KR0182278B1 - Bead removing device for pallette made of synthetic resin and bead cutter mechanism using the same - Google Patents

Abstract

The present invention relates to an apparatus for removing beads generated in the welding step of a synthetic resin pallet. The device of the present invention is capable of automation, and furthermore, it is possible to completely remove the beads of the argon.

The bead removing device of the present invention comprises a pallet holding means and a bead cutter driving means. The pallet holding means consists of a pallet conveying means which can be retracted. It is configured to rotate the pallet at an angle between the support device by advancing the pallet rotating device. Meanwhile, the bead cutter driving means includes a cutter retractor having a bead cutter and a pallet conveying means. The cutter retractor was advanced in the direction of the pallet holding means so that the bead cutter at the end of the ar tip, which was allowed to move up and down, was brought into contact with the bead face, so that the bead was scraped off when the cutter retractor retreated.

Description

Bead removal device of plastic pallet and bead cutter mechanism used in this device

1 is an explanatory front view of the entire bead removal device, with a part omitted.

2 is an explanatory side view of the entire bead removal device as well.

3 is a front view for explaining the pallet holding means.

4 is also an enlarged perspective view of some of the pallet holding means.

5 is a cross-sectional plan view of the cutter driving means detachable and contactable with respect to the pallet holding means.

6 is also a cross-sectional front view of the cutter driving means.

7 is a cross-sectional plan view of the bead cutter mechanism.

Figure 8 is a perspective view of the bead cutter mechanism also omitted a part.

9 is a perspective view showing a method of dividing a four-way pallet.

10 is a plan view again showing a divided plane.

11 is a perspective view showing a method of dividing a two-way pallet.

12 is a plan view again showing a divided plane.

* Explanation of symbols for main parts of the drawings

10: pallet holding means 11: cutter driving means

15: pallet rotating device 17: support device

19,21: conveyor 20: cutter retraction device

37: rotating plate 90: arm

92 drive mechanism 111,115,119 sprocket

In a molding method in which a part made of a plurality of parts of a synthetic resin pellet is welded and finished, beads are formed in the welded part of the part. The present invention relates to an apparatus for removing beads generated in the welding step of a synthetic resin pallet. Particularly, the beads removal device of the synthetic resin pallet which removes the beads generated when the upper part and the lower part formed by splitting and molding the synthetic resin pallet vertically in the horizontal direction and completed, and the beads used in the device Relates to a cutter mechanism.

Conventionally, in the manufacturing method of the synthetic resin pallet, there exist an integral molding method by an injection molding machine, and the contact welding molding method which obtains an integral pallet by welding the divided surface of the part which was divided | divided molding previously. There are various methods of dividing the synthetic resin pellets produced by the contact welding molding method. As one of the dividing methods, there is a method of dividing the pallet in the horizontal direction, for example, as shown in FIGS. 9 to 12. In FIGS. 9 and 10, four-way type pallets are used. Indicates. The pallet 1 is divided and formed into the upper part 7 and the lower part 9 by the horizontal dividing line 5 in the substantially center part of the height direction of the strut 3. 11 and 12 show two-way pallets, and the upper part 8a and the lower part (in the horizontal dividing line 6 in the substantially center portion of the height direction of the strut 4 of the pallet 2). Division molding into 8b). Then, the divided upper part 7 and the lower part 9, and the upper part 8a and the lower part 8b are welded to each other with their divided surfaces to produce integral pallets.

In order to weld the divided surfaces of the two parts to each other, the pair of opposing press plates is fixed to each other by opposing the welding surface between the upper part 7 and the lower part 9 or the upper part 8a and the lower part 8b. . Subsequently, a heating plate configured to be retractable is inserted between the parts. The positive pressure plate is brought close to the state where the heating plate is inserted, and the welding surface of both parts is brought into contact with the heating plate to heat and melt. After heating and melting for a period of time, the pressure plate is opened to retract the heating plate. Again, the pressing plate is approached to press the upper part 7 and the lower part 9 or the upper part 8a and the lower part 8b, respectively, to manufacture integral pallets. At this time, the bead is generated in the weld weld. In other words, when welding and welding, the welded portion is pressed in a molten state to some extent, the molten resin rises to the side to generate beads.

