JPS629059Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is made of plastic and is made by cutting a straight pipe into a fixed size and feeding the parison into a parison feeding device vertically to a parison transfer conveyor that circulates and transfers the parison in a heating furnace. The present invention relates to a parison reversal supply device for the purpose of reversing parisons.

As is well known, when forming containers etc. by the parison biaxial stretch blow molding method, the parisons are sequentially vertically fed to a parison transfer conveyor by a parison feeding device, and the supplied parisons are fed to the parison transfer conveyor. The material is circulated and transferred in a heating furnace to be heated to a predetermined stretching temperature, and after this heating, a predetermined blow molding is performed.

The present invention relates to a parison feeding device to the above-mentioned parison feeding device;
No. 33912), the parison is fed in advance into a supply hopper in a diagonally upwardly inclined state, and then the parison is fed into the supply hopper in the above-mentioned inclined state by an endless chain having claws for extruding the parison. The parisons were sequentially conveyed upward in the sloping direction, and the parisons were continuously and vertically fed from the sloping upper end of the endless chain to the parison feeding device.

However, in this prior invention, the parison is fed to the parison feeding device by utilizing the movement in which the parison is conveyed to the upper end of the slope of the endless chain, loses its balance, and naturally rotates downward and falls. Since the posture of the parison is not forcibly changed and fed, the parison feeding operation is uncertain and often leads to feeding errors. In addition, the rotation time of the endless chain is the time for supplying the parison to the parison device, and since the endless chain cannot be rotated at high speed, the rotation time for supplying the parison is long, making it difficult to quickly supply the parison. There was a defect.

The present invention was devised to correct the above-mentioned defects, and it does not cause errors in the supply of parisons, ensures the supply of parisons at all times, and has high durability and reliability. Moreover, it is an object of the present invention to provide a parison reversing supply device that can always quickly supply parisons.

An embodiment of the present invention will be described below with reference to the drawings.

First, FIGS. 1 and 2 show a heating furnace 2 of a parison 1 made of plastic and having a double-cut shape made by cutting a straight pipe to a fixed size, and a parison transfer conveyor 3 that is circulated and transferred within the heating furnace 2. Parison feeding device 4 to the parison transfer conveyor 3
1, the arrangement of a parison supply device 5 to the parison input device 4, and a parison take-out device 6 from the parison transfer conveyor 3 is shown.

The heating furnace 2 is configured as a hot air heating type furnace as shown in FIG. Heated to high temperatures.
In order to prevent hot air from escaping to the outside of the heating furnace 2 as much as possible and to keep the temperature throughout the heating furnace 2 uniform within a predetermined narrow temperature range, the work chamber 10 for loading and unloading the parison is located on the side wall of the heating furnace 2. It is configured as a sealed chamber covered with a sealed wall 12 connected to a wall 11.
A pair of opening/closing doors 13 and 14 are attached to the sealing wall 12 in correspondence with a parison loading device and a parison take-out position, which will be described later.

As shown in FIGS. 12 and 13, the parison transfer conveyor 3 includes a pair of endless chains 16 vertically spaced apart from each other and connected in parallel, and a vertical chain connected at a predetermined pitch above the pair of endless chains 16. It has a large number of parison insertion pins 17 attached to it. Note that the parison insertion pin 17 is attached to the support tube 1.
8, and the support cylinder 18 has a support pin 1 installed vertically between the pair of endless chains 16.
It is fitted onto the outer periphery of the upper end of 9 and is rotatably attached around its vertical axis. At the upper and lower ends of the parison insertion pin 17, a parison steadying collar 20 and a parison holder 21, each having a substantially conical shape, are provided. Note that a pinion 22 is provided on the outer periphery of the lower end of the support tube 18. As shown in FIG.
A plurality of guide sprockets 23 and guide rails (not shown) guide the second
It is configured to be horizontally moved in a zigzag pattern in the direction of arrow a in the figure. Further, the parison transfer conveyor 3 is partially inserted through passages 24 and 25 provided in the side wall 11 of the heating furnace 2 to reach the working chamber 10.
A guide sprocket 26 is led out into the working chamber 10 and guides the pair of endless chains 16.
27 and a guide rail (not shown) to horizontally move in the direction of arrow a. Note that a large number of racks 28 are arranged along the parallel transfer path of the parison transfer conveyor 3 in the heating furnace 2.
are arranged horizontally, and when the parison transfer conveyor 3 is circulated and transferred in the direction of the arrow a in the heating furnace 2, the pinions 22 of each parison insertion pin 17 are sequentially engaged with the racks 28 and rotated. The parison insertion pin 17 is configured to be rotated while being horizontally transferred.

