JPS59111243A - Method for separate supply of bulb bases - Google Patents

Abstract

PURPOSE:To enable separate supply of bases to be performed readily and quickly, by partly undoing support of a base by one belt of a pair of conveyor belts and partly shielding pressure air blown against a base. CONSTITUTION:When a base f is to be isolated from the conveyor 2 at the position B and supplied to the base feeder 7, the shaft 66 is rotated and the shielding plate 67 partly shields the nozzle 62. A portion of the air blown from the nozzle 62 is blown against the upper surface of the portion of the base f which is not supported by the conveyor belt 23, whereby the base f is dropped on the base feeder 7. When a base f is to be supplied to the base feeder 7a at the position C, the shutter 65 of the base separating mechanism 6 is not actuated, whereby the air blown from the nozzle 62 holds the base f so as not to be dropped from the conveyor belt, but the shutter 65 of the separating mechanism 65 is actuated, whereby the base f which arrived at the position C is dropped on the base feeder 7a.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for separating and supplying caps, which selectively separates and supplies caps that are continuously transported by a conveyor.

In the manufacturing process of fluorescent lamps, when a cap to be attached to the end of a fluorescent lamp tube is fed to the cap installation position, conventionally, a chute is used to allow the cap to fall by gravity while regulating the direction of the cap pin with a parallel groove. Transfer supply method or practical method
As shown in No. 6-104049, a pair of endless belts arranged parallel to each other is conveyed to a predetermined position with a base pin inserted into the gap 1 formed between the endless belts. The most common method was to remove the

However, as described above, the method of taking out pieces one by one from a chute or conveyor using a separate take-out mechanism has a limit in the supply capacity of the nozzles.

The present invention has been made in view of such conventional problems, and uses air pressure to move the caps onto the conveyor belt without temporarily stopping the caps being transferred on the conveyor belt by mechanical operation (for example, a shutter mechanism). The object of the present invention is to provide a method that allows simple and quick separation and supply by selectively dropping the material from a belt.

The method for separately feeding tube caps according to the present invention is to partially transfer the conveying surface of one conveyor belt from a conveying surface of a pair of conveyor belts that are arranged in parallel to each other and move at the same speed so that the conveying surface of the other conveyor belt is separated from the conveying surface of the other conveyor belt. An air injection nozzle is provided near the conveyor belt to blow air toward the conveying surface of the other conveyor belt, and with the mouthpiece inserted between the conveyor belts, the mouthpiece is placed on the conveyor belt. The present invention is characterized in that when the nozzles to be transported and separated reach the lowered portion of the conveying surface, the air blowing is at least partially cut off or stopped to allow the nozzles to fall from the conveyor belt.

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

1 and 2, there is shown an apparatus 1 capable of carrying out the method for separating and supplying tube caps according to the present invention.

This ifl includes a belt-type conveyor 2, a defective product separation mechanism 4 that is provided in the middle of the conveyor 2 and separates and removes defective product caps, and a slot cap separation mechanism 6, 6a that implements the separation and supply method according to the present invention. It is configured with

The conveyor 2 includes a pair of endless conveyor belts 23 and 24 that are arranged in parallel with each other and are moved in the same direction (1) at the same speed by a common belt pulley 22 that is rotated by a motor 21. The belt 24 is
Multiple m locations A, B, and C along the way (6 locations in this example)
As shown in FIGS. 2 and 3, the upper surface, that is, the conveying surface of each pair of idle belt rollers 25 and 26 VC is lower than the conveying surface of the other conveyor belt 2, h, and in this part, The conveyor belt 24 does not support the nozzles to be conveyed. At both ends of the locations A, B, and C where the conveyance surface of the conveyor belt 24 is lowered, there are a pair of guide plates 27 and 28 whose upper surfaces are approximately flush with the conveyance surface of the conveyor belt 2.
is provided. Guide plates 27 and 28 are conveyor 2) 7
1/-m 20.

In the above conveyor, a pair of conveyor belts 2-6
The cap f is placed on the right end of the pair of conveyor belts (in FIGS. 1 and 2) by inserting the cap pins (usually there is a pair) P into the gap 29 formed between the conveyor belts and 24. Then, the pair of conveyor bells 23 and 24 are moved around in the direction of the arrow X to continuously transport the nozzle f in the same direction.