The generation of such beads had the following problems. That is, the bead is not only desirable in appearance, but the bead is peeled off by the collision of the fork when the fork is inserted, and the bottom surface is dirty. In addition, there is a fear that the peeled off beads may be mixed as foreign matters in the bottom products stacked up. In addition, the beads on the pallet side may cause pallets to hang while stacking pallets, thereby inhibiting smooth work and damaging the pallets themselves. In addition, the bead on the side of the fork insertion port may catch the fork when the fork is inserted, thereby inhibiting the smooth insertion of the fork.

Since the generation | occurrence | production of a bead has the above-mentioned problem, the bead was remove | eliminated to some extent conventionally. The removal of the beads was cut out with a knife by hand. Since the removal of the conventional beads is a hand work, not only the work efficiency is bad but also the beads generated inside the product cannot be scraped off. Moreover, even when mechanically scraped off, although it is comparatively easy in a linear flat part, the bead on an ar surface could not be removed.

The present invention has been made in view of the present situation. It is an object of the present invention to provide an apparatus for removing beads of an automated plastic pallet. Moreover, an object of this invention is to provide the bead removal apparatus of the synthetic resin pallet which can remove the beads which generate | occur | produced in the ar surface completely.

Moreover, an object of this invention is to provide the bead cutter mechanism used for the said bead removal apparatus.

All the objects and advantages of the present invention described above will be fully understood by reference to the following description and drawings.

The present invention is configured as follows to achieve the above object.

That is, the bead removal apparatus of the synthetic resin pallet is comprised by the holding means which can hold | maintain and rotate a pallet, and can advance and retract, and the bead cutter drive means. The bead cutter driving means is constituted by paralleling a cutter retraction device having a bead cutter and a pallet conveying means.

In addition, when the respective configurations are described, the pallet holding means is arranged so that the pallet rotating device and the support device face each other at a predetermined distance from each other to allow the pallet to move back and forth between the pallet rotating device and the support device. It is achieved by installing pallet conveying means. And the said pallet rotating apparatus is provided with the slide stand which advances and retreats in the same direction as the advancing direction of the pedestal to the mount fixed to the said pedestal, and the said slide object is made by bearing the rotary shaft which fixed the rotating plate to the front-end | tip. Moreover, the said support apparatus is made by holding the rotating shaft which fixed the rotating plate to the front end on the upper surface of the mount fixed to the said base. In addition, the cutter retraction device of the bead cutter means is provided by moving to the pallet holding means to slidably install the movable frame, and the movable frame is provided with an arm having a cutter blade at the distal end thereof. .

The bead cutter mechanism used in the bead removing device has a holder that rotatably pivots the rear end of the lever to an arm that can move back and forth, and that detachably holds the cutter blade at the distal end of the lever. Moisten. The holder is provided with a guide roller, and a tension spring for always contacting the cutter blade with the bead is provided between the guide roller shaft and the lever.

In the bead removing apparatus, since the pedestal is retractable, the pallets brought in are in series with the bead cutter mechanism, and the pallet after the bead removal is moved in a position parallel to the pallet conveying means. The pallet rotating device and the supporting device narrowly fix the pallet carried in the pallet conveying means disposed between the two devices. The pinching of the pallet is performed by first pressing the pallet between the slide table of the pallet rotating device and the supporting device facing each other. Subsequently, in the case where the pallet loading means is constituted by a conveyor, an interval for arm insertion is provided between the pallet lower surface. Removal of the bead is performed by the cutter retractor of the bead cutter driving means moving forward to abut the cutter blade against the bead surface, and again cutting the bead by the cutter blade while retracting the cutter retractor. The pallet rotator is then operated to rotate the pallet at an angle.

Similarly, the cutter retractor is advanced to abut the cutter blade against the bead surface, and the cutter retractor is retracted as it is to remove the beads. When the bead is removed, the pallet is slid to a position orthogonal to the pallet conveying means of the bead cutter driving means, and the pallet conveying means is sent to the pallet conveying means on the side of the bead cutter driving means. The pallet is then carried out to the next step. Since the arm of the cutter retractor is provided to be liftable, it can be adjusted according to the type and size of the pallet.

