JP3760267B2 - Preform accumulation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for accumulating preforms conveyed from a primary molding process mainly in the production of plastic bottles such as PET bottles.
[0002]
[Prior art]
For example, a bottle of a polyester resin such as polyethylene terephthalate (so-called PET) (hereinafter referred to as PET bottle) is formed by biaxially stretching by preforming a preform (parison) as an intermediate body by a blow molding method or the like. Can be obtained. In the production of this PET bottle, a preform that is generally carried out continuously from the primary molding process due to a time difference between the primary molding for producing the preform and the secondary molding for obtaining the final product. Are once accumulated in a container and supplied to the secondary molding process.
[0003]
The primary molded preform usually has a flange at the base of the mouth, which is held by a predetermined conveyor and continuously conveyed, and is cooled to a predetermined temperature during the conveyance, It is transported to the stacking position and dropped and stacked in a container waiting under the position.
[0004]
At this time, if the fall height of the preform is high, the preform may be damaged by an impact at the time of dropping. In addition, if the dropping position is one place, the preforms are piled up at the dropping position, and this may collapse and cause scratches, and the preform is not uniformly accumulated. The collection efficiency of the entire container also deteriorates.
[0005]
As a preform stacking device that solves the above-described problems, the container is placed on a rotary table on a lifter, and the preform fed by the conveyor is rotated at a constant speed while rotating at a constant speed. The preform is conveyed to an upper position shifted from the rotational axis of the rotary table by a grip conveyor for turning the preform horizontally, and the preform is dropped in a horizontal state from the position to accumulate the preform in a container. Has been proposed (Patent Document 1 below).
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-157702
[0007]
[Problems to be solved by the invention]
By the way, in a preform stacking apparatus, when a predetermined amount of preforms is stacked in a container, it is replaced with an empty container. Since the collection operation cannot be performed when replacing the container, it is necessary to temporarily stop the supply of the preform from the conveyor. However, the production by the molding machine should be stopped due to the characteristics of the molding machine in the primary molding process and the molding efficiency. I can't.
[0008]
Therefore, conventionally, it has been considered to temporarily hold the preform to be transported for the time necessary for the container exchange or to provide an apparatus for stocking in the part of the transport conveyor. For example, in Patent Document 1 described above, the container can be replaced by switching the conveyance path from the grip conveyor to the accumulation conveyor by the switching conveyor provided in the relay section between the conveyance conveyor and the grip conveyor from the primary molding process. ing.
[0009]
However, the mechanism that temporarily stops the supply of preforms, such as the provision of an accumulation conveyor in the transport conveyor section, complicates the structure, increases the equipment cost, and replaces the container due to some operational trouble. If it takes a long time, it may be necessary to stop the supply to the accumulation conveyor.
[0010]
Further, it is desired that the preforms are accumulated substantially uniformly throughout the entire region including the four corners. However, as in Patent Document 1, when the containers are accumulated by rotating, the rectangular container There is also a problem that it is impossible to accumulate evenly in the four corners inside.
[0011]
The present invention has been made in view of the above, and an object of the present invention is to temporarily store preforms using a mechanism for carrying them into a container at the time of container replacement. A self-contained stacking device that can perform container exchange while continuously carrying preforms by means of, and further, throws and stacks preforms almost uniformly into the four corners of the container. An integrated device is provided.
[0012]
[Means for Solving the Problems]
The present invention for solving the above problems is an apparatus for dropping and collecting preforms conveyed by a conveyor, and has a pair of conveyor members arranged side by side so as to be separated from each other. The preforms fed at intervals are locked from both sides by the two conveyor members and held in parallel, and when the predetermined number of preforms are held, the two conveyor members are separated to move the preforms together. A holding conveyor provided to be dropped onto the holding conveyor, and a feeding means for receiving a predetermined number of preforms falling from the holding conveyor and feeding the preform to the side of the holding conveyor. A stocking / unloading base provided with opening / closing means for temporarily stocking the preform at the end, and the feeding In feed forward from the platform, the switching means When opened And a carry-in bucket device for receiving preforms sent out simultaneously from the feed table and loading the preform into a container disposed in front of the feed table in the feed direction.
