JPS6152045B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention is a method for separately storing rod-like objects such as coated welding rods in a divided hopper divided into two chambers, which is used when automatically loading and packing rod-like objects into packaging boxes. Regarding. (Prior art) Generally, in the production line of coated welding rods, automation and continuousization of coating, drying, and firing processes of the coating material are being automated and continuous. In view of the fact that automation of the packaging process has been delayed, the present applicant has previously developed the Japanese Patent Application Publication No.
51-112692 was proposed. The technique will now be explained with reference to FIG. As shown in Fig. 1, the welding rods W, which have completed the sorting and inspection process and are transported by the conveyor 1 in a posture perpendicular to the transport direction and at approximately regular intervals, fall one after another at the end of the conveyor and are transported to two chambers below. The welding rods are stored, for example, in a left chamber of the divided hopper 3 which receives and accommodates the divided welding rods. The falling welding rods W are counted by a counter 2 consisting of phototubes installed near the lower end of the conveyor facing each other across the welding rod falling line, and when a predetermined number of rods have been counted, the welding rods W continue to fall by switching the switching plate 4. The welding rod is dropped and stored in the chamber on the right side of the split hopper 3. On the other hand, the welding rod group housed in the left chamber of the divided hopper 3 falls into the intermediate hopper 5 below by opening its bottom. Next, when a predetermined number of welding rods have been stored in the same manner and the welding rods fall from the right chamber of the divided hopper 3 and the required packaging quantity is reached, an alignment cylinder is activated to align the rods (not shown). After advancing the plate and aligning the ends of the welding rods W in the intermediate hopper 5, the packaging box 1 is
At the same time, the box pedestal 8 on which 0 is placed rises to the position shown by the solid line in FIG. Drop it into the box 10. Next, as soon as the welding rod W is transferred into the packaging box 10, the cylinder 9 is actuated to lower the box holder 8 to a predetermined position (the chain line position in Figure 1), and then the box carrying cylinder 12 is moved and the box The packaging box 10 on the pedestal 8 is pushed out onto the box carrying roller table 11 and sent to the next sealing process. The counter 2 described above uses a phototube and counts the number of welding rods by interrupting the luminous flux connecting the emitter and receiver with the falling welding rod, but it is of course possible to use other counting mechanisms. Also split hopper 3
As shown in the figure, the chamber is divided into two chambers by an intermediate wall, the bottom of each chamber can be opened and closed, and a switching plate 4 is provided at the upper part of the intermediate wall. Note that the counter 2 and the driving part of the switching plate 4 are linked, and when the counter 2 counts a predetermined number of welding rods and a predetermined number of welding rods fall into one chamber of the split hopper 3, the switching plate 4 switches. The welding rod is dropped into the other chamber. The technology described in Japanese Patent Application Laid-Open No. 51-112692 allows for efficiency and labor savings in large-capacity packaging, and also because it continuously processes welding rods that are continuously transferred from the previous process. , it is possible to directly connect with the previous process and improve the workability of the entire production line. Direct connection with this pre-process is mainly made by a conveyor. In other words, the coated welding rods that have undergone the drying or firing process, sorting, and inspection process are placed on a conveyor, which is a conveyance mechanism, at approximately regular intervals in a posture perpendicular to the conveyance direction, and are continuously conveyed from the end of the conveyor. They fall one after another, pass through a counting section such as a phototube, and then are divided and stored in either the left or right chamber of the dividing hopper by a switching plate. (Problems to be Solved by the Invention) As the number of coated welding rods produced per unit time increases due to advances in welding rod coating machines, etc., the intervals between welding rods placed and transferred by a conveyor have naturally increased. In other words, the distance between the welding rods falling from the end of the conveyor becomes narrower, causing a problem in the sorting accuracy of the switching plate that switches according to the signal from the counter that counts a predetermined number of rods, and the number of rods that are accommodated is not divided into the predetermined number. In addition to this, problems such as the falling state of the welding rod becoming irregular and the coating material of the welding rod being damaged have started to occur. The present invention solves the problems of the prior art, and aims to improve the processing capacity for dividing and storing falling rod-shaped objects without reducing the sorting accuracy of the switching plate even when the number of pieces produced increases. shall be. (Means for Solving the Problems) The present invention detects the falling direction of rod-like objects that are transported by a transport conveyor mechanism in a posture perpendicular to the transport direction and that fall sequentially from the end of the conveyor every predetermined number of rods by a signal from a counter. When dividing and storing the rod-like object into the dividing hopper through the rod-like object turning mechanism,