Since the bead cutter mechanism holds a holder having a cutter blade at the tip end of the lever which is rotatably rotatable, the cutter blade can be inserted inward from the horizontal bead surface by the rotation of the lever. Therefore, the inside beads of the argon can be removed. In addition, the tension spring installed in the holder always comes into contact with the bead surface at a predetermined angle.

Next, the bead removal apparatus which concerns on this invention is demonstrated in detail based on an Example.

A feature of the present invention resides in removing and conveying the beads while the pallet is upright. In addition, a feature of the present invention is that the bead cutter is inserted at the fork insertion port of the pallet so that the inner bead is also removable. In addition, a feature of the present invention is that the cutter blade is rotated in an arc shape so as to abut at a constant angle even on the ar surface.

The bead removal device according to the present invention is a pallet holding means (10) for pressing and pinching the pallet brought in a standing state by the loading means and at the same time rotating the pallet by a predetermined angle, and held in the pallet holding means (10) It consists of the bead cutter drive means 11 provided with the bead cutter mechanism which contact | connects a pallet and is arrange | positioned so that it can raise and lower again. In FIG. 1, the pallet holding means 10 arrange | positioned between the pallet rotating apparatus 15, the support apparatus 17 which opposes this rotating apparatus, and the said rotating apparatus 15 and the support apparatus 17. In FIG. The conveyor 19 is provided. And the pallet holding means is comprised so that advancement and retraction are possible in the direction orthogonal to the conveyance direction of a pallet. On the other hand, the bead cutter driving means 11 is provided with a cutter retractor 20 and a conveyor 21.

In the above structure, when the pallet A is carried on the conveyor 19 of the pallet holding means 10 by the pallet conveying means 13, it is pinched by the rotating apparatus 15 and the support apparatus 17. As shown in FIG. The rotary device 15 and the support device 17 move the pallet A, which is advanced and pinched, in a straight line with the cutter retraction device 20 of the bead cutter driving means 11. Next, the beads are removed by the cutter retractor 20. The bead cutter mechanism protrudes a cutter in a holding frame, and inserts it inside rather than a horizontal bead surface. Since the cutter blade holder is rotatable, the cutter blade holder is brought into contact with the pallet at a predetermined angle. Therefore, not only the horizontal plane but also the beads in the ar plane are completely removed. When the bead removal is completed, the pallet A retreats to the original position again, and releases the sandwich between the rotary device 15 and the support device 17. After that, the pallet A is operated by the conveyor 19, and is conveyed to the next process from the conveyor 19 via the conveyor 21. FIG.

Next, the structure of the said means is demonstrated in detail.

First, the pallet holding means 10 is provided with the rotary device 15, the support device 17 and the conveyor 19 on the base 25 for sliding the base 23. That is, a pair of rails 27 are provided on the base 23, and a pair of guide members 29 provided on the lower surface of the pedestal 25 are slidably engaged with the rails 27. Moreover, the cylinder mechanism 30 is arrange | positioned at the base stand 23, and the rod 31 of this cylinder mechanism 30 is being fixed to the fixing plate 33 of the base 25. As shown in FIG. Therefore, the rod 31 moves forward and backward by the operation of the cylinder mechanism 30, and the pedestal 25 slides in the direction indicated by the arrow a in FIG. The rail 27 is provided in a direction orthogonal to the conveying direction of the pallet, and the pedestal 25 reciprocates the pallet A between the cutter retractor 20 and the conveyor 21.

The rotating device 15 is formed by removably disposing a slide table 39 bearing a rotating plate 37 for pinching and rotating the pallet A on the mount 35 fixed on the pedestal 25. . That is, the mount 35 is fixed to the pedestal 25, and a pair of rails 40 are attached to the upper surface of the mount 35 in parallel with the rail 27. The guide member 41 provided in the lower surface of the slide stand 39 is slidably engaged with this rail 40. The slide table 39 is advanced by the cylinder mechanism 43. The cylinder mechanism 43 is fixed to the mounting plate 45 mounted on the mount 35, while the rod 47 of the cylinder mechanism 43 is fixed to the slide table 39. In addition, on the slide table 39, a rotating shaft 49 having the tip fixed to the rotary plate 37 and the worm gear 53 fixed to the rear end is supported by the bearings 50 and 51.