[0013]
According to this stacking device, the preforms fed by the conveyor can be automatically and efficiently put into the container and accumulated, and the preforms are temporarily stored in the delivery table to the carry-in bucket device until the preforms reach a predetermined quantity. In order to keep stock, by using this stock function, it is possible to exchange a container for completion of accumulation and an empty container without stopping the conveyance of the preform by the conveyor.
[0014]
In particular, in the case of the present invention, The carrying-in bucket device has a bucket that can move in the front-rear direction and move up and down with respect to the sending-out direction of the sending-out base within the arrangement range of the container, and the bucket is seen from the front in the sending-out direction, A horizontally long bucket having a width substantially equivalent to the horizontal width in the container and capable of receiving the preform sent from the delivery table over the entire width, and the received preform is carried into the container It is provided so that it can be dropped over substantially the entire width. As a result, the preform can be charged almost uniformly into the four corners of the container, and can be efficiently integrated.
[0015]
The stock-use delivery stand includes a shooter that slides the preform falling from the holding conveyor under the holding conveyor almost without collecting and dispersing, and for feeding the preform fed through the shooter. A conveyor as a means is provided, and an end on the delivery side of the conveyor has a width corresponding to the horizontally long bucket, and the preform can be sent out substantially uniformly over substantially the entire width in the bucket. . This The preform delivered from the delivery table will be accommodated substantially evenly throughout the bucket, and thus From bucket In the container The preform to be charged is dispersed substantially uniformly over the entire charging range, so that it can be laminated in a balanced manner.
[0016]
A counter that counts the number of preforms sent from the transport conveyor to the connecting portion between the transport conveyor and the holding conveyor and transmits the count value to the control unit is provided. It is good to comprise so that both conveyor members may carry out the separation operation | movement. As a result, the number of preform drops due to a single drop operation from the holding conveyor can be made constant, and each operation can be easily controlled, and the number management such as the number of container stacks can be easily performed.
[0017]
The counter is composed of a turret board in which substantially semicircular recesses into which a preform is fitted on a circular outer peripheral edge are formed at equal intervals, and the preform is fed from the conveyor to the holding conveyor by the rotation of the turret board. What is comprised so that a number may be counted is suitable. Thereby, while the structure is simple, the detected value of the number is made accurately and the implementation becomes easy.
[0018]
In the connection part of the said conveyance conveyor and the said holding conveyor, each position of the connection boundary of one corresponding conveyor members of both conveyors, and the connection boundary of the other corresponding conveyor members is mutually shifted in the feed direction. Yes. Accordingly, the preform feeding operation is reliably performed, and the preform can be held in a stable state when the turret is stopped.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described based on examples shown in the drawings.
[0020]
FIG. 1 is a plan view showing an embodiment of a preform stacking apparatus according to the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a side view thereof.
[0021]
In the figure, reference numeral 1 denotes a conveyor for primary-formed preform P, which is a pair of conveyors arranged side by side so as to be latched and clamped from both sides under flange P1 on the outer periphery of the base of the neck of the preform P. It consists of members 1a and 1b. The conveyor members 1a and 1b are usually made of endlessly rotating chains or belts.
[0022]
2 is a holding conveyor that temporarily holds the preforms P sequentially conveyed by the transfer conveyor 1 at a predetermined interval in succession to the transfer conveyor 1 and arranged in parallel so as to be relatively separated from each other. It consists of a pair of conveyor members 2a and 2b.
[0023]
The holding conveyor 2 holds the preform P sent from the conveyor 1 from both sides under the flange P1 by both conveyor members 2a and 2b and holds them in a parallel state, and also holds a predetermined number of preforms P. When the two conveyor members 2a and 2b are separated from each other, the preforms P are provided so as to drop downward simultaneously.
[0024]
In the case of the illustrated embodiment, as shown in an enlarged view in FIGS. 4 to 6, the frames 3a and 3b are arranged in parallel outside the pair of conveyor members 2a and 2b, and are pivotally supported by the frames 3a and 3b. The conveyor members 2a and 2b are hung on the sprockets 4a and 4b, and supported so as to be endlessly rotatable. In the frame 3a that supports one of the conveyor members 2a and 2b, guide pins 5 and 5 protrude in the direction opposite to the opposite side to the other frame 3b in the vicinity of both ends in the longitudinal direction. The guide pins 5 and 5 are slidably penetrated through the fixed frame 6 disposed on the outside, and are supported so as to be separated from and close to the other frame 3b. A connecting plate 8 is stretched between the guide pins 5 and 5 at both longitudinal ends of the frame 3a. An advancing / retreating means 7 such as an air cylinder is interposed between the connecting plate 8 and the fixed frame 6. By the operation of the advancing / retreating means 7, the frame 3a performs the separation and approaching operations. Is provided. Reference numerals 6a and 6b in the figure denote impact buffering portions at the time of separating and approaching the frame 3a.