The conveyance speed of the conveyor mechanism is switched between two high and low stages according to the signal from the counter, and when the rod-like object turning mechanism is operated in the electric direction, the interval between the rod-like objects is made larger than when the turning operation is not performed. This is a method for dividing and storing stick-like objects, which is characterized by dropping them. (Function) The present invention is a method for improving the throughput of a conventional rod-shaped object turning mechanism, such as a counter and a switching plate that receives a signal from the counter in a drive section and switches the turning mechanism, without improving it. It is characterized by the way the rod-like objects fall to the bottom, and the rod-like object conveying mechanism works in conjunction with the rod-like object turning mechanism to change the conveyance speed. When the distance between objects is narrowed and the objects fall, the switching plate switches and the falling direction of the falling sticks is reversed, that is, when the counter counts a predetermined number of objects, the distance between the falling sticks is increased and the sorting accuracy by the switching plate is degraded. A predetermined number of rod-shaped objects are divided and housed in a container such as a hopper installed below a turning mechanism without turning the turning mechanism. (Example) The following is a second example of an apparatus based on the method of the present invention.
This will be explained with reference to Figure a and Figure b, which is a front view thereof.
In addition, the case where a covered welding rod is divided and accommodated as a rod-shaped object will be explained as an example. The first conveyor 13 is a conveyor that continuously conveys the welding rods that have been sorted through a drying or firing process and has undergone an inspection process at approximately regular intervals in a posture perpendicular to the conveyance direction. The end pulleys 14, 14' are supported by a shaft 15, which in turn is supported by bearings 16, 16'. The second conveyor 13' is also rotated by pulleys 17, 17' and 18, 18'. The pulleys 17, 17' are supported by shafts 15 of pulleys 14, 14' of the first conveyor 13, and the pulleys 18, 18' are supported by shafts 19, which are supported by bearings 20, 20'. be done. The shaft 15 is a drive shaft of the first conveyor 13, and is rotated by a motor 21 with a reduction gear to drive the pulleys 14, 14'. The driving force from the motor 21 is transmitted to the clutch mechanism 2 via the chain 22.
3 and 23', and the receiving shaft 15 is rotated by a sprocket 25 provided on the shaft 15 via a chain 24 with the clutch mechanism 23 as a relay, or the chain 2 is connected with the clutch mechanism 23' as a relay.
Sprocket 2 provided on shaft 15 via 4'
5' to rotate the receiving shaft 15. In this way, the first conveyor 13 is connected to the clutch mechanism 23, 2.
3', the conveyor speed can be switched between high and low speeds, and the switching is performed by a signal from a counter of the rod-shaped object turning mechanism. In addition, the second conveyor 13' is driven by using the driving force from the motor 26 with a speed reducer through the chain 27.
The conveyor belt is rotated using the shaft 19 as a drive shaft. In addition, pulley 17,1
7 has a built-in bearing and is supported by a shaft 15. To explain the speed relationship between the speed V ₁ of the first conveyor 13 and the speed V ₂ of the second conveyor 13', conventionally, both V ₁ and V ₂ are constant speeds and V ₂ > V ₁ . I was adjusting. In other words, the welding rods W, which are conveyed at a certain interval on the first conveyor 13 driven at a speed of _V1 , are
Second conveyor 13' driven by V ₂ (>V ₁ )
By shifting to , the spacing between the welding rods was further widened to facilitate distribution when the welding rod turning mechanism counted a predetermined number of rods. On the other hand, in the present invention, the interval between falling welding rods only needs to be enough to be counted by the counter of the welding rod turning mechanism under normal conditions, and when sorting by switching the switching plate, this sorting accuracy is required. Based on the idea that a sufficient distance is required to prevent deterioration, the second conveyor 13'
The speed V ₂ of the first conveyor ₁₃ is kept constant, and the speed V ₁ of the first conveyor 13 is usually equal to or slightly slower than V ₂ to narrow the interval ₂ between the welding rods on the second conveyor 13' as much as possible. to improve processing efficiency. Also, when sorting by the switching plate, the first conveyor 13
By making the speed V ₁ ′ lower than the normal speed V ₁ , the interval ₂ ′ between the welding rods on the second conveyor 13 ′ is made larger than the normal interval ₂ , that is, the welding rods fall from the end of the conveyor. Sorting accuracy is improved by widening the interval between welding rods W. 1st above
transport conveyor 13 and second transport conveyor 13'
Examples of speeds and bar spacings are shown in Table 1.