By the way, as shown in FIG. 1, a motor device 31 having a speed reducer is provided on a base 30 provided at the bottom of the heating furnace 2, and the motor device 31 is driven via a gear transmission mechanism 32, etc. drive shaft 3
3, the parison conveyor 3 is configured to be continuously driven at a predetermined low speed. Further, a camshaft 35 is provided which is rotatably driven in synchronization with the driveshaft 33 via a chain transmission mechanism 34 etc., and a plurality of timing cams 36 provided on the camshaft 35 are used for system control. A plurality of microswitches (not shown) are configured to be controlled. That is, the plurality of timing cams 36 are rotated at a low speed in synchronization with the parison transfer conveyor 3 which is driven to transfer at a constant speed, and are used as a feeder in the parison supply device 5, a rotary chute, and a parison input guide in the parison input device 4, which will be described later. It is configured to perform system control such as controlling the operating timing of the shutter, etc., and controlling the fixed position stop of the parison transfer conveyor 3.

Next, the parison supply device 5 will be explained with reference to FIGS. 1 to 4.

First, as shown in FIG. 1, the parison supply hopper 4
A parison supply conveyor 41 is provided consecutively to 0. The parison supply conveyor 41 is configured, for example, by a conveyor in which an endless chain 44 is wound between a pair of upper and lower sprockets 42 and 43, and a large number of conveying plates 45 are attached to the circumferential surface of the endless chain 44 at regular small intervals. . This parison supply conveyor 41 is inclined at the steepest possible interval within a range that can safely convey the parisons 1, and the upper sprocket 42 is driven by a motor 46, and the endless chain 44 moves in the direction of arrow b in FIG. It is configured to be rotationally driven.

That is, parison 1 is placed in the parison supply hopper 40.
A large amount of parisons are stored horizontally, and the parison 1 is located at the arrow b of the parison supply conveyor 41.
As the parison supply conveyor 41 rotates in the direction, the parison supply conveyor 41 remains in its horizontal state from the outlet 47 of the hopper 41.
is supplied to the bottom end of the The supplied parisons 1 are placed one by one on the plate 45 of the endless chain 44 and conveyed in the direction of arrow b. The parisons 1 transported to the upper end of the parison supply conveyor 4 are sequentially transported in a horizontal state from an exit 48 at the upper end onto a fixed chute 49 provided subsequently. has been done. Note that the outer periphery of the parison supply conveyor 41 is covered with a cover 50.

Next, as shown in FIGS. 3 and 4, the fixed chute 49 has a substantially U-shaped cross section and is gently inclined downward on one side. A stopper plate 52 is provided at the inclined lower end of the fixed chute 49, and an opening 53 is provided inside the stopper plate 52. A kicker 54 is disposed within the opening 53, and this kicker 54 has a vertical shape and is moved upward by the piston rod 55a of the air cylinder 55, so that the lowered position shown by the phantom line in FIG. It is configured to be driven up and down between the raised position and the raised position. The upper end surface of the kicker 54 is formed into a slope 56 that is steeply inclined downward on one side. Further, a rotary chute 58 is arranged outside the stopper plate 52. This rotary chute 58 has a substantially U-shaped cross section, and is controlled by the rotary shaft 60 of the horizontal rotary cylinder 59 between a horizontal state shown by a solid line in FIG. 4 and a vertical state shown by an imaginary line. It is configured to be rotated approximately 90 degrees between the two.

That is, the parisons 1 that are sequentially conveyed horizontally from the parison supply conveyor 41 onto the fixed chute 49 roll on the fixed chute 49 in the direction of arrow c and collide with the stopper plate 52, causing the plurality of parisons 1 to They are arranged in a line on this fixed chute 49. At this time, a pair of micro switches 61, 6 attached to the lower part of the fixed chute 49
2 actuators 61a, 61b are inserted through a pair of slits 63, 64 provided in a fixed chute 49 and protrude above the fixed chute 49, and the parison 1 rolls on the fixed chute 49 in the direction of arrow c. When the actuator 6
1a and 61b are pressed in sequence to turn these microswitches 61 and 62 ON and OFF in sequence. A predetermined number of parisons 1 are arranged on the fixed chute 49, and one micro switch 61 on the upper end side of the fixed chute 49 in the inclined direction is turned on for a certain period of time.
When the condition is reached, the motor 46 is stopped by the operation of the timer circuit, and the parison supply conveyor 41 is stopped.
The unloading of parison 1 will be temporarily suspended.