[0025]
The advance / retreat means 7 is operated by a signal from a control unit (not shown) when the number of preforms P on the conveyor members 2a, 2b reaches a certain number, and the frame 3a is moved from the other frame 3b. The two conveyor members 2a and 2b supported by the frames 3a and 3b are separated from each other so as to expand, and the preform P is dropped downward, and after this dropping action, the original state is restored. To be controlled.
[0026]
Although not shown, the advance / retreat means 7 can be interposed between the frame 3a and the fixed frame 6.
[0027]
9a and 9b in the figure are drive motors for the two conveyor members 2a and 2b, which are connected to the sprockets 4a and 4b, respectively. Particularly, the motor 9a on the conveyor member 2a side can perform the above-mentioned separation operation. It is connected via a transmission mechanism.
[0028]
A counter 10 that counts the number of preforms P fed to the holding conveyor 2 and transmits the count value to a control unit (not shown) at a connecting portion between the conveying conveyor 1 and the holding conveyor 2. Is provided, and the advancing / retreating means 7 is operated on the basis of the counted value to separate the conveyor members 2a, 2b of the holding conveyor 2 from each other.
[0029]
In the case of the figure, the counter 10 has a vertical axis with respect to the conveyor running surface at the connection portion between the conveyor members 1b and 2b corresponding to one of the conveyor 1 and the holding conveyor 2, respectively. A turret board 11 is arranged. The turret board 11 has a large number of arc-shaped recesses 12 corresponding to the preforms P formed on the outer periphery thereof at regular intervals, and each preform P fed from the transport conveyor 1 is fitted into the outer periphery recesses 12. The turret board 11 is fed at regular intervals by the rotation of the turret board 11 (see FIG. 7 and FIG. 8). The number of preforms P that have passed through the board 11 can be counted. Further, a pulse encoder or the like can be used as a counting method.
[0030]
The counter 10 is not limited to the one using the turret board 11 of the illustrated embodiment, and can be implemented using other various detection means such as a proximity switch.
[0031]
In the case of the figure, the connecting portion 15 between the conveyor 1 and the holding conveyor 2 includes a connecting boundary 15a between one corresponding conveyor member 1a and 2a and a connecting boundary 15b between the other conveyor members 1b and 2b. The positions of the conveyor members 1a, 1b and 2a on both sides are thereby shifted in the feed direction so that the transport conveyor 1 and the holding conveyor 2 are arranged at the same level. , 2b is positioned in the feed direction so that the feeding action of the preform P is ensured without interruption, and the preform can be held in a stable state when the turret board is stopped. It is like that.
[0032]
Note that the preform P to be transported is received below the connection boundaries 15a and 15b between the conveyor members 1a and 1b of the transport conveyor 1 and the conveyor members 2a and 2b of the holding conveyor 2, respectively. A delivery member (not shown) for delivery is provided.
[0033]
In the figure, reference numeral 20 denotes a stock and double feed comprising a conveyer 21 as a feed means for receiving a predetermined number of preforms P falling from the hold conveyor 2 and sending it to the side in the feed direction of the hold conveyor 2. An opening / closing means 22 for temporarily stocking the preform P is provided at the end of the conveyor 21 on the delivery side.
[0034]
In the case of the delivery stand 20 of the embodiment shown in the figure, below the holding conveyor 2 is approximately the same as the fall width of the preform P from the holding conveyor 2, or slightly narrower than the drop width as shown in the figure. The shooter 23 is provided with a relatively steep shooter 23 having a width and capable of sliding the preform P falling from the holding conveyor 2 almost without being collected and dispersed. The conveyor 21 made of a relatively wide endless belt having substantially the same width as that of the belt is provided so as to be slightly lower toward the front side. The width of the end on the delivery side of the conveyor 21 (that is, the delivery width) is a width corresponding to a laterally long bucket, which will be described later, so that the preform P can be delivered almost uniformly over substantially the entire width in the bucket. Set to
[0035]
In the figure, reference numerals 23a and 23a denote both side plate portions rising from the bottom plate 23b of the shooter 23, and 21a and 21a denote both side plate portions erected on both side portions of the conveyor 21. It is provided so as to prevent falling off the part.