The defective product separation mechanism 4 has guide plates 27 at both ends at position A.
．． 28, an upper guide rail 42 disposed at a position corresponding to position A directly above the conveyor belt 26, and an air injection pipe disposed adjacent to and parallel to the upper guide rail. 4, as shown in detail in FIG. 4, a large number of injection nozzles 44 (which may be slit-shaped) for extruding the nozzle are attached to the air injection pipe 46 at predetermined intervals, and approximately It has a spray nozzle 45 for removing the cap attached to the center.

As shown in FIG. 5, the gap w1 between the lower guide rail 41 and the side edge of the conveyor belt 26 is the gap w2 between the two conveyor belts 26 and 24 (w2 is a gap in which the base pin P can be inserted loosely). It is larger than the gap of about -It is designed to be able to skid sideways.

In addition, the gap w3 (measured in the horizontal direction) between the upper guide rail 42 and the lower guide rail 41 is such that the cap f slides sideways until the cap pin p comes into contact with the lower guide rail 41, as shown in FIG. 6 (CA). Moreover, when the cap is rotated around one cap pin P as shown in Fig. 6 (CB) (this happens in the case of a defective product with only one cap pin attached to the cap). It is determined that the cap f comes off from the upper guide rail 42 at the same time.

As shown in detail in FIG.
It is installed diagonally downward toward the 1st side. Also,
The tip of the separation/removal injection nozzle 45 has a base f as shown in FIG.
When moved to the positions shown in FIG. 6C] and FIG. 6B, it is oriented downward at a position where air can be injected onto the upper surface of the end opposite to the upper guide rail 42 side of the cap.

In this defective product separation mechanism, when the device 1 is operating, pressurized air is constantly supplied to the air injection pipe 46 from an air pressure source (not shown), and air is constantly injected from the injection nozzles 44 and 45. . Under such conditions, when the mouthpiece f rides on the conveyor belts 2 and 24 and is sent to position A, the mouthpiece is first moved laterally (leftward in FIG. 5) by the air blown out from the injection nozzle 44. ) K skids sideways. At this time, when the two cap pins p are attached to the cap, the cap is in a state where the two caps are still in contact with the lower guide rail 41 as shown in FIG. 5 [B] and FIG. 6 CAj. The right end of the cap (in FIG. 6) is still under the upper guide rail 42 because the skidding stops at this point. Therefore, air is not blown from the injection nozzle 45 onto the upper surface of the left end of the mouthpiece, and even if air is blown onto the upper surface of the left end of the mouthpiece, the conveyor belt 2
6 and the lower guide rail 42. Therefore, the mouthpiece is connected to the downstream side (by the conveyor bell) 23.
Sent by On the other hand, when only one cap pin p is attached, the cap slides sideways to the left (in FIGS. 5 and 6) and rotates around the cap pin. The result is as shown in Figure [B]. Therefore, the right end of the cap f comes off from under the upper guide rail 42, and the upper guide rail no longer prevents rotation. Therefore, when the air from the injection nozzle 45 hits the right end of the mouthpiece, the mouthpiece is also affected by the air jetted from the injection nozzle 44, as shown in FIG.
), it rotates, falls off the conveyor, and is separated and removed.

It should be noted that a cap with no cap pins attached at all will slide sideways and fall from the conveyor 2 as it is. In addition, although the injection nozzle 45 is useful for quickly removing the cap, the injection nozzle 4
It is not necessarily necessary if it can be removed by injection from No. 4.

The cap separation mechanism 6 for carrying out the method of the invention is shown in FIGS.
An air injection pipe 61 extending parallel to the conveyor belt disposed on the upper side of the conveyor belt 4 (on the side opposite to the conveyor bell 23), an injection nozzle 62 attached to the air injection pipe, and a shutter 65 are provided.

In this embodiment, the jet 72'nil 62 is of an elongated shape extending over the entire length of the air jet tube 61, as shown in FIG. Inner recess of the cap on 23 (conveyor belt 2
3 side) to prevent the caps from falling from the conveyor belt 26. shutter 65
consists of a shaft 66 rotatably supported parallel to the air injection tube 61 by suitable bearings (not shown), and a shielding plate 67 fixed to the shaft 66.

The structure of the cap separation mechanism 6a is exactly the same as that of the cap separation mechanism 6, except that it is provided at a position C on the conveyor.

Therefore, detailed description of the structure will be omitted.