On the other hand, the kicker 54 is initially in the lowered position shown by the imaginary line in FIG. Then, at a predetermined timing, the kicker 54 is activated by the air cylinder 55 to the third position.
It is raised to the raised position shown by the solid line in the figure. Then, the parison 1 is pushed up in a horizontal state on the slope 56, overcomes the stopper plate 52, and is transferred into the rotary chute 58. Subsequently, the rotating chute 58 is rotated approximately 90 DEG in the direction of the arrow d in FIG. 4 by the rotating cylinder 59. Then, the parison 1 in the rotary chute 58 is rotated from a horizontal state to approximately 90 degrees, changes its posture to a vertical state, and slides down from within the rotary chute 58 to the parison feeding guide of the parison feeding device 4, which will be described later. Supplied vertically within the At this time, a fixed inclined guide 65 having a substantially U-shaped cross section is provided on the rotating direction side of the rotary chute 58 in opposition to it, and the parison 1 is mounted on the inclined guide 6.
5 and is vertically fed into the parison input guide. Further, the kicker 54 and the rotary chute 58 are automatically returned to the initial lowered position and horizontal state after the above operation, and the slope 5 of the kicker 54 is automatically returned to the initial lowered position and horizontal state.
The next parison 1 is placed on top of 6. By repeating the above operation, the parisons 1 on the fixed chute 49 are sequentially supplied to the parison feeding device 4, and when the parisons 1 on the actuator 61a are exhausted, the actuator 61a is again projected onto the fixed chute 49 and the micro switch is activated. 61 is
The motor 46 is turned OFF, and the motor 46 is operated again, and the parison supply conveyor 41 resumes carrying out the parison 1. Therefore, a predetermined number of parisons 1 are always carried out onto the fixed chute 49, but if the number of parisons 1 on the fixed chute 49 decreases below the predetermined number due to some reason such as a malfunction of the parison supply conveyor 40. If this happens, the actuator 62a of the other microswitch 62 may protrude above the fixed chute 49, causing the microswitch 62 to
is ON [one micro switch 61 is ON-
OFF operation is reversed. ], and the safety circuit is configured to operate the alarm buzzer, lamp, etc.

Next, the parison feeding device 4 is installed as shown in FIGS.
This will be explained using figures.

First, as shown in FIGS. 5 and 6, a parison input guide 71 is vertically disposed below the parison supply position by the rotary chute 58. The parison feeding guide 71 is formed of a rectangular tube with a square cross section, and has openings 72 and 73 at both upper and lower ends. Further, a front opening 74 having a predetermined height is provided on the front surface of the parison feeding guide 71 and is continuous with the lower end opening 73. A door plate 7 is provided on the upper end side of this front opening 74.
5, and this door plate 75 is pivotally attached to one side of the parison feeding guide 71 via a hinge 77 with a spring 76, and the closed state shown in FIGS. is configured to hold.

Next, as shown in FIGS. 9 to 11, a pair of left and right parison receivers 79a and 79b are provided below the lower end opening 73 of the parison input guide 71. And these parison receivers 79a, 79b
Divided truncated conical surfaces 80a and 80b, which are formed by dividing a truncated conical surface extending over these opposing portions into two, are formed downward on the upper surface of the . These parison receivers 79a and 79b are connected to the back side of the parison feeding guide 71 via a pair of fulcrum pins 82a and 82b by means of a pair of rings 81a and 81b which are approximately L-shaped and arranged symmetrically. It is pivoted so that it can rotate freely in the direction. On the other hand, as shown in FIGS. 8 and 9, a controlled rod 83 for controlling the opening and closing of both parison receivers 79, 79b is vertically mounted on the upper end side of the back surface of the parison feeding guide 71 via a sliding guide 84. It is attached so that it can slide freely in the direction. Both left and right ends of a connecting rod 85 horizontally connected to the lower end of the controlled rod 83 and a pair of links 81a, 81
The outer ends of both fulcrum pins 82a, 82b of 1.b are connected by a pair of direct connection rods 86a, 86b. The upper and lower ends of each connecting rod 86a, 86b are pivotally connected to the connecting rod 85 and both links 81a, 81b via pins 87a, 87b, respectively. Positioning recesses 88 and 89 are provided on one side of the controlled rod 83 at two locations, upper and lower, and these recesses 88 and 89 are selectively engaged to position the controlled rod 8.
Positioning steel ball 90 for positioning 3
is held in a ball receiver 91 provided on one side of the sliding guide 84. Note that this steel ball 90 is located in a ball receiver 91 and is pressed against one side of the controlled rod 83 by a spring 92, and the spring 92 is attached by a set screw 93. Further, an arm rod 94 that projects horizontally in the direction of the back surface of the parison input guide 71 is connected to the upper end of the controlled rod 83.