[0036]
Reference numerals 24a and 24b denote rollers for supporting and rotating the endless belt, and a driving motor 25 is connected to the shaft of one of the rollers 24b via a transmission means such as a chain. By giving a required rotation to one roller 24b, the conveyor 21 made of the endless belt can be rotated in the feeding direction. The conveyor 21 may intermittently feed according to the dropping action of the preform P from the holding conveyor 2 or may continuously feed.
[0037]
Further, as the opening / closing means 22, an opening / closing plate 22 b is suspended from a support shaft 22 a that is rotatably provided through the both side plate portions 21 a, 21 a slightly above the end of the conveyor 21 on the delivery side. An advancing / retreating means 27 such as an air cylinder is connected to an arm 26 fixed to the support shaft 22a outside the side plate portion 21a. By the operation of the advance / retreat means 27, the opening / closing plate 22b is formed around the support shaft 22a. It is provided so as to rotate between 13 solid lines and chain lines (between the solid lines and chain lines in FIG. 10) and to open and close. Normally, the opening / closing plate 22b is held in a closed state indicated by a solid line in the figure, stocks the preform P sent by the conveyor 21, and the stock amount of the preform P is a predetermined number, that is, several times (for example, When the number of drops supplied 3 to 4 times is reached, the advance / retreat means 27 is actuated by a signal from a control unit (not shown), and the opening / closing plate 22b is rotated to open the chain line in the figure. Thus, the preform P is sent out.
[0038]
Reference numeral 28 in the figure denotes a guide chute for guiding the preform P delivered from the conveyor 21 into a bucket described later.
[0039]
30, in front of the delivery table 20 in the delivery direction, receives a preform P sent from the delivery table 20 all together with the opening action of the opening / closing means 22, and below the delivery table 20 in the delivery direction. This is a carry-in bucket apparatus for carrying into the arranged container 50.
[0040]
The carry-in bucket device 30 is provided with a bucket 31 that can be moved in the front-rear direction with respect to the delivery direction of the delivery table 20 within the range of placement of the container 50 by a traveling mechanism, and can be moved up and down appropriately by a lifting mechanism. Prepare.
[0041]
As shown in FIGS. 12 to 14, the bucket 31 substantially corresponds to the lateral width in the container 50 and is slightly smaller than the lateral width of the container so that it can enter the container 50 as viewed from the front side in the delivery direction. In order to be able to receive the preform P sent out from the delivery table 20 over the entire width, it is composed of a horizontally long bucket slightly wider than the delivery width from the delivery table 20. Moreover, this bucket 31 consists of what can accommodate normally the preform P of the quantity of several times (for example, 3-4 times) from the said holding conveyor 2 normally. Reference numeral 32 denotes a support member that supports the main body of the bucket 31 so that the bottom can be freely opened and closed.
[0042]
As the travel mechanism, as shown in FIGS. 12 to 14, linear guide slide rails 34, 34 are provided on frames 33, 33 in the front-rear direction located slightly above the both sides of the delivery base 20. On the slide rails 34, 34, a movable table 35 having guide portions 34 a, 34 a that engage with the slide rails 34, 34 on the lower surface is mounted on the slide rails 34, 34. It is provided so that it can move in the direction. Endless belts 39 and 39 are respectively connected to pulleys 37 and 37 on the rotary shaft 36 disposed at the front position on the frames 33 and 33 and pulleys 38 and 38 disposed at the rear position. The pulleys 37 and 37 are rotated together with the rotary shaft 36 by driving of a drive motor 40 that is suspended and connected to the rotary shaft 36, and the belts 39 and 39 are endlessly rotated. The moving table 35 is fixed to the belts 39 and 39 by clamping means, and can move in the front-rear direction in accordance with the rotating action of the belts 39 and 39.