In the above-mentioned cap separation mechanism, the conveyor 2 at position B
When the nozzle f is separated from above and fed to the nozzle feeder 7 (detailed explanation of the structure is omitted), the shaft is rotated and the shielding plate 67 is connected to the injection nozzle 62 as shown by the chain line in FIG. Partially block the front of. For this reason, a part of the air injected from the injection nozzle 62 is blown onto the upper surface of the part of the nozzle f that is not supported by the conveyor belt (on the left side in FIG. 8), so that the nozzle f falls onto the nozzle feeder 7. .

On the other hand, when feeding the nozzle onto the nozzle feeder 7a at position C, the shutter 65 of the nozzle separating mechanism B is not operated, and therefore the air injected from the injection nozzle 62 presses the nozzle f to prevent it from falling off the conveyor belt. However, the shutter 65 of the cap separation mechanism 6a operates as described above,
The nozzle f, which has been sent to the position C'VC by the conveyor belt, is dropped onto the nozzle feeder 7a (detailed explanation of the structure is omitted). The shutter 65 is selectively activated by detecting the accumulation of caps in the cap feeder 7.7a. Therefore, when the nozzle feeder 7.7a is full, it is directly discharged from the end of the conveyor.

In addition, at positions B and C, one end of the mouthpiece f is only supported by one conveyor belt 2, and the injection air is held on the conveyor belt by force. Even if the air ejected from the nozzle 62 is completely blocked by the shutter 65, it is still possible to drop the nozzle f from the conveyor.

Next, the overall operation of the device 1 will be explained.

When the device 1 is in operation, pressurized air is supplied from a pneumatic source to the air injection pipes 42 and 61 of the defective product separation mechanism 4 and the base separation mechanism 6.6-a, and the injection nozzles 44 and 45
Pressure air is ejected from 62 and conveyor bell) 2
3.24 is continuously moved around in the direction of arrow X by the motor 21.

When the cap f is placed on the conveyor belt 23, 24 with the cap pin p entering the gap 29 between both conveyor belts, the cap 1 is transported in the direction of arrow X 1 (transferred).

And a defective cap f with only one cap pin attached.
is removed from the conveyor belt at position A as described above. On the other hand, a good cap with two cap pins is transferred beyond position A and moved to position B as necessary as described above.
or C, it is dropped onto the cap feeder 7 or Za.

The method for separating and feeding the caps according to the present invention is carried out by partially removing the support of the caps by one of the pair of conveyor belts and at least partially stopping or blocking the blowing of air pressure to the caps. And it can be done quickly.

In addition, in the separation and supply method performed by the defective product separation mechanism described in the embodiment, defective product caps having only one cap pin can be easily and automatically sorted and removed while moving the caps.

[Brief explanation of drawings]

Fig. 1 is a schematic plan view of an apparatus capable of carrying out a separate supply method for tube caps using the IC of the present invention, Fig. 2 is a side view of the apparatus shown in Fig. 1, and Fig. 3 is an apparatus shown in Fig. 1. Fig. 4 is a perspective view showing the air injection pipe and injection nozzle of the defective product separation mechanism, Fig. 5 is an enlarged vertical sectional view showing the operation of the defective product separation mechanism, and Fig. 6 is a diagram showing the arrangement of the conveyor belt. FIG. 7 is a plan view showing the operation of the defective product separation mechanism; FIG. 7 is an enlarged vertical sectional view showing the nozzle separation mechanism that implements the separation and supply method according to the present invention; and FIG. 8 is a perspective view showing the air injection pipe of the nozzle separation mechanism. It is. 2: Conveyor 23. 24: Conveyor belt 4: Defective product separation mechanism 41: Lower guide rail 42: Upper guide rail 43:
Air injection tube 44.45: Injection nozzle 6: Base separation mechanism 61: Air injection tube Patent applicant CKD Co., Ltd. Figure 7

Claims (1)

[Claims] Parallel to each other: A pair of conveyor belts that are arranged and move at the same speed, the conveying surface of one conveyor belt is partially lower than the conveying surface of the other conveyor belt, and air injection nozzles are provided near the portion. Then blow air toward the conveying surface of the other conveyor belt, and place the nozzle between the two conveyor belts (with the nozzle inserted, place the nozzle on the conveyor belt and convey it, and the nozzle to be separated by 1 A method for separating and supplying tube caps by cutting off or stopping the air blowing at least partially (() and causing the caps to fall off the conveyor belt when the air reaches the .