Next, as shown in FIGS. 7 to 9, the parison feeding guide 71 is fixed to a slider 97 via a bracket 96 on the other side of its upper end.
The slider 97 is guided by a pair of left and right guide shafts 98 that are vertically fixed, and is movable up and down. A slider 97 is connected to the upper end of 99a via a bracket 100. Therefore, the parison feeding guide 71 is driven up and down by the piston rod 99a of the air cylinder 99 between the raised position shown in solid lines in FIGS. 7 to 10 and the lowered position shown in phantom lines. ing.

By the way, the parison feeding guide 71 is located at the upper part of the upper wall 102 of the working chamber 10 as shown in FIGS.
As shown in FIG. 3, the parison transfer conveyor 3
are arranged vertically facing each other on the transport path. As shown in FIGS. 7 to 10, an opening 103 is provided in the upper wall of the parison feeding guide 71 directly below and facing it, so that when the parison feeding guide 71 is lowered to the lowered position, The parison input guide 71 is inserted into the work chamber 10 through the opening 103. At this time, the lower end opening 73 of the parison input guide 71 is brought close to the upper end of the parison insertion pin 17 on the parison transfer conveyor 3. Further, at this time, the parison input guide 71 is arranged so that its front opening 74 faces the front side in the transfer direction (arrow a direction) of the parison transfer conveyor 3. On the other hand, the opening 103 is configured to be opened and closed by a shutter plate 104 provided horizontally. The shutter plate 104 is guided by a guide frame 105, and as shown in FIG.
It is configured to be driven to open and close at.

Next, as shown in FIGS. 8 and 10, when the parison feeding guide 71 is raised to the raised position and lowered to the lowered position, the controlled rod 83 comes into contact with the upper and lower pair. stopper 10
8,109 are provided. At this time, the upper stopper 108 is inserted through a fixed bracket 110 and is attached so as to be movable up and down, and is always held in place by a buffer spring 111.
It is energized to protrude downward. Further, the lower stopper 109 is constituted by an adjustment screw, and is screwed into a fixed bracket 112 from below and protrudes above the fixed bracket 112. Further, as shown in FIGS. 5, 6, and 9, a micro switch 114 is attached to one side of the parison input guide 71, and its actuator 114a is connected to a slit provided on one side of the parison input guide 71. 11
5 is inserted into the parison input guide 71 thereof.

Next, as shown in FIGS. 12 and 13, there are two sections in the working chamber 10, one on the front side and the other on the rear side in the transfer direction (arrow a direction) of the parison transfer conveyor 3.
A parison insertion position 117 by the parison insertion device 4 and a parison extraction position 118 by the parison extraction device 6 are provided at the location. A pair of parison detection pins 119 and 120 are provided at a position on the front side of the parison input position 117 and the parison removal position 118 in the transfer direction (direction of arrow a) of the parison transfer conveyor 3. Note that both parison detection pins 11
9 and 120 are attached to rotary actuators 121a and 122a of a pair of micro switches 121 and 122 attached to the outside of the sealing wall 12, respectively, and are inserted through a pair of slits 123 and 124 provided on the sealing wall 12. It is inserted into the working chamber 10. Also, both parison detection pins 11
9 and 120 are energized by springs (not shown) in the backward movement position shown by the solid line in FIG. ing.

The parison feeding device 4 is constructed as described above, and when the parison feeding guide 71 is raised to the raised position as shown in FIG. The parison 1 is vertically inserted into the guide 71 from its upper end opening 72.

