JPS601873Y2 - Material conveyance device in forging machine - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of a material conveying device in a forging machine.

Recently, electric forging machines have been used to manufacture engine valves, etc., and the production costs are lower than the conventional method of cutting metal materials, which involves heating and compressing one end of a round bar-shaped metal material to obtain the desired valve shape. Cheap manufacturing methods are used.

In addition, there is a strong demand for mass production of this type of valve, and some valves have been automated into integrated equipment that handles everything from transporting the material to forging.

In such a device, the materials to be processed are stored together in a tray or the like in advance, and conveyed by a chain conveyor 50 having hook-shaped locking portions 51 as shown in FIG. 8a. The materials M are transported one by one to a predetermined position to be processed while being locked in the locking portion 51.

By the way, if the material used always has a constant outer diameter, you can simply set the dimensions of the locking part to match the diameter of the material, and the locking part will allow the material to be accurately inserted one by one. It can be transported to

However, usually 8.
Various sizes are used between 3φ and 14φ.
When conveying materials with such different dimensions using the chain conveyor 50 as described above, it is necessary to design the dimensions of the locking portion 510 to match the maximum diameter of the material M. However, if the dimensions of the locking portion 51 It is designed to fit 14φ, and 8.3φ
If small-diameter materials M' such as There were cases where this caused problems.

The present invention was developed in view of these circumstances, and by providing a means to prevent transport errors in the middle of the material transport path, two or more materials can be transported while being locked to one locking part. It is an object of the present invention to provide a material conveying device for a forging machine that eliminates such inconveniences and prevents such conveyance errors, thereby allowing smooth forging processing in a forging section.

Hereinafter, one embodiment of the present invention will be specifically described with reference to FIGS. 1 to 7.

Fig. 1 shows a side view of a material conveying means, that is, a chain conveyor 1, which is incorporated in a part of the automation system of an electric forging machine, and 1a is provided in common with the forging machine main body (not shown) side. 2.2 is a pair of parallel frames erected on the substrate 1a at a predetermined angle,
Their upper ends are connected to each other via a connecting member 2a.

At the upper ends of the frames 2, 2, both frames 2,
A shaft 4 is rotatably supported by bearings 3, 3 provided in the shaft 4, and a pair of sprockets 5, 5 are fitted into the middle part of the shaft 4 with a predetermined distance between them. , 5 are fixed to the shaft 4 via screws 6, 6.

Further, a chain tensioner 7.7 is provided at the lower end of the frames 2, 2, and a shaft 8 is rotatably supported by a bearing portion 7at7a of the chain tensioner 7.7, and a pair of sprockets 9, 9 are arranged in the middle of the shaft 8 at a predetermined distance from each other. The sprockets 9 are fitted to the shaft 8 with a gap between them, and the sprockets 9 are fixed to the shaft 8 via screws 9a, 9a.

And chain 1 between the above sprockets 5, 9, 5.9
0.11 is installed, and the tension of the chains 10, 11 can be adjusted by a chain tensioner 7.7.

The chain tensioner 7 has an adjustment bolt 7c attached to the movable part 7b including the bearing part 7a, and the adjustment bolt 7c is inserted through the upright part 12 integrally provided on the frame 2. By rotating the screwed nut 13, the movable part 7b is moved vertically along the frame 2, and the tension of the chain 10.11 is applied to the nut 1.
It can be adjusted by 3.

Also, the chain 10.11 above is the chain 10.11
Connected links lea..., 11a...
Connecting links 10a and lla that exist in each certain section
A hook-shaped locking part 14 is provided on the side of the chain 10 and the locking part 14 of the chain 11 side to lock the material M. It is designed to be sequentially conveyed to the compressing machine side.

By the way, as shown in FIG. 6, the shape of the locking part 14 is designed to match the outer diameter of the material M that has a maximum diameter of 14φ, for example, to be conveyed by this device, and is designed to be a curved support that supports the material M. The portion 14a and the locking tip portion 14b continuous with the support portion 14a ensure that the material M is transported without coming off from the locking portion 14 during transportation.

Further, a tray 15 is provided as a receptacle for storing the material M on one side of the frames 2, 2.
The chains 10 and 11 move upward through the chain 10 and 11, and are engaged with the respective engagement portions 14, 14 of the chains 10 and 11 to be conveyed upward in sequence.

A conveyance error prevention means 17 is provided on the starting end side of the conveyance path of the material M.

As shown in FIGS. 6 and 7, this transportation error prevention means 17 is extremely simple, with a coil spring 19 erected on a substrate 18, and a tube 20 made of synthetic resin attached to the tip of the coil spring 19. At the same time, the entire coil spring 19 is squeezed to curve and deform in a certain direction.

Then, the board 18 is fixed to the bottom plate 15a of the plate 15 near the frame 2 via bolts 21, 21, and the tips of the coil springs 19 are locked to the locking parts 14, 14 of the chains 10, 11. The material M is brought into elastic contact with the material M conveyed upward, and the material M is held in a predetermined direction, that is, as shown in FIG. He is trying to press with an appropriate pressing force in the direction to release from the locking part 14 (arrow α direction).