A worm 55 is engaged with the worm gear 53, and a poly 59 is fixed to the shaft 57 of the worm 55. On the other hand, the drive motor 61 is attached to the bracket 60 attached to the slide stand 39, and the pulley 63 is fixed to the rotating shaft of this drive motor 61. As shown in FIG. The belt 65 is wound between the pulley 63 and the pulley 59. When the drive motor 61 is operated, the belt 65 is driven, and at the same time, the rotating shaft 49 rotates through the worm gear 53 and the worm 55, and the rotating plate 37 fixed to the tip of the rotating shaft 49. It rotates. In addition, four holes 67 are drilled in the rotating plate 37 at substantially equidistant distances from the rotating shaft 49. The fixing pin 69 on the slide table 39 is fitted into the hole 67 by retreating. The fixing pin 69 is slidably axially slidable to the bearings 70 and 71, and the rod of the cylinder mechanism 75 is fixed to the support plate 73 fixed to the center portion.

Therefore, when the cylinder mechanism 75 is operated, the fixing pin 69 is advanced through the support plate 73 to fit the tip portion into the hole 67. The fixing pin 69 is fitted into the hole 67 to prevent the rotation of the rotating plate 37 and keep the pallet A vertical. The fixing pin 69 moves forward when the bead is removed to fix the rotating plate 37, and retracts and falls from the rotating plate 37 when the rotating plate 37 is rotated to change the direction of the pallet A. FIG.

The rotation prevention of the rotating plate is not limited to the implementation, and may be omitted as appropriate or may be changed to other rotation preventing means. In the above configuration, the slide movement of the slide table 39 can be changed to other driving means without using the cylinder mechanism 43. The belt 65 wound around the pulley 63 of the drive motor 61 may be wound directly on the pulley fixed to the rotation shaft 49.

Next, the support device 17 facing the rotating device 15 of the above configuration secures the mount 79 on the pedestal 25, and the rotating plate on the rotating shaft 80 axially supported on the mount 79. It is comprised by fixing (81). The mount 79 is fixed to the mount 35 at a predetermined interval, and the rotating shaft 80 and the rotating shaft 49 face each other on substantially the same axis. The rotary plate 81 clamps the pallet A between the rotary plate 37 and rotates integrally when the rotary plate 37 rotates.

Next, the structure of the conveyor 19 is demonstrated based on FIG. 2 and FIG.

The conveyor 19 is drooped between the rotating apparatus 15 and the support apparatus 17. That is, the rod 85 of the cylinder mechanism 83 received from the mount 35 and the mount 79 is being fixed to the roller mounting frame 89 provided with the some roller 87. As shown in FIG. Therefore, the roller 87 moves up and down by the operation of the cylinder mechanism 83 and the height position of the roller 87 can be adjusted by adjusting the stroke of the rod 85. The roller 87 may be provided with a drive motor on its own, but may be configured to be provided with a sprocket on the roller shaft and rotated by a chain wound around a sprocket (not shown) of the drive motor. The conveyor 19 may be another conveying means, and the pallet before the bead removal is carried in between the rotating device 15 and the supporting device 17, and the pallet after the bead removal is conveyed to the conveyor 21 of the cutter driving means 11. What is necessary is just to be able to convey to.

Next, the bead cutter drive means 11 is demonstrated based on FIG. 1, FIG. 2, and FIG. 5 thru | or FIG. The bead cutter driving means 11 is composed of a cutter retractor 20 and a conveyor disposed on the base table 23. The cutter retractor 20 is provided with a movable frame 91 in which four arms 90 having cutter blades are installed at the distal end so as to be movable up and down, and the movable frame 91 is connected to the pallet holding means 10. It consists of the drive mechanism 92 which moves. That is, an approximately L-shaped traveling plate 100 is installed on the upper part of the movable frame 91 and is fixed to the guide member 103 slidably engaged with the two guide rails 101 and 101. . Therefore, the movable plate 91 is carried by the guide member 103 to the guide rails 101 and 101. On the other hand, the lower end of the movable frame 91 is fixed to the door roller (door roller) through the angle 93 and the door roller 95 is a rail (parallel) parallel to the guide rails 101, 101 ( 97) are opposed to each other at regular intervals. When the door roller 95 clamps the rail 97, the horizontal vibration is prevented.