At this time, as shown by the solid line in FIG. 10, the controlled rod 83 is positioned at a lowered position relative to the sliding guide 84 by the steel ball 90 engaged in the upper positioning recess 88. In connection with this, the lower end opening 73 of the parison input guide 71 is closed by both parison receivers 79a and 79b. Therefore, the parison 1 inserted into the parison input guide 71 as described above is received by both parison receivers 79a and 79b.
At this time, the lower end of the parison 1 is a divided truncated conical surface 8.
The parison feeding guide 7 is engaged with 0a and 80b.
It is automatically aligned and positioned at the center position of 1.
Further, when the parison 1 is inserted into the parison insertion guide 71, the actuator 114a of the micro switch 114 is pressed and turned ON, and it is detected that the parison 1 is correctly inserted into the parison insertion guide 71. However, the micro switch 114 turns on at the predetermined timing.
If this is not the case, a safety circuit is configured to operate a sound warning buzzer, a lamp, etc. as if the operation of inserting (supplying) the parison 1 into the parison insertion guide 71 was not performed correctly.

Next, at a predetermined operating timing, the air cylinder 106 slides the shutter plate 104 in the direction of arrow e in FIGS. 5 and 8, opening the opening 103. Also, following this, air cylinder 9
The slider 97 is lowered by the slider 97, and the parison input guide 71 is inserted into the working chamber 10 through the opening 103 as shown in FIG. 6, and is lowered to the lowered position.

However, the downward movement of the parison insertion guide 71 is performed in conjunction with the movement of the parison transfer conveyor 3, and one of the parison insertion pins 17, which is being continuously transferred at a low speed in the direction of the arrow a in FIG. In synchronization with the movement to the parison input position 117, that is, the position directly below the parison input guide 71, the parison input guide 71 is lowered to the lowered position.
When the parison insertion guide 71 reaches the lowered position, its lower end opening 73 approaches the upper end of the parison insertion pin 17 as shown by the imaginary lines in FIGS. 7 and 8.

On the other hand, almost at the same time when the parison feeding guide 71 reaches the lowered position, the arm rod 94 comes into contact with the upper end of the lower stopper 109 and is pushed up relatively, as shown by the imaginary lines in FIGS. 8 and 10. Then, the controlled rod 83 is raised relative to the sliding guide 84,
The connecting rod 85 and both connecting rods 86a and 86b are pulled up, and both parison receivers 79a and 79b are connected to each other via both links 81a and 81b as shown in FIGS. 9 and 10.
Both fulcrum pins 82a, 8 as shown by imaginary lines in the figure.
2b in the direction of the arrow f, and the lower end opening 73 of the parison insertion guide 71 is opened. At this time, when the controlled rod 83 is pulled up, the steel ball 90 is removed from the upper positioning recess 86 against the spring 92 and engaged with the lower positioning recess 89, so that the controlled rod 83 is not slid. Positioned in a raised position relative to the guide 84, both parison receivers 79a, 79 are positioned in this regard.
b is held in the open state.

On the other hand, at the moment when the lower end opening 73 of the parison insertion guide 71 is opened, the parison 1 in the parison insertion guide 71 falls from the lower end opening 73 under its own weight, and as shown by the solid line in FIG. It is inserted into the outer periphery from above. The inserted parison 1 is engaged with the parison holder 21 of the parison insertion pin 17, as shown in FIG. 13, and is held substantially vertically by the parison steady collar 20. Note that even during the operation of inserting the parison 1 into the parison insertion pin 17, the parison transfer conveyor 3 is continuously transferring the parison at a low speed. Therefore, after the parison 1 is inserted, the door plate 75 of the parison input guide 71 is pushed open against the spring 76 as shown by the imaginary line in FIG. Get out.