[0043]
Further, as the elevating mechanism, a bowl-shaped frame 41 is erected on the movable table 35, and two guide rails 42, 42 in the vertical direction are arranged side by side on one side of the frame 41, for example, both sides on the front side. An elevating body 43 is provided that engages with the guide rails 42 and 42 so that the elevating body 43 can be moved up and down. The elevating body 43 is provided below the movable body 35 via two suspension bars 44 and 44. The bucket 31 is suspended on the surface. An endless belt 47 is hung on two pulleys 45, 46 arranged at the upper and lower positions on the front side of the frame 41, and the lower pulley 46 is rotated by the drive motor 48, so that the belt 47 is moved in the vertical direction. It is provided to endlessly rotate. The elevating body 43 is fixed to the belt 47 by clamping means, and is provided so as to elevate as the belt 47 rotates.
[0044]
In other words, the bucket 31 can be moved in the front-rear direction by the movable table 35 and is moved up and down by the lifting and lowering action of the lifting and lowering body 43, whereby the preform P received and received from the delivery table 20 is received. It is provided so that it can be loaded into an arbitrary position in the container 50 and dropped over almost the entire width in the container 50.
[0045]
Note that the pulleys 37 and 37 and the belts 39 and 39 of the traveling mechanism and the pulleys 46 and 47 of the elevating mechanism are timing pulleys and timing belts so that the moving distance, the elevating height, and the like can be accurately set. This is particularly preferable in controlling the bucket 31 to move to a predetermined position in the container 50.
[0046]
Reference numerals 49 and 49 in the figure denote operating members for opening and closing the bottom of the bucket 31, which are basically opened and closed by an up and down movement in the vertical direction, and detailed mechanisms thereof are omitted.
[0047]
The container 50 is conveyed to the front of the delivery table 20 by an appropriate conveying means and set at a predetermined accumulation position, and after completion of the accumulation of the preforms P, the container 50 is transferred from the accumulation position to the collection unit and newly emptied. Container 50 is set at the accumulation position.
[0048]
The operation when the preform P is stacked in the container 50 by the above stacking apparatus will be described together with the operation.
[0049]
The preform P, which is continuously conveyed from the primary molding step by the conveyance conveyor 1 at a predetermined interval, is sent from the conveyance conveyor 1 to the holding conveyor 2, and both conveyor members 2a and 2b constituting the holding conveyor 2 are flanged. Locked from both sides under P1 and temporarily held in parallel in the other state. At this time, the number of preforms P sent by the counter 10 provided at the connection portion between the transport conveyor 1 and the holding conveyor 2 is counted. For example, when the preform P is fitted into the concave portion 13 of the turret board 12 and sent, the counting is performed by the rotation of the turret board 12, and the count result is transmitted to the control unit one by one.
[0050]
Thus, when the number of preforms P held on the holding conveyor 2 reaches a predetermined number, the advancing / retreating means 7 in the holding conveyor 2 is activated by a signal from the control unit, and one of the two conveyor members 2a and 2b is operated. The conveyor member 2a moves away from the other conveyor member 2b, and the interval between the conveyor members 2a and 2b is expanded. Thereby, the said preform P latched and hold | maintained between both the conveyor members 2a and 2b falls simultaneously. After the fall, the conveyor member 2a returns to its original state, that is, a position where the preform P can be locked.
[0051]
The predetermined number of preforms P that have fallen from the holding conveyor 2 enter the shooter 23 of the delivery table 20 located below the holding conveyor 2, and are almost collected and diffused with respect to the falling width along the inclination of the shooter 23. Without being spread, it is slid sideways with respect to the feeding direction of the holding conveyor 2 in an expanded state close to the falling width, and is placed on a conveyor 21 as a feeding means provided continuously therewith.
[0052]
The conveyor 21 rotates intermittently or continuously according to the dropping action, and the preform P supplied onto the conveyor 21 is moved in the delivery direction by the conveyor 21. Sent. At this time, the opening / closing plate 22b constituting the opening / closing means 22 at the end portion on the delivery side is in a closed state, and the preform P sent by the conveyor 21 is temporarily stopped by the opening / closing plate 22b as described above and stocked. become.
[0053]
In the same manner, the preform P that is supplied in a predetermined number of drops from the holding conveyor 2 is stocked on the conveyor 21. When this stock amount reaches the number of drops supplied for several times (for example, 3 to 4 times), control is performed. The advancing / retreating means 27 connected to the support shaft 22a of the opening / closing plate 22b is actuated by a signal from a portion (not shown), and the opening / closing plate 22b is rotated to be in the open state of the chain line in the figure and stocked. The preform P is fed by the conveyor 21 feeding action.