Further, the drive mechanism 92 for sliding the movable plate 91 includes a chain 105 fixed to an outer surface of the movable plate 91 and a drive motor 107 for driving the chain 105. That is, the chain 105 is wound around the sprocket 11 fixed to the rotating shaft 110 and the sprocket 115 provided in the support | pillar 113 installed on the base stand 23. As shown in FIG. In addition, the drive motor 107 is provided on the mount 109, and the chain is connected to the sprocket 119 fixed to the rotating shaft of the drive motor 107 and the sprocket 120 fixed to the other end of the rotating shaft 110. (121) is wound. The chain 121 is fixed by fastening the pressing plate 118 with a bolt on the mounting plate 116 protruding from the movable frame 91. Accordingly, when the driving motor 107 is operated, the rotating shaft 110 is rotated by the chain 121, so that the chain 105 is driven by the sprocket 111 installed on the rotating shaft 110, and the movable frame 91 is provided. The slide 93 runs on this rail 93. By moving the drive motor 107 forward and reverse, the movable plate 91 can be moved to be in contact with the pallet holding means 10.

Next, the arm 90 disposed on the movable plate 91 so as to be movable up and down will be described. The arm 90 is composed of four arms 123 to 126, and the bead cutter mechanisms 123a, 124a, 125a and 126a are provided at the front end, respectively, and the arm substrate ( 123b), 124b, 125b, and 126b are provided. The arm substrates 123b to 126b are fixed to a ball nut screwed to a ball screw provided in the vertical direction. That is, the driving motors 127 and 129 are provided on the traveling plate 100 provided on the movable plate 91. Ball screws 130 and 131 are connected to the rotating shaft of the drive motor, and the lower end is fixed by the bearing 133. The ball screw 130 has a ball screw 141 that rotates at the same time through a pair of gears 139, and the ball screw 131 has a ball screw 143 that rotates at the same time through a pair of gears 140 Each is installed. The ball screws 141 and 143 are respectively supported by an upper bearing 145 and a lower part 147. A ball nut 149 is fixed to the ball screw 141 by fixing the arm substrate 126b, and a ball nut 150 is secured to the ball screw 143 by the arm substrate 125b. It is screwed together. The arm substrates 123b, 124b, 125b and 126b are provided with guide members 151 at both ends. The guide member 151 is slidably engaged with the rail 155 fixed to the vertical frame 153 of the movable frame 91.

Therefore, when the driving motor 127 is operated, the ball screw 130 and 141 rotate, and the arm substrate 123b and the arm substrate 126 are moved up and down by the ball nuts 135 and 149 which are screwed together. Exercise. When the drive motor 129 is operated, the ball screws 131 and 143 rotate, and the arm substrates 124b and 125b move up and down by the ball nuts 137 and 150 which are screwed together. do.

At this time, each substrate is engaged with the rail 155 by the guide member 151, thereby enabling smooth vertical movement while maintaining a horizontal state.

Next, the structure of the bead cutter mechanism 123a, 124a, 125a, and 126a of an arm tip part is demonstrated. In the bead cutter mechanism 123a and 126a, one cutter body 159 is provided inward, and the bead cutter mechanisms 124a and 125a have two cutter bodies 159 up and down in opposite directions. It is installed. Therefore, the bead cutter mechanism 124a is demonstrated and the description is abbreviate | omitted about another bead cutter mechanism. In the bead cutter mechanism 124a, the cutter body 159 is housed in two retaining frames 157 provided in parallel as shown in FIGS.