After the parison 1 is inserted (supplied) into the parison insertion pin 17 as described above, the parison insertion guide 71 is raised and returned to the initial raised position by the air cylinder 99, and the shutter plate 104 is raised by the air cylinder 106. The opening 103 is returned to the original closed position and is closed again. At this time, when the parison feeding guide 71 is raised to the raised position, the arm rod 94 comes into contact with the lower end of the upper stopper 108 and is pushed down relatively, as shown by solid lines in FIGS. 8 and 10. Note that the impact at this time is buffered by the spring 111. Then, the controlled rod 83 is lowered relative to the sliding guide 84, the connecting rod 85 and both connecting rods 86a, 86b are pushed down, and both parison receivers 79a, 79b are moved to the position shown in FIG. 9 via both links 81a, 81b. Then, as shown by the solid lines in FIG. 10, the parison feeding guide 71 is rotated in the direction of the arrow g about both fulcrum pins 82a and 82b, and the lower end opening 73 of the parison feeding guide 71 is closed again. Note that by pressing down the controlled rod 83 at this time, the steel ball 90 is removed from the lower positioning recess 89 against the spring and reengaged with the upper positioning recess 88, so that the controlled rod 83 is not slid. It is positioned in the lowered position again with respect to the guide 84, and in this connection both parison receivers 79a, 79
b is maintained in the above-mentioned closed state.

On the other hand, the parison 1 inserted into the parison insertion pin 17 and held substantially vertically is transferred from the working chamber 10 into the heating furnace 2 by being transferred by the parison transfer conveyor 3. In the heating furnace 2, the parison 1 is rotated while being transferred in the direction of the arrow a in FIG.
It is heated evenly and uniformly over its entire circumference and length to a stretching temperature of 170°C to 170°C.

It should be noted that an error in inserting the parison 1 into the parison insertion pin 17 by the above-mentioned parison insertion device 4 may occur, and for example, the parison 1 may unexpectedly tilt with respect to the parison insertion pin 17 as shown by the imaginary line in FIG. When the parison 1 is inserted and the insertion depth becomes shallow, the inclined parison 1 comes into contact with the parison detection pin 119 and the parison detects the pin 119.
It is rotated from the return position shown by the solid line in the figure to the position shown by the imaginary line. At that moment, the micro switch 121 is turned on, and a safety circuit is activated to operate the alarm buzzer, lamp, etc., assuming that the parison 1 has not been inserted (supplied) into the parison insertion guide 17 correctly. ing. At this time, the parison transfer conveyor 3 is always automatically stopped at a fixed position.

Further, the heated parison 1, which is held in a substantially vertical position by the parison insertion pin 17 and circulated through the heating furnace 2 while rotating, is returned to the working chamber 10 again to form the parison shown in FIG. Removal position 11
At step 8, the parisons are sequentially taken out by the parison takeout device 6. Although a description of this parison take-out device 6 will be omitted, it is inserted into the work chamber 10 from an opening having a shutter plate provided on the upper wall of the work chamber 10, similar to the above-mentioned parison input device 4, It is configured such that the parison 1 is pulled out upward from the top. At this time, an error occurs in taking out the parison 1 by the parison taking out device 6, and for example, as shown by the imaginary line in FIG.
If the parison 1 remains on the parison insertion pin 17 and is transferred to the parison insertion position 117, the parison 1 will come into contact with the parison detection pin 120 and return to the position indicated by the solid line in FIG. Rotate from the moving position to the position shown by the imaginary line. At that moment, the micro switch 122 is turned ON, and a safety circuit is activated to operate the alarm buzzer, lamp, etc., assuming that the parison 1 has not been taken out correctly. Also at this time, the parison transfer conveyor 3 is always automatically stopped at a fixed position.

In the embodiments described above, the parison loading guide 71 is simply raised and lowered in a fixed position. After being lowered to the position, the parison is moved horizontally at the same speed for a certain distance in the transfer direction of the parison transfer conveyor 3, and then the parison input guide 71
It is also possible to configure the parison input guide 71 to be driven back so as to raise it and return it in the opposite direction to the conveyance direction of the parison transfer conveyor 3 to return to the initial return position.

As described above, the present invention is a parison reversing supply device that cuts a straight pipe to a fixed size and inverts and supplies a double-cut parison. There is a supply conveyor that sequentially transports the food onto a fixed chute placed at the top, a kicker installed at the lower end of the fixed chute and driven up and down, and a feeder installed adjacent to the feeder that moves the feeder from a horizontal state. and a rotating chute having a substantially U-shaped cross section that is rotated approximately 90 degrees vertically, and the parison conveyed by the supply conveyor is placed on the fixed chute in a horizontal state. Roll it sequentially toward the lower end of the fixed chute,
The parisons are sequentially pushed up by the above-mentioned kicker and sequentially transferred to the above-mentioned rotary chute, and by the rotation of this rotary chute, the parisons are changed to a vertical position and are sequentially transferred to the parison feeding device of the parison transfer conveyor where they are circulated in the heating furnace. This is a parison reversal feeding device configured to feed vertically.

