JPH0747414B2 - Component input device for continuous heat treatment furnace - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention sequentially moves a plurality of storage hoppers storing a large amount of parts to a position facing an input port of a continuous heat treatment furnace so that the parts are continuously connected to the input port of the continuous heat treatment furnace. The present invention relates to a component loading device configured to be able to supply.

[0002]

2. Description of the Related Art Recently, when heat treating parts such as screws and washers, many continuous heat treating furnaces have been used which are fully automated so that the number of workers can be reduced. This continuous heat treatment furnace generally has a mesh belt that extends horizontally and circulates and moves at a constant speed, and one end of the mesh belt is exposed to the outside to form a component inlet. In this continuous heat treatment furnace, when the parts are supplied to the charging port, it is necessary to keep the supply amount substantially constant in order to make the quality uniform. Therefore, the component charging device 3 shown in FIG. 3 is arranged in the continuous heat treatment furnace. The component loading device 3 has a machine frame 3a extending in an upright direction, and in the machine frame 3a, endless chains 3b that are circulated and moved by the rotation of a motor (not shown) are arranged on both sides thereof. . Moreover, a case holder 3d for holding a storage case 3c in which parts (not shown) are stored is connected to the two endless chains 3b, and the case holder 3d is moved as the endless chain 3b moves. Is raised and reaches the highest position, the storage case 3c is inverted and the components in the storage case 3c are discharged onto the supply hopper 3e. Further, below the supply hopper 3e, there is arranged a linear feeder 3f having a conveying chute that extends horizontally at a predetermined distance, and is configured to separate parts into fixed amounts and supply them in the horizontal direction. There is. Further, the conveying chute of the straight-moving feeder 3f extends to above the parts cleaning device 3g, a part of which is located at the charging port 1b of the continuous heat-treating furnace 1, and the parts supplied from the straight-moving feeder 3f in a constant amount are continuously heat-treated. It is configured to be supplied to the charging port 1b of the furnace 1.

[0003]

According to the component feeding device 3 of the continuous heat treatment furnace 1, the operator pushes the storage case 3c storing the components into the case holder 3d to move the endless chain 3b in a circulating manner. Or case holder 3
It is necessary to remove the empty storage case 3c from d, which requires an operator to perform this kind of simple work, which hinders the rationalization of the work. There is a demand for a component feeding device.

The present invention has been invented in view of the above demands, and is a component charging device for sequentially moving a plurality of storage hoppers storing a large number of components to a charging port of a continuous heat treatment furnace to supply the components without interruption. Is to provide.

[0005]

[Means for Solving the Problems] A locking base is arranged so as to receive a storage hopper which is lowered from above and approaches the charging port of a continuous heat treatment furnace. An endless belt extending obliquely is arranged so as to move circularly. A magnetic material is attached to the endless belt, and the magnetic material is configured to move in a direction in which the magnetic material rises and inclines when it is on the upper surface side of the endless belt.

On the other hand, chain guides are arranged so as to be upright at a predetermined distance from the locking base, and each of the chain guides receives rotation of a forward / reverse rotation drive source along the extending direction thereof. A chain that rotates forward and backward is arranged. A hanger portion is attached to each of the chains at substantially the same height, and the hanger portion is moved up from the lower position to the highest position by the operation of the forward / reverse rotation drive source, and further, It is configured to descend until the storage hopper that is locked to the contact table comes into contact with the locking base.

Further, there is arranged a rotary table which approaches the chain guide and rotates by a predetermined rotation angle.
A plurality of storage hoppers each having an engaged portion that can be positioned on the movement path of the hanger portion are arranged on the outer peripheral portion of the rotary table. The storage hopper is made of a non-magnetic material, and the bottom surface thereof is composed of an inclined surface that is inclined upward toward the input port and a guide surface that is inclined downward to reach above the input port.

[0008]

In the above component feeding apparatus, a plurality of storage hoppers in which a large amount of components are stored are arranged on the outer peripheral portion of the rotary table, and the rotary table is rotated by a predetermined rotation angle to continuously heat treat one of the storage hoppers. Position it facing the furnace inlet.
In this state, when the forward / reverse rotation drive source is operated to raise the chain, the hanger portion integrated with the chain is raised and engages with the engaged portion of the storage hopper located on the moving path thereof. Therefore, the storage hopper rises to the highest position as the chain rises, then descends, and its bottom surface comes into contact with the locking base and stops. At this time, the inclined surface forming the bottom surface of the storage hopper is located along the endless belt, and the magnetic body attached to the endless belt moves upward toward the insertion port as the endless belt circulates. Therefore, due to the magnetic force of the magnetic body, the components inside the storage hopper rise along the inclined surface and reach the guide surface of the storage hopper. After that, as the endless belt moves on the return path side, the magnetic material also separates from the bottom of the storage hopper, but the parts located on the guide surface spontaneously fall due to their own weight, and a substantially constant amount enters the inlet of the continuous heat treatment furnace. Supplied with each.

