JP3363178B2 - Toilet paper roll shaping device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaping device for continuously shaping a hollow portion at the center of a toilet paper roll. 2. Description of the Related Art Toilet paper rolls have a hollow portion formed of a paper tube on the inner periphery and a hollow portion formed on the inner periphery of a wound layer of paper regardless of the paper tube. There are things. Regardless of the type of toilet paper roll, a wide width toilet paper atom is wound up into a predetermined length such as 65 m to form a log roll, and then the log roll is formed by a log cutting machine into a large number of toilet paper rolls having a predetermined axial length. When the rolls are manufactured at the same time, the circular shape of the hollow portion is unsightly crushed and deformed by the pressing force of the blade for cutting the log roll (see FIG. 4). [0003] When the hollow portion of the toilet paper roll is crushed into an irregular shape in this way, not only does the appearance of the toilet paper roll deteriorate, the commercial value is reduced, but also the shaft of the holder is inserted through the hollow portion. When mounting on a holder, it may be difficult to insert the shaft. For this reason, in the past, for those with a high degree of crushing, a thin rod was inserted into the hollow part and shaped by hand by hand so that the shape was close to a circle, but it took a lot of trouble and was not efficient . SUMMARY OF THE INVENTION Accordingly, the present invention provides a toilet paper roll which is pushed forward along a shaping core by a belt conveyor while a hollow portion of the toilet paper roll is fitted into the shaping core from one end, and the toilet paper roll is pushed from the other end of the shaping core. The hollow portion of the toilet paper roll was mechanically and continuously shaped by pushing it out.A toilet paper roll having a hollow portion at the center was placed sideways, and the toilet paper roll was placed in the axial direction of the hollow portion. A belt conveyor for advancing the roll, and a shaping core, which is arranged directly above the belt conveyor in the same direction as the toilet paper roll and is fitted with a hollow portion of the toilet paper roll advancing on the belt conveyor. The belt conveyor has a toy with a predetermined interval of at least twice the axial length of the toilet paper roll in the front-rear direction. A post-pressing member for post-pressing the lower peripheral end face of the let paper roll is provided, and the shaping core is provided with a first constricted portion and a second constricted portion having a small cross-sectional area at the same interval as the predetermined interval of the post-pressing member, in the longitudinal direction. The position is set differently,
A first holding member which advances and retreats to a frame supporting the belt conveyor and engages with and disengages from the first constriction;
A second holding member which is engaged with and disengaged from the constricted portion; when the first holding member engages with the first constricted portion to hold the shaping lead, the second holding member is separated from the second constricted portion; When the holding member is engaged with the second constriction to hold the shaping core, the first holding member is detached from the first constriction. In the illustrated embodiment, reference numeral 10 denotes a belt conveyor on which a toilet paper roll 1 having a hollow portion 2 at the center is placed horizontally, and the roll 1 is moved in the axial direction of the hollow portion 2 in FIG. Proceed from left to right. Reference numeral 20 denotes a shaping core arranged just above the center of the upper surface of the belt conveyor in the same direction as the traveling direction of the toilet paper roll 1 and fitted with the hollow portion 2 of the toilet paper roll advanced by the belt conveyor. It is molded from a suitable material such as wood, synthetic resin, or the like, and has a thickness slightly smaller than the inner diameter of the hollow portion 2 of the toilet paper roll. Therefore, even if the hollow portion 2 is crushed in an irregular shape, it can be easily fitted. In addition, the belt conveyor 10
And the length of the shaping core 20 are almost equal. [0006] The belt conveyor 10 is provided with a pusher member 11 which pushes the lower peripheral portion of the toilet paper roll 1 forward to advance forward while maintaining a predetermined interval S longer than twice the axial length L of the toilet paper roll 1. The toilet paper roll lying on the belt conveyor 10 is
Forced to advance with 1. [0007] The shaping core 20 has three first constricted portions 21 having a small cross-sectional area at the same interval as the interval S in the front-rear direction of the pushing member 11, and the middle of the interval between the first constricted portions 21 in the front-rear direction. 3 with the same spacing S and small cross-sectional area
It has two second constrictions 22. The first and second constrictions 21 and 22 are formed by annular grooves 20 ′ provided on the shaping core 20. The frame 12 of the belt conveyor has a first holding member 13 that can be engaged with each of the first constrictions 21 of the shaping core and a second holding member 14 that can be engaged with each of the second constrictions 22. , Is provided so as to be movable in a direction perpendicular to the traveling direction of the toilet paper roll. A first holding member 13,
The second holding member 14 has an engaging portion 25 such as a semicircle at the tip end facing the shaping core 20 to engage with the annular groove 20 ′ of each of the constrictions 21 and 22. Is moved toward the shaping core 20, the engaging portions 25 are engaged with the annular grooves 20 'of the constrictions 21, 22 and hold the shaping core 20 immovable in the axial direction. When the holding members 13 and 14 move in the direction away from the shaping core 20, the engaging portion 25 is separated from the annular groove and retracts to a position where the advance of the toilet paper roll is not hindered. In this embodiment, the belt conveyor frame 12 has guardrail-shaped side frames 12L and 12R that stand along the upper surface side edge of the belt conveyor 20, and holds the first and second three frames. The members 13 and 14 are attached to the side frames by piston cylinders, electromagnetic solenoids or other suitable reciprocating actuators. The engaging portions 15 of the holding members 13 and 14 are connected to the constrictions 21 and 22 of the shaping core 20. Facing horizontally. Of the three first holding members 13, two front and rear first holding members are attached to the left (or right) side frame 12L, and an intermediate first holding member is attached to the right (or left) side frame 12R. Of the three second holding members 14, two front and rear second holding members are attached to the right (or left) side frame 12R, and an intermediate second holding member is attached to the left (or right) side frame 12L. is there. Therefore, when three of the first holding members or three of the second holding members move toward the shaping core, the front and rear two engage the constriction from the left (or right), and the middle one is the right. (Or left) Even if there is no toilet paper roll with a hollow part fitted on the shaping core on the belt conveyor to engage with the constricted part from the left, the hollow part of the toilet paper roll just above the top surface of the belt conveyor even if the shaping core is on the belt conveyor Can be held at a fitting level, and the shaping core can be centered straight on the belt conveyor. The three reciprocating drive actuators 15 of the first holding member 13 operate synchronously, and the three
The two reciprocating drive actuators 16 also operate synchronously.