The cutter body 159 includes a holder 161 for fixing the cutter blade 160, a lever 163 for axially rotatable the holder 161, and a cylinder mechanism 165 for driving the lever 163. Is made of. The rear end of the cylinder mechanism 165 is supported by the holding frame 157 so as to be rotatable by the pin 167. The rod 169 of the cylinder mechanism 165 is supported by the attachment plate 170 protruding from the lever 163. The central portion of the holder 161 is held by the pin 171 at the tip end of the lever 163. The rear end of the lever 163 is supported by the pin 173 so as to be rotatable in the holding frame 157. In addition, the holder 161 is detachably fixed to the cutter blade 160 is formed so as to contact the cutter blade 160 at a predetermined angle with respect to the bead surface. The rear end of the holder 161 is provided with a guide roller 175, and has a tension spring 177 provided long between the lever 163. The tension spring 177 rotates the holder 161 around the pin 171 to apply a force in the direction in which the cutter blade 160 always protrudes from the retaining frame 157. Moreover, the sensor 176 which confirms that the lever 163 is accommodated in the holding | maintenance frame 157 is provided in the rear end side of the lever 163. As shown in FIG.

The cutter body 159 configured as described above is usually housed in the holding frame 157. When the cylinder mechanism 165 is operated to pull back the rod 169, the lever 163 rotates about the pin 173 and protrudes the holder 161 from the holding frame 157. At this time, since the cutter blade 160 is located outside the guide roller 175, the cutter blade 160 can be inserted into the inner side of the pallet that the guide roller 175 abuts and abuts. Therefore, when the arm 90 is pulled back in this state, the cutter blade 160 can be removed by scraping off a bead. When the cutter blade 160 moves from the ar surface to the horizontal plane, the holder 161 rotates about the pin 171 while pressing the guide roller 175 against the bead surface. Therefore, the cutter blade 160 can be brought into contact with the bead surface at a constant angle at all times.

Next, a method of using the bead removal device according to the above configuration will be described in the case of a four-way pallet.

First, the position at the time of advancing and retracting the pallet holding means 10, the height position of the conveyor 19, etc. are adjusted. That is, when the pallet holding means 10 is retracted, the conveyor 19 is matched with the pallet loading means 13, and when the pallet is moved forward, the conveyor 19 is aligned with the arm 90 of the cutter driving means 11. . In addition, the conveyor 19 is adjusted to the size of the pallet and the height position and the size of the lifting stroke. On the other hand, in the bead cutter driving means 11, the height position at the time of projecting the arm 90, that is, the cutter blade 160, is adjusted in accordance with the type and size of the pallet. When the preparation is completed, the pallet A is brought in by serially conveying the conveyor 19 of the pallet holding means 10 with the pallet conveying means 13 and the conveyor 21.

When the pallet A is carried in, the cylinder mechanism 43 is operated to advance the slide table 39, and the pallet A is clamped and fixed by the rotating plate 37 and the rotating plate 81 on the mount 79 side. . At the same time, the cylinder mechanism 75 is operated to advance the fixing pin 69, and the tip of the fixing pin 69 is fitted into the hole 67 provided on the rear surface of the rotating plate 37. The pallet A is stably held and fixed by the fixing pin 69. Subsequently, the cylinder mechanism 30 is operated to advance the pedestal 25 so that the pallet A is in series with the arm 90, and the cylinder mechanism 83 is operated to fix the roller 87 to the mounting frame 89. Down). By pulling down the attachment frame 89, the pallet A is rotatable and the bead cutter mechanism 126a becomes insertable.

Next, the drive motor 107 of the bead cutter driving means 11 is operated to rotate the chain 105. When the chain 105 rotates, the movable frame 91 moves forward smoothly while being received by the guide rails 101. When the cutter blade 160 is advanced to the position up to abutting the bead surface, the advancement of the movable frame 91 is stopped by a sensor (not shown). Subsequently, the cylinder mechanism 165 of the bead cutter mechanism is operated to protrude the cutter blade 160 from the retaining frame 157. The protruding cutter blade 160 abuts on the inner side of the ar surface because it can enter inwardly from the horizontal cut surface. When the drive motor 107 is driven again to retract the movable mold 91, the bead is scraped off by the cutter blade 160. At this time, the guide roller 175 abuts against the cut surface to guide the cutter blade 160 while maintaining a constant angle, and enables smooth removal even on the ar surface (see FIG. 7).