When all the parts are discharged from the storage hopper to the charging port of the continuous heat treatment furnace, the chain is returned by the return movement of the forward / reverse rotation drive source, and the storage hopper is raised to the highest position and then lowered. When the storage hopper reaches the lower position, the storage hopper is placed on the outer peripheral portion of the rotary table. further,
The forward / reverse rotation drive source further moves back and stops at a position where the hanger portion integrated with the chain separates from the engaged portion of the storage hopper.

Thereafter, the rotary table is rotated by a predetermined rotation angle so that the adjacent storage hopper is located facing the input port, and the components stored in this are also supplied to the input port. By repeating this operation, the components in the plurality of storage hoppers arranged on the rotary table are quickly and uninterruptedly supplied to the continuous heat treatment furnace, so that the component loading operation can be completely unmanned.

[0011]

Embodiments Embodiments will be described below with reference to the drawings. 1 and 2, reference numeral 1 denotes a continuous heat treatment furnace for heat-treating steel parts such as screws, rivets, washers, etc., which has a transport mesh belt 1a extending horizontally in the furnace and circulatingly moving. ing. This transport mesh belt 1
One end of a is exposed to the outside, and a loading port 1b into which the component 2 is loaded is configured. Facing this inlet 1b,
A component loading device 3 that supplies the components 2 in fixed amounts is arranged. The component loading device 3 is disposed close to the loading port 1b, an elevator device 6 that conveys a storage hopper 5 described later up to the locking platform 4 and the locking platform 4, and an elevator device 6 that is close to the elevator device 6. It is composed of a rotary table 7 and a rotary table 7. The locking table 4 has an inclined plate 4a made of stainless steel, which is an example of a non-magnetic material, and is arranged so as to close the movement path of the storage hopper 5 and receive it. The guide path is constructed so as to be inclined upward as it goes toward, reaches one side above the input port 1b, and is inclined downward from that position. The thickness of the inclined plate 4a is set to a dimension necessary for transmitting the magnetic force of the magnet plate 8 described later to the component 2 in the storage hopper 5 even if the bottom of the storage hopper 5 described later overlaps. Further, an endless belt 9 extending along the inclined plate 4a is arranged below the inclined plate 4a, and is configured to be circulated by being rotated by a motor (not shown). A magnet plate 8 which is an example of a magnetic material is attached to the endless belt 9 so as to intersect the direction in which the endless belt 9 extends and at a predetermined interval, and the magnet plate 8 is inclined by the circular movement of the endless belt 9. It is configured to move in an ascending direction along the plate 4a.

The elevator device 6 has a pair of chain guides 6a which stand upright at a distance which does not hinder the storage hopper 5 from moving close to the locking base 4, and each chain guide 6a has a pair of chain guides 6a. A chain 10 is arranged along the extending direction of the chain 10 to rotate in the normal and reverse directions by the rotation of a forward and reverse rotation drive source (not shown). The chain 10 is guided by the sprocket mechanism 10a so as to move horizontally on the upper and lower sides thereof, and on the upper side thereof, the storage hopper 5.
Is moved to a position above the locking base 4, and a hanger portion 10b, which will be described below, is moved to a position where it can be engaged with the engaged portion 5a of the storage hopper 5 on the lower side thereof. Further, a hanger portion 10b is attached to each of the chains 10 at substantially the same height,
The hanger portion 10b is configured to move to a position above the storage hopper 5 and engage with the engaged portion 5a to transfer the storage hopper 5.

Further, a polygonal rotary table 7 which is located near the chain guide 6a and a part of which is positioned below the chain 10 is arranged so as to rotate at a predetermined rotation angle. Cross section is approximately V
A letter-shaped storage space is formed, and a plurality of storage hoppers 5 each having an engaged portion 5a that can be positioned on the movement path of the hanger portion 10b are arranged in each storage space. The storage hopper 5 is made of stainless steel, which is an example of a non-magnetic material, and its upper part is open. In addition, the bottom surface of the storage hopper 5 can be placed on the rotary table 7 and the inclined plate 4a.
It is composed of an inclined surface 5b extending along the above and a guide surface 5c which reaches the upper side of the inlet 1b and inclines downward. The inclination angle of the inclined surface 5b is configured to be relatively small so that there is no hindrance when the component 2 moves up. Further, the storage hopper 5 has an inclined back surface 5d continuous with the inclined surface 5b, and is configured to store the component 2 in a space having a substantially V-shaped vertical section formed together with the inclined surface 5b. . The wall pressure of the inclined surface 5b is formed sufficiently thin so that the magnetic force of the magnet plate 8 has a sufficient force to pull the component 2 in the storage hopper 5, and the component 2 moves as the magnet plate 8 moves. Is formed in a band shape and is configured to move along the inclined surface 5b.