Therefore, according to the present invention, the parison supplied to the rotating chute in a horizontal state is forcibly changed to a vertical state by the rotation of the rotating chute, and is then supplied to the parison feeding device, which causes a feeding error. The supply of parisons can be ensured at all times. In addition, the parisons can be conveyed onto a fixed chute by the supply conveyor, and a predetermined amount of parisons can be accumulated on the fixed chute, so that each parison is supplied to the parison input device one by one. There is no need to operate the conveyor. That is, the supply conveyor is operated continuously for a predetermined period of time to accumulate a predetermined amount of parisons on the fixed chute, and when the accumulated parisons have been supplied to the parison input device in a predetermined amount, the supply conveyor is operated again for a predetermined period of time. It may be operated continuously to replenish the parisons on the fixed chute, and there is no need to operate the feed conveyor frequently at short time intervals.
Moreover, since the supply conveyor conveys the parisons in a horizontal state, the interval at which the parisons are conveyed on the supply conveyor can be made very small.
Therefore, a large number of parisons can be continuously conveyed onto a fixed chute by rotating the supply conveyor a small distance. Therefore, the operation time of the supply conveyor can be very shortened, and early damage to the supply conveyor and its drive mechanism can be prevented as much as possible, resulting in extremely high durability and reliability. In addition, the supply of parisons to the parison feeding device is performed by the linked operation of the picker and the rotary chute, and can be performed separately from the conveyance operation of the parisons by the supply conveyor, so that the parisons can be constantly supplied. It can be done quickly.

However, according to the present invention, the parison can be moved from a horizontal position to a vertical position extremely reliably by using an extremely simple mechanism in which a rotating chute whose cross section is approximately U-shaped is rotated approximately 90 degrees by a rotating cylinder or the like. It is possible to rotate the parison at any time, and errors in rotation of the parison do not occur at all.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention.
Fig. 1 is a partially cutaway side view of the whole, Fig. 2 is a partially cutaway plan view of the same as above, Fig. 3 is a vertical cross-sectional side view of the parison supply device portion, Fig. 4 is a perspective view of the same as above, and Fig. 5 is a partially cutaway side view of the same.
Figures 6 and 6 are perspective views of the parison loading device.
7 is a partially cutaway front view of the same as above, FIG. 8 is a partially cutaway side view of the same as above, FIG. 9 is a sectional view taken along the line of FIG. 8, and FIG. Figure 11 is a perspective view of the parison receiver of the parison loading guide.
FIG. 12 is a horizontal cross-sectional plan view showing the parison loading and unloading positions, and FIG. 13 is a vertical cross-sectional side view of the same. In addition, in the symbols used in the drawings, 1...parison, 2...heating furnace, 3...parison transfer conveyor, 4...parison feeding device, 5...parison supply device, 40...parison supply hopper, 41
... Parison supply conveyor, 44 ... Endless chain, 45 ... Plate, 46 ... Motor, 49 ...
...Fixed chute, 52...Stopper plate, 53...
...Opening, 54...Kitsuka, 55...Air cylinder, 56...Slope, 58...Rotating chute, 5
9...Rotating cylinder.

Claims (1)

[Scope of utility model registration request] In a parison reversing supply device that cuts a straight pipe to a certain size and supplies a double-cut parison inverted, the parison is supplied horizontally into the supply hopper and placed at the top in that horizontal state. a supply conveyor that sequentially transports the fixed chute onto the fixed chute; a kicker installed at the lower end of the fixed chute and driven up and down; and a feeder installed adjacent to the kicker and driven to rotate approximately 90 degrees from a horizontal position to a vertical position. and a rotating chute whose cross section is approximately U-shaped, and the parisons conveyed by the supply conveyor are placed on the fixed chute in a horizontal state and are sequentially moved toward the inclined lower end side of the fixed chute. The parisons are rolled, and the parisons are sequentially pushed up by the kicker and transferred to the rotary chute, and the rotation of the rotary chute changes the posture of the parisons to a vertical position, and the parisons are transferred to the parison transfer conveyor where they are circulated in the heating furnace. A parison reversing supply device configured to sequentially feed the parison vertically to the parison input device.