When the movable frame 91 retreats and removal of the X-direction bead shown in FIG. 10 is completed, the rod 169 is advanced by the operation of the cylinder mechanism 165, and the lever 163 is rotated to rotate the cutter. The blade 160 is once accommodated in the holding frame 157. At this time, it is confirmed that the cutter blade 160 is accommodated in the holding frame 157 by the sensor 176. On the other hand, after the pallet holding means 10 to rotate the pallet A at a predetermined angle to remove the beads in the Y direction. In order to rotate the pallet A, the cylinder mechanism 75 is operated to disengage the tip of the fixing pin 69 from the hole 67, and then the drive motor 61 is operated to rotate the rotating shaft 49 by 90 °. do. Subsequently, the cylinder mechanism 75 is operated again to advance the fixing pin 69 to fit the tip portion into the hole 67. In the cutter retractor 20, if necessary, the height positions of the arms 90 are adjusted again by operating the motors 127 and 129, respectively.

When the readjustment is completed, the drive motor 107 is operated to remove the bead in the Y direction according to the above-described method. When the removal of the beads in the X and Y directions is completed, the cylinder mechanism 30 is operated to retract the pedestal 25 so that the conveyor 19 is in series with the pallet loading means 13 and the conveyor 21. Let's do it. Subsequently, the cylinder mechanism 83 is operated to pull up the conveyor 19 to contact the pallet A. As shown in FIG. At the same time, the cylinder mechanism 43 is operated to retract the slide table 39 to release the pinch of the pallet by the rotating plate 37, and the cylinder mechanism 75 is operated to open the tip portion of the fixing pin 69 in the hole 67. Pulled out of Thereafter, the pallet A may be taken out by the conveyor 19 and the conveyor 21.

In the above use example, the case of removing the bead on each side only once has been described. However, when the arbor of the post is small or when the bead protrudes a lot, it may be removed twice. That is, when the pallet A is rotated 180 degrees after the first removal operation in the X direction is finished, the beads in the X direction are removed again from the opposite side, and the beads of the ar and the remaining portions are completely removed. can do. Similarly, also in the Y direction, when the pallet A is rotated 180 degrees after the first bead removal operation, the beads can be removed from the opposite side. Next, the bead removal method of a two-way pallet is demonstrated. Also in the two-way pallet, it is the same as the case of the four-way pallet in the L direction shown in FIG. 12, that is, the direction in which the fork is inserted. Therefore, the description is omitted. When the bead in the W direction shown in FIG. 12 is removed, there is no fork insertion hole. Therefore, when the fork insertion hole is held vertically in the pallet holding means 10, the pallet is held by the bead cutter mechanisms 124a and 125a. Cannot be inserted. Thus, the drive motors 127 and 129 are operated to move the bead cutter mechanisms 123a and 126a in the vertical direction, respectively. At the same time, the bead cutter mechanism 124a is raised and lowered to the upper side position of the pallet, respectively. Therefore, the bead cutter mechanism 123a and 126a become free, and the bead cutter mechanism 124a and 125a are used. Subsequently, the drive frame 107 may be operated to advance the movable mold 91, and the beads in the W direction may be removed by the above-described method. At this time, in the bead cutter mechanism 124a and 125a, only the inner cylinder mechanism 165 which abuts on the bead surface may be operated, and the cutter blade 160 may protrude from the holding frame 157, respectively.

As such, the bead cutter mechanisms 123a, 124a, 125a, and 126a can each be distributed from the center height position to an arbitrary height position, so that they can correspond to the type and size of the pallet.

In the above embodiment, the conveyor 19 is placed in series with the pallet loading means 13 and the conveyor 21 at the time of pallet loading, but may be disposed in series with the arm 90 of the cutter retraction device 20. In this case, the pallet loading means 13 may be arranged in series with the arm 90, and the conveyor 19 may be in series with the conveyor 21 when carrying out the pallet after removing the beads. In addition, the structure of the conveyor 19 and the conveyor 21 should just be able to convey a pallet, and is not specifically limited, It can also change into another carrying out means.