The chain 10.11 is driven by a cylinder 22 provided on the side surface of the frame 2, and a rack 23 is attached to the tip of the rod 22a.
A spur gear 24 is meshed with the spur gear 2 to convert the forward and backward movement of the rod 22a into a reciprocating rotational movement of the spur gear 24.
4 is connected to the shaft 4 via a one-way clutch 25, and the sprocket 5.5 is rotationally driven in a constant direction by a predetermined angle by the forward and backward movement of the rod 22a.

In addition, a second chain conveyor 2 is installed on the upper end side of the frame 2.
6 is provided, and the material M conveyed by the chain conveyor 1
is conveyed to a forging machine section (not shown) provided on the rear side of the page shown in FIG.

27 is a guide plate for guiding the material M conveyed by the chain conveyor 1 to be placed at a predetermined position on the second chain conveyor 26; It is disposed at a low position, and the other end is disposed at a predetermined position adjacent to the chain 26a.

Further, 28 is a material stopping device that temporarily stops the material M moving on the guide plate 27 and supplies the material M to the second chain conveyor 26 side in synchronization with the processing work on the forging machine side. The plate 29 is attached to a rod 30a of a cylinder 30, and the stop plate 29 is driven up and down by pneumatic control of the cylinder 30.

Further, as shown in FIG. 5, the receiver is provided with a pair of movable walls 31.31 on both side walls of the tray 15, and the distance between the two movable walls 31.31 is adjusted to the operating handle 32 provided on one side of the tray 15. It can be adjusted by a rotation operation, and the interval between the movable walls 31, 31 can be arbitrarily adjusted according to the length of the material M.

According to such a configuration, the chain 10.11 is moved one shift at a time in the direction of the arrow β by pneumatic control of the cylinder 22, and the receiver moves the material M stored in the tray 15 onto the chain 10.11.
are sequentially locked to the locking parts 14.14 provided in 11,
transported upwards.

By the way, on the starting end side of the conveyance path of the material M, a conveyance error prevention means 17 composed of a coil spring 19, etc.
is provided, and the tip of the coil spring 19 is connected to the chain 1.
0.11, and is pressed in the direction of the arrow α with a predetermined pressing force, the material M having a small diameter can be transported, as shown in FIG. 6. Even if two materials M and M'' are simultaneously latched to one locking part 14 and conveyed, only the improperly latched material M'' is locked by the pressing force of the coil spring 19. The receiver is separated from the portion 14 and falls onto the tray 15, and is transported upward with only one piece of material M remaining in the locking portion 14.

In this case, the pressing force in the direction of the arrow α also acts on the material M remaining in the locking portion 14, but the material M remains in the locking portion while being locked in the locking tip 14b provided on the locking portion 14. 14, the remaining materials M will not fall off and can be reliably transported one by one.

Therefore, even if the dimensions of the locking portion 14 provided on the chain 10.11 are designed to match the maximum diameter of the material M used, since the conveyance error prevention means 17 is provided, one locking portion There is no risk that a plurality of materials M may be simultaneously locked and conveyed by the forging machine 14, and there is no risk of interfering with the forging work in the forging machine section.

Further, since the dimensions of the locking portion 14 can be set to match the maximum diameter of the material M used, it is possible to convey materials of all sizes from small diameters to large diameters.

In this embodiment, a means constructed of a coil spring 19 or the like is used as the conveyance error prevention means 17, but it is not necessarily limited to such a means. Alternatively, the number is not limited to one, but a plurality of them may be arranged in parallel.

Further, although the conveyance error prevention means 17 may be provided at any location on the conveyance path, if it is provided on the starting end side of the conveyance path as in this embodiment, the falling distance of the material M is short and the material M will fall easily when it falls. This has the advantage that the impact is small.

[Brief explanation of the drawing]

Figures 1 to 7 show one embodiment of the present invention. Figure 1 is a side view, Figure 2 is an enlarged view of the upper end of the frame, and Figure 3 shows the meshing state of the rack and spur gear. 4 is a front view showing the configuration of the one-way clutch, FIG. 5 is a top view of the tray, FIG. 6 is a side view showing the installed state of the means for preventing conveyance mistakes, and FIG. 7 is a front view showing the structure of the one-way clutch. A perspective view of the prevention means and FIGS. 8a and 8b are explanatory diagrams showing the locked state of the material, respectively. 1... Chain conveyor, 10, 11...
... Chain, 14 ... Locking part, 17 ...
・Transportation error prevention means, M, M', M″...
·material.

Claims (1)

[Scope of utility model registration request] In a material conveyance device for a forging machine, in which a rod-shaped material is conveyed by being conveyed by being conveyed by being conveyed by being conveyed by being conveyed by a bar-shaped material, the material is conveyed by being conveyed by a bar-shaped material being conveyed by being conveyed by a hook-shaped retaining portion provided on a chain of a chain conveyor. elastically contacts the material being conveyed.
A material conveyance device for a forging machine, characterized in that a material conveyance device for a forging machine is provided with a conveyance error prevention member that presses a material that is improperly retained in the locking portion in a direction to release the material from the locking portion.