In the above component loading device, a plurality of storage hoppers 5 in which a large number of components 2 are stored are placed on a rotary table 7, and the rotary table 7 is rotated by a predetermined rotation angle, one of which is an elevator device. 6 below the chain 10. In this state, the forward / reverse rotation drive source is operated to move the chain 10 forward by a predetermined distance. By the forward movement of the chain 10, the hanger portion 10b integral with the chain 10 horizontally moves to reach below the engaged portion 5a of the storage hopper 5 and then rises. Therefore, the hanger portion 10b lifts the storage hopper 5 and transfers it upward. When the storage hopper 5 reaches the highest position, it moves in the horizontal direction and reaches above the inclined plate 4a of the locking base 4. After that, as the hanger portion 10b reaches the return path side of the chain 10, the storage hopper 5 descends, and the forward / reverse rotation drive source stops at the position where the bottom surface of the storage hopper 5 contacts the inclined plate 4a. After that, when the endless belt 9 located below the locking base 4 moves circularly by the operation of the motor,
The magnet plate 8 attached to this moves along the inclined plate 4a of the locking base 4 in a rising direction. Therefore, due to the magnetic force of the magnet plate 8, the component 2 in the storage hopper 5 located in contact with the bottom surface of the inclined plate 4a becomes a strip extending in the direction intersecting with the moving direction and rises along the inclined surface 5b. The guide surface 5c located above the charging port 1b of the continuous heat treatment furnace 1 is reached. Each magnet plate 8 reaches the highest position and moves with the rear endless belt 9 on the return path side to separate from the inclined plate 4a, but the component 2 pulled by the magnet plate 8 is inclined downward toward the tip. Since it reaches the surface 5c, it is naturally dropped along the guide surface 5c due to its own weight and is supplied to the charging port 1b of the continuous heat treatment furnace 1 in a substantially constant amount.

When all the components 2 are discharged from the storage hopper 5, a detection sensor (not shown) detects this, and the forward / reverse rotation drive source is returned, and the hanger portion 10b attached to the chain 10 is detected. To the original position. At this time,
When the hanger portion 10b is returned to the lower side, the storage hopper 5 locked by the hanger portion 10b is placed on the rotary table 7.

Thereafter, the rotary table 7 is rotated by a predetermined rotation angle, and the adjacent storage hopper 5 is positioned so as to face the elevator device 6. At the same time, the chain 10 moves forward and the discharging operation of the component 2 is repeated, so that the component 2 in the storage hopper 5 placed on the rotary table 7 is rapidly and continuously supplied to the continuous heat treatment furnace 1 in a substantially constant amount. To be done. Moreover, if a supply device (not shown) for supplying a predetermined amount of the component 2 is connected to any of the storage hoppers 5 from which the component 2 has been discharged, no worker is required for the component loading work. ,
This type of work can be completely unmanned.

[0017]

As described above, according to the present invention, a plurality of storage hoppers storing a large number of stored components are sequentially moved to the inlet of the continuous heat treatment furnace so that the components can be supplied without interruption. Therefore, a worker is not required for the component loading work, and this type of work can be completely unmanned.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part showing a state in which a component loading device of the present invention is rotated by 90 degrees.

FIG. 2 is an enlarged sectional view of a main part of the storage hopper according to the present invention.

FIG. 3 is a schematic explanatory view showing a state in which the conventional component insertion device is rotated 90 degrees.

[Explanation of symbols]

 1 Continuous Heat Treatment Furnaces 1a Conveying Mesh Belt 1b Input Port 2 Parts 3 Parts Input Device 3a Machine Frame 3b Endless Chain 3c Storage Case 3d Case Holder 3e Supply Hopper 3f Straight Feeder 3g Parts Cleaning Device 4 Locking Table 4a Inclined Plate 5 Storage Hopper 5a Engagement part 5b Inclined surface 5c Guide surface 5d Inclined back surface 6 Elevator device 6a Chain guide 7 Rotary table 8 Magnet plate 9 Endless belt 10 Chain 10a Sprocket mechanism 10b Hanger part

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location C21D 1/00 117

Claims (1)

[Claims] 1. A locking base is arranged so as to receive a storage hopper that is lowered from above, approaching an input port of a continuous heat treatment furnace,
An endless belt extending obliquely above the input port is arranged on the locking base so as to circulate, a magnetic body is attached to the endless belt, and the magnetic body is inclined upward when it is on the upper surface side of the endless belt. While configured to move in the direction,
Chain guides that stand upright at a predetermined interval are arranged close to this locking base, and chains that rotate forward and backward in response to the rotation of the forward-reverse rotation drive source are arranged along the extending direction of each chain guide. Attaching the hanger parts to the chains on both sides at approximately the same height, raising the hanger parts from the lower position by the operation of the forward / reverse rotation drive source, moving them to the highest position, and locking them afterward. It is configured to be lowered to a table, and further, a rotary table which rotates close to the chain guide and rotates at a predetermined rotation angle is arranged, and the outer peripheral portion of the rotary table is engaged with and can be positioned in the movement path of the hanger portion. A plurality of storage hoppers each having a section are placed, the storage hopper is made of a non-magnetic material, and the bottom surface of the storage hopper rises and slopes toward the inlet of the continuous heat treatment furnace. Continuous heat treatment furnace parts dosing device, characterized by being configured and a guide surface inclined downward to reach toward.