 21 is conveyed onto the receiving body 24. On the other hand, the rubber sample 21 supplied on the transport conveyor 50 (lower film 54) is transported rearward by the travel of the transport conveyor 50, but is unwound from the winding roll 57 during the transport. Since the film 58 is supplied and superimposed on the lower film 54, the collected rubber sample 21 is sandwiched from above and below by the upper and lower films 58 and 54 and sealed.

  The present invention can be applied to the industrial field of collecting a rubber sample from a rubber sheet.

16 ... Cutter 17 ... Storage hole
18 ... Cutting blade 19 ... Moving mechanism
21 ... Rubber sample 24 ... Receiver
25 ... Intrusion hole 36 ... Suction pad
46 ... Biasing member 50 ... Conveyor
54 ... Lower film 58 ... Upper film

Claims (6)

    A step of moving a cutter having a storage hole in which the suction pad is retractable at the tip and a cutting blade surrounding the storage hole by a moving mechanism toward the rubber sheet, and the suction pad is pushed by the rubber sheet by the movement A step of cutting a rubber sample from the rubber sheet by a cutting blade when the suction pad is pushed into the storage hole and holding the rubber sheet by suction, and a suction pad holding the cut rubber sample at the tip by suction A rubber sample collecting method, comprising: a step of applying a biasing force toward the tip side by the biasing member, and causing at least a tip portion of the suction pad to protrude from the cutting edge toward the tip side.     A cutter having a storage hole at the tip and a cutting blade surrounding the storage hole, a moving mechanism for cutting the rubber sample from the rubber sheet by the cutting blade of the cutter by moving the cutter toward the rubber sheet, and the storage hole A suction pad that can be retracted and can be sucked and held at the tip, and a biasing force toward the tip side is applied to the suction pad, so that at least the tip of the suction pad And an urging member that protrudes from the cutting edge toward the tip side, and when the rubber sample is cut out from the rubber sheet by the cutting edge, the suction pad is pushed into the storage hole by being pushed by the rubber sheet while adsorbing the rubber sheet. When the rubber sample is cut out from the rubber sheet, the suction pad is held by the biasing member while holding the rubber sample. Rubber sampler being characterized in that so as to protrude from the cutting edge on the distal end side.     A receiving body that cuts out a rubber sample from the rubber sheet in cooperation with the cutter is provided on the opposite side of the rubber sheet from the arrangement side of the cutter, and an intrusion hole into which the tip of the cutter enters when the rubber sample is cut out on the receiving body The rubber sample collecting device according to claim 2 formed.     The rubber sample collecting device according to claim 3, wherein the intrusion hole is a through hole penetrating the receiving body, and a conveyor for receiving the rubber sample is disposed in front of the receiving body in the moving direction of the cutter.     The lower film is placed on the conveyor, the rubber sample received from the cutter is placed on the lower film, and the upper film is overlaid on the lower film while being conveyed by the conveyor, and the rubber sample is placed under the lower film. The rubber sample collecting device according to claim 4, wherein the rubber sample collecting device is interposed between the upper films.     The rubber sample collecting device according to claim 4 or 5, wherein when the rubber sample is delivered from the suction pad to a conveyor, compressed gas is supplied to the suction pad to forcibly remove the rubber sample from the suction pad.

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