[0054]
At this time, the bucket 31 of the carry-in bucket device 30 is waiting in a state where it can be received at the front lower side on the delivery side of the delivery table 20, and the preform P delivered from the delivery table 20 is placed in the bucket 31. Be contained. Since the lateral width of the bucket 31 substantially corresponds to the delivery width of the preform P from the delivery table 20, the preform P is accommodated in the entire bucket 31 substantially evenly.
[0055]
In this accommodated state, the moving table 35 constituting the traveling mechanism of the bucket 31 moves to a position above the container 50 set at the accumulation position by the rotation of the belts 39, 39 driven by the drive motor 40. The elevating body 43 constituting the elevating mechanism of the bucket 31 is lowered by the rotation of the belt 47 driven by the drive motor 48, and the bucket 31 suspended by the elevating body 43 enters the container 50. Then, it descends to near the bottom of the predetermined drop position or near the top of the integrated preform. In this lowered state, the bottom of the bucket 31 is opened, and the stored preform P is dropped. Since the bucket 31 has a width that is slightly smaller than the lateral width in the container 50, the preform P accommodated in the entire bucket 31 is put into the entire lateral width of the container 50.
[0056]
After the dropping, the bucket 31 ascends as the elevating body 43 rises, and the moving base 35 returns to the waiting position slightly below the delivery base 20 and is held in a standby state.
[0057]
In this way, the preform P that is stocked and sent out to a predetermined quantity in the delivery table 20 is received by the bucket 31 of the carry-in bucket device 30, and the container 50 is moved by the movement of the movable table 35 and the lowering of the elevating body 43. The inside of the container 50 is sequentially moved to change the moving position of the movable table 35 so that the loading position is shifted from the previous time, and the preform P is loaded and accumulated almost uniformly throughout the container 50. For example, as shown in FIG. 12, the container 50 is divided into seven sections in the front-rear direction, and the containers 50 are input in the order of the numbers assigned to the sections. Further, as the preform P that has been thrown in is stacked on the bottom of the container, the lowering position of the bucket 31 by the elevating body 43 is appropriately changed, and the throwing is repeated. By doing in this way, it can accumulate almost uniformly in the whole region including the four corners in the container 50.
[0058]
When the accumulation of the preforms P in one container 50 is completed, the container 50 is transported to the collection unit and a new empty container 50 is set. The replacement of the container 50 is performed by the preform P. The container 50 can be exchanged without interrupting the feeding of the preform P from the conveyor 1 to the holding conveyor 2 and thus primary molding. it can.
[0059]
In the embodiment described above, in the delivery table 20, in order to ensure delivery of the preform P stocked when the opening / closing means 22 is opened, a convex portion is provided on the surface of the conveyor 21 as the feeding means, In addition, auxiliary delivery means that can push the preform P can be provided.
[0060]
【The invention's effect】
As described above, according to the preform stacking apparatus of the present invention, the preform can be temporarily stocked using a mechanism for carrying it into the container. While the supply is continued, the accumulation completion container and the empty container can be exchanged. Moreover, the preform device received by the bucket is directly carried into the container by a bucket device including a bucket that can move in the front-rear direction and move up and down within the arrangement range of the container. The preforms can be thrown into the entire surface including the uniform and efficiently integrated. . Therefore, it is not necessary to stop the production by the molding machine in the primary molding process, and the process from primary molding to accumulation in the container can be performed continuously.
[0061]
Claim 2 Sending By using the loading stand, Preforms delivered from the delivery table can be accommodated almost evenly in the entire bucket, and as a result, the preforms introduced from the bucket into the container are distributed and uniformly distributed over the entire introduction range. .
[Brief description of the drawings]
FIG. 1 is a plan view showing an entire embodiment of a preform stacking apparatus according to the present invention.
FIG. 2 is a front view of the apparatus.
FIG. 3 is a front view from the front side in the delivery direction by the delivery table of the apparatus.
FIG. 4 is an enlarged plan view of a holding conveyor portion.
FIG. 5 is a plan view showing a state in which the conveyor members of the holding conveyor are separated from each other.
6 is a cross-sectional view taken along line VI-VI in FIG.
FIG. 7 is an enlarged plan view of a counter portion.