When one of the two reciprocating drive actuators 15 and 16 moves the holding member toward the shaping core and engages with the constricted portion, the other moves the holding member to the retracted position. Its operation is controlled by a photoelectric sensor and a timer. The speed at which the belt conveyor 10 advances the toilet paper roll with the pushing member 11 is constant, and the spacing between the pushing member 11, the first constricted portion 21 and the second constricted portion 22 in the front-rear direction is constant and the same. Therefore, the time required for the toilet paper roll to pass through the first constriction or the second constriction, and the time required for the toilet paper roll to reach the second (or first) constriction from the first (or second) constriction is Is known. Therefore, until the leading toilet paper roll is pushed forward by the pushing member, the toilet paper roll fits the hollow portion into the shaping core from the rear end and comes to the rear end, for example, near the first constricted portion 11. First
Each of the second holding members is engaged with each of the first and second constrictions of the shaping core, and holds the shaping core. When approaching the rearmost first constricted portion, all the first holding members 13 engaged with the first constricted portion 21 are retracted to the retracted position by the reciprocating actuator 15, and the toilet paper roll is moved to the first constricted portion. Until it passes through the portion, the shaping core is held by the engagement of the second holding member 14 with the second constriction portion 22, and the toilet paper roll resists the thrust applied to the shaping core. Thus, when the toilet paper roll passes through the first constriction,
A timer controls the reciprocating actuator of the second holding member by a timer to reach all the second holding members 14 to the retracted position before reaching the next second constricted portion, and at the same time, the reciprocating actuator of the first holding member is moved to the retracted position. By controlling all the first holding members 13 to engage with the first constriction 21, the thrust applied by the toilet paper roll to the shaping wick while the second constriction is moving is endured by the first holding member. As described above, during operation of the belt conveyor, one of the first holding member and the second holding member is engaged with the constricted portion of the shaping core, and the other is retracted to the retracted position by alternately controlling with a timer. By doing
The hollow part of the toilet paper roll is shaped while moving while being fitted to the shaping core, and the shaped toilet paper roll is pushed out from the front end of the shaping core. In the illustrated embodiment, the first constricted portion and the first holding member are provided for three, and the second constricted portion and the first holding member are provided for three, but the number is arbitrary. In addition, the first constriction and the first holding member, and the second constriction portion and the second holding member are alternately arranged in the front-rear direction, but they are not necessarily alternated. Furthermore, since the hollow portion of the toilet paper roll lying on the belt conveyor is fitted to the shaping core and supports the shaping core on the belt conveyor, the first and second holding members are Instead of facing the shaping core horizontally, the shaping core may be faced from above, diagonally above or below. In addition, belt conveyor 1
It is preferable that the upper surface of the 0 is deformed into a gutter-shaped cross section so that the hollow portion of the toilet paper roll fed sideways thereon can be smoothly fitted to the rear end of the shaping core.
Further, the constricted portions 21 and 22 may be formed by notches such as a half-moon shape and a crescent shape in addition to the annular grooves. According to the present invention, it is possible to automatically and continuously form a hollow portion deformed into an irregular shape on the inner periphery of a toilet paper roll into a circular shape, and to perform an operation conventionally performed manually. Labor can be saved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of an embodiment of a shaping apparatus according to the present invention. FIG. 2 is a plan view of FIG. FIG. 3 is a cross-sectional view showing an engaged state of a constricted portion and a holding member, and a retracted state. FIG. 4 is a perspective view of a toilet paper roll in which a hollow portion is distorted. DESCRIPTION OF SYMBOLS 1 toilet paper roll 2 hollow part 10 belt conveyor 11 booster member 12 frame 13 first holding member 14 second holding member 15 reciprocating drive actuator 16 reciprocating drive actuator 20 shaping core 21 first constricted part 22 second constricted Department

Claims (1)

(57) [Claims 1] A toilet paper roll having a hollow portion at the center is placed side by side, and the roll is advanced in the axial direction of the hollow portion. The toilet paper roll is arranged in the same direction as the advancing direction, and has a shaping core into which the hollow portion of the toilet paper roll advanced by the belt conveyor is fitted, and the belt conveyor has an axial length of the toilet paper roll. A pushing member is provided which pushes the lower peripheral end face of the toilet paper roll while maintaining a predetermined interval of at least twice in the front-rear direction, and the shaping core has a small cross-sectional area at the same interval as the predetermined interval of the pushing member. The constricted part and the second constricted part,
A first holding member which is provided at a position shifted in the front-rear direction and which advances and retreats to and engages with the first constricted portion on a frame supporting the belt conveyor, and a second retaining member which also advances and retreats and disengages with the second constricted portion When the first holding member engages with the first constriction to hold the shaping core, the second holding member is separated from the second constriction, and the second holding member engages with the second constriction. A shaping device for a toilet paper roll, wherein the first holding member is detached from the first constricted portion when holding the shaping core together.