[Table] Next, the operation of the apparatus based on the method of the present invention will be explained. As already mentioned, the speed switching between the two high and low stages of the first conveyor 13 is performed by the clutch mechanism 23, which switches the signal from the counter 2 in conjunction with the counter.
This is done by receiving 23'. for example,
In addition to storing 100 welding rods separately based on the speed and spacing shown in Table 1, the first
transport conveyor 13 and second transport conveyor 13'
If there are 30 welding rods between the transition position (that is, the position directly above the shaft 15) and the position of the counter 2, when the counter 2 counts the 65th welding rod, the transition from the normal time to the distribution time will occur. The setting may be made so that the speed switching signal from the distribution time to the normal time is output when the 85th time is counted. In this case, the first conveyor 13 is normally driven by the clutch mechanism 23, and the other clutch mechanism 23' is driven at the time of sorting.
It is assumed that the first conveyor 1 is driven by the following. The operation in the above case will be explained in detail below. The welding rods W are transferred at intervals _{of 1 in} a posture perpendicular to the transfer direction by the first transfer conveyor 13 which receives the driving force of the motor 21 via the clutch mechanism 23 and the chain 24 and is driven at a speed V1. The second transport conveyor 13' is then driven at a speed _V2 . The transferred welding rods are transferred while maintaining the interval ₂ , fall sequentially from the end of the conveyor, are counted by the counter 2, and divided by the switching plate 4 into the hopper 3.
For example, it is accommodated in the left ventricle. When the counter counts up to 65, that is, the 95th welding rod is the first welding rod.
from the conveyor 13 to the second conveyor 1
3', a signal is sent from the counter 2 to the clutch mechanisms 23 and 23' to switch the driving force transmission path from the clutch mechanism 23 to the driving force transmission path through the clutch mechanism 23'. The first transport conveyor 13 starts driving at a speed V ₁ ' lower than the speed V ₁ . In this way, the 95th welding rod W is transferred from the first transfer conveyor 13 to the second transfer conveyor 13', and the first transfer conveyor 13 continues at the speed V ₁ ′ until the 105th welding rod finishes its transfer. When the 105th welding rod is moved, that is, the counter 2 is
When the 85th welding rod is counted, the clutch mechanisms 23 and 23' are switched again to transmit the driving force from the motor 21 via the clutch mechanism 23, and the speed of the first conveyor 13 is set to _V1. . The intervals between the 95th to 105th welding rods transferred to the second conveyor 13' are widened, and the welding rods are transferred at an interval of ₂ '(> ₂ ) and sequentially fall from the end of the conveyor. In other words, the counter counts from 95 to the predetermined number of 100, and then 105.
Until the welding rods are counted, the intervals between the falling welding rods are larger than normal, and when the counter counts the predetermined number of 100 welding rods, the falling direction of the 100th and subsequent welding rods is reversed and the split hopper 3 The switching plates that are switched to accommodate the right ventricle can be easily sorted. Thereafter, the same operation is repeated every predetermined number of 100 pieces. Note that the numerical values in the above embodiments are merely examples, and may be appropriately determined according to the usage conditions. Note that in the above embodiment, the first conveyor, the second
In a transport conveyor mechanism consisting of a transport conveyor, the transport speed of the first transport conveyor is slowed down in advance when the rod-like objects are diverted, that is, when they are distributed by the switching plate, thereby widening the interval between the rod-like objects that fall from the end of the conveyor. As an example, the speed of the second transport conveyor (final conveyor) may be operated in two stages, high and low, and in this case, the time of sorting by the switching plate is the time of switching the conveyor speed from high to low. . (Effects of the Invention) According to the divided storage method for rod-shaped objects of the present invention configured as described above, the interval between the rod-shaped objects falling from the end of the conveyor becomes larger than in normal times during the switching operation, so that the unit time is reduced. Even if the number of rods per processing increases, the distribution accuracy is good, and the rod-like objects are divided and stored in the dividing hopper as a predetermined number. Furthermore, since the falling state of the rod-like object is not disturbed, problems such as damage to the coating material of the welding rod, which are conventional, do not occur. That is, during mass production of rod-shaped objects, highly accurate division and storage processing is possible without causing any disturbance to the rod-shaped objects.

[Brief explanation of the drawing]

Figure 1 is a diagram showing an example of the use of the rod-shaped object turning mechanism.
FIG. 2 is a diagram showing an example of an apparatus based on the method of the present invention, in which a is a plan view and b is a front view. 2...Counter, 3...Divided hopper, 4...Switching plate,
13...First conveyor, 13'...Second conveyor, 21, 26...Motor with speed reducer, 2
3, 23'...Clutch mechanism, W...Welding rod.

Claims (1)

[Claims] 1. The sticks are transported by the conveyor mechanism in a posture perpendicular to the transfer direction and are sequentially dropped from the end of the conveyor.The sticks are then divided into hoppers through a stick turning mechanism that changes the falling direction of the sticks falling sequentially from the end of the conveyor every predetermined number of sticks based on a signal from a counter. When storing the rod-like objects separately in the interior, the conveyor speed of the conveyor mechanism is switched between two high and low stages according to the signal from the counter, and when the rod-like object turning mechanism is in the turning operation, the interval between the rod-like objects is adjusted at the time of the turning operation. A method for storing stick-like objects in a divided manner, characterized by dropping them in a larger size than in other cases.