FIG. 8 is an enlarged cross-sectional view of a counter portion.
FIG. 9 is an enlarged plan view of a delivery base portion of the apparatus.
FIG. 10 is an enlarged side view of a delivery base portion of the apparatus.
FIG. 11 is a cross-sectional explanatory view of a delivery table portion from a holding conveyor to a carry-in bucket device.
FIG. 12 is an enlarged side view of the carry-in bucket device portion of the apparatus.
FIG. 13 is an enlarged plan view of a carry-in bucket device portion of the device.
FIG. 14 is an enlarged front view from the front side in the traveling direction of the carry-in bucket device portion of the apparatus.
[Explanation of symbols]
P preform
1 Conveyor
1a, 1b Conveyor member
2 Reservation conveyor
2a, 2b Conveyor member
3a, 3b frame
4a, 4b sprocket
5,5 Guide pin
6 Fixed frame
6a, 6b Shock absorber
7. Advancement / retreat means
8 connecting plate
9a, 9b motor
10 counter
11 Turret board
12 recess
15 Connection between conveyor and holding conveyor
15a, 15b Conveyor member connection boundary
20 Feeding stand for stock
21 Conveyor
21a, 21a Conveyor side plate
22 Opening and closing means
22a spindle
22b Open / close plate
23 Shooter
23a, 23a Both sides of the shooter,
24a, 24b Roller
25 motor
30 carry-in bucket device
31 buckets
32 Support member
33, 33 frames
34, 34 slide rail
34a, 34a guide part
35 Mobile stand
36 Rotating shaft
37, 37 pulley
38, 38 pulley
39,39 belt
40 Drive motor
41 frames
42, 42 Guide rail
43 Lifting body
44, 44 Hanging rod
45, 46 pulley
47 belt
48 Drive motor
50 containers

Claims (5)

An apparatus for dropping and collecting preforms conveyed by a conveyor into a container,
It has a pair of conveyor members arranged side by side so as to be separable, and the preforms fed from the conveyor at a predetermined interval are locked from both sides by the both conveyor members and held in parallel, and a predetermined number of A holding conveyor provided so that the two conveyor members are separated to drop the preforms together when holding the preform;
To have a feeding means for receiving a predetermined number of preforms falling from the holding conveyor and sending it to the side to the holding conveyor, and to temporarily stock the preform at the sending side end of the feeding means A stock delivery stand provided with an opening and closing means, and
Loading in front of the delivery table in the delivery direction, receiving a preform delivered all at once from the delivery table when the opening / closing means is opened , and carrying it into a container disposed below the delivery table in the delivery direction forward A bucket device ,
The carrying-in bucket device has a bucket that can move in the front-rear direction and move up and down with respect to the sending-out direction of the sending-out base within the arrangement range of the container, and the bucket is seen from the front in the sending-out direction, A horizontally long bucket having a width substantially equivalent to the horizontal width in the container and capable of receiving the preform sent out from the delivery table over the entire width, and carrying the received preform into the container A preform stacking device provided so that it can be dropped and stacked over substantially the entire width . The stock-use delivery stand includes a shooter that slides the preform falling from the holding conveyor under the holding conveyor almost without collecting and dispersing, and for feeding the preform fed through the shooter. A conveyor as a means, an end on the delivery side of the conveyor has a delivery width corresponding to the horizontally long bucket, and the preform can be delivered almost uniformly over the entire width of the bucket. The preform accumulating apparatus according to claim 1, wherein the apparatus is a preform accumulating apparatus. A counter that counts the number of preforms sent from the transport conveyor to the connecting portion between the transport conveyor and the holding conveyor and transmits the count value to the control unit is provided. the preform of the integrated device according to claim 1 or 2 which is configured to separating operation of both conveyor members. The counter is composed of a turret board in which substantially semicircular recesses into which a preform is fitted on a circular outer peripheral edge are formed at equal intervals, and the preform is fed from the conveyor to the holding conveyor by the rotation of the turret board. 4. The preform stacking apparatus according to claim 3 , wherein the preform stacking apparatus is configured to count the number. The connection position of one corresponding conveyor members of the two conveyors and the connection position of the other corresponding conveyor members are shifted in the feeding direction at the connection portion of the transport conveyor and the holding conveyor. 4. The preform accumulation apparatus according to any one of items 1 to 3 .

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