Although apparent from the above description, the present invention has the following effects. Since the pallet holding means moves the pallet forward and backward and makes the pallet rotatable, the pallet holding means can be provided with a cutter retraction device and a pallet conveying means in series with the pallet. In addition, since the pallet holding means opposes the pallet rotating device and the supporting device, the pallet can be held and fixed by the pallet rotating device, and the pallet to be fixed can be rotated at the same time. In addition, since the cutter retractor is brought into contact with the pallet holding means and is provided with a plurality of arms having a cutter blade for lifting, the cutter retracting device can be inserted from the fork insertion hole of the pallet to remove the beads and correspond to the size of the pallet. have. The bead cutter mechanism holds a holder with a cutter blade on a lever capable of rotating movement, and the holder is provided with a tension spring on the opposite side to the cutter blade, so that the cutter blade can be inserted inward from the horizontal surface, Beads can be removed. In addition, the cutter blade rotates against the spring so that the cutter blade can always abut at a constant angle.

Claims (11)

It consists of a pallet holding means and a bead cutter driving means for holding and rotating the pallet, and the pallet holding means is to rotate the pallet while opposing the pallet rotating device and the supporting device at regular intervals to the retractable base. Pallet conveying means is provided between the device and the support device, and the pallet rotating device is provided with a slide table which retreats in the same direction as the advancing direction of the pedestal on the mount fixed to the pedestal, The support device is made by bearing a rotary shaft fixed to the tip on the tip, and the support device is made by holding a rotary shaft fixed on the tip on the top of the mount fixed to the pedestal, while the bead cutter driving means is a bead cutter. The cutter retractor having a pallet conveying means and the cutter retractor comprises the pallet oil The movable frame is slidably arranged to be in contact with the supporting means, and the movable frame is provided by lifting and lowering an arm having a cutter blade at the distal end, and the pallet conveying means is formed in parallel with the cutter retraction device. Bead removal device of synthetic resin pallet. The bead removing apparatus of a synthetic resin pallet according to claim 1, wherein the pallet conveying means in the pallet holding means and the pallet conveying means in the bead cutter driving means are constituted by a conveyor. The bead removal apparatus of the synthetic resin pallet according to claim 1, wherein the pallet mechanism is used for advancing the pedestal and the slide table in the pallet holding means. The bead removing apparatus of the synthetic resin pallet according to claim 1, wherein a rotating shaft which is supported by the slide object and has a rotating plate fixed to the tip is driven by a motor. According to claim 1, wherein the rotary plate fixed to the front end of the rotary shaft which is supported on the slide stage is provided with four holes approximately equidistant from the rotary shaft, the retractable fixing pin is disposed on the slide stage, when the fixing pin is advanced A bead removing device for a synthetic resin pallet, the tip of which is fitted into a hole of a rotating plate. The pallet conveying means of the said pallet holding means consists of fixing the rod of the cylinder mechanism received by the mount of the said pallet rotating apparatus and the mount of the support apparatus to the roller mounting frame provided with the some roller. A bead removal device for a synthetic resin pallet. The cutter retractor of the bead cutter driving means receives a movable frame on a traveling plate fixed to a guide member slidably engaged with a guide rail, and guides through an angle to a lower end of the movable frame. And a door roller for holding a rail placed in parallel with the rail, and wherein the movable frame drives the chain fixed to the outside by a motor. 8. The arm of claim 7, wherein four arms are arranged on the movable frame so as to be movable, and the arm is provided with a bead cutter mechanism at the front end and an arm substrate at the rear end, wherein the arm substrate is movable frame. A bead removal device for a synthetic resin pallet, which is installed in a vertical direction and fixed to a ball nut screwed to two ball screws driven independently. 8. The synthetic resin pallet according to claim 7, wherein the chain fixed to the outside of the movable frame is wound between a sprocket installed on a support post mounted on a base table and a sprocket fixed to a rotating shaft driven by a motor. Droid removal device. While holding the rear end portion of the lever rotatably on the arm that can move back and forth, the holder holding the cutter blade detachably at the distal end of the lever is mounted, and the holder is provided with a guide roller. A bead cutter mechanism for a bead removal device for a synthetic resin pallet, wherein a tension spring is provided between the roller side and the lever. The bead cutter mechanism for bead removal apparatus of the synthetic resin pallet of Claim 10 provided with the sensor which confirms that the lever is accommodated in the holding frame near the rear end of the lever.