JPS61226355A - Conveyor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a conveying device that is applied to, for example, a continuous molding device for foamable synthetic resin, and is used to convey the molding mold to each process.

(Technical background of the invention II) For example, in a continuous molding device for foamable synthetic resin, as shown in Japanese Utility Model Publication No. 46-33262, there is a gap between a driving sprocket driven by a motor and a driven sprocket. The conveyor chain is stretched endlessly,
This conveyor chain is made to run continuously at a constant speed, and a plurality of carts are hooked onto the conveyor chain at intervals, and these carts are made to run as the conveyor chain runs. Molding molds are placed on these carts, and the molding molds are placed at position A for the mold release agent application process, position B for attaching auxiliary materials, and position C1 for the foaming source liquid injection process, as shown in FIG. By sequentially moving the heating oven D1 to position E of the product model molding process, automatic continuous foam molding is performed.

In the above-mentioned conveyance device, when connecting a trolley to a conveyor chain, conventionally, connecting pieces protruding from the trolley are bolted to the chain pieces, or hooks protruding from the trolley are dropped between the chain pieces. A structure such as matching is adopted.

In the above-mentioned continuous molding equipment for foamable synthetic resin, the mold used differs depending on the shape of the product.
The mold needs to be replaced. When replacing a mold, it is not possible to remove only the mold from a trolley that is continuously running at a constant speed; the trolley must be removed from the running line, the mold must be removed from the trolley in a work area outside the line, and the mold must be removed from the trolley. Attaching other molds is being done.

(Problems with Background Art) However, in the conventional structure in which a cart is connected to a conveyor chain, it is not easy to remove the cart from the conveyor chain that is continuously running at a constant speed.

In other words, when the connecting pieces protruding from the cart are bolted to the chain pieces, the bolts must be removed while the conveyor chain and cart are running continuously at a constant speed, which is not very efficient. No, it's very dangerous.

In addition, if the hook protruding from the cart is dropped between the chain pieces and engaged, it is necessary to lift the cart and remove the hook from between the chain pieces, and only one mold is required.
Since it weighs between several tens of kilograms, it requires a great deal of force to lift the entire trolley, which not only is not easy to work with, but is also very dangerous.

If an attempt is made to stop the conveyor chain and remove the truck in order to prevent such a problem, it will adversely affect the continuous molding process using the molds of other trucks.

Therefore, in the past, replacing the mold required a lot of effort and was inefficient.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to not only not require a great deal of labor, but also to have no adverse effect on the continuous running of the conveyor chain, and to enable continuous running of the conveyor chain. The purpose of the present invention is to provide a conveying device that can automatically and efficiently attach and detach a cart to and from a conveyor chain without any danger even when using a conveyor chain.

(Summary of the Invention) In order to achieve the above object, the present invention provides a chain link of a conveyor chain with a chuck mechanism consisting of a fixed lever and a movable lever, and also attaches a chuck mechanism to the above-mentioned truck, which is clamped by the chuck mechanism. a plate having a protruding stop protrusion, the chuck mechanism clamping the stop protrusion so as to cause the cart to travel along with the conveyor chain; The present invention is characterized in that a cam is provided, and by operating the plate cam, the movable lever is actuated to release the locking protrusion from the chuck mechanism, thereby releasing the cart from the conveyor chain.

[Embodiments of the invention]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below based on a continuous molding apparatus for a foamable synthetic resin shown as an embodiment.

In the figure, 1 indicates a driving sprocket, and 2 indicates a driven sprocket. These driving sprocket 1 and driven sprocket 2 are arranged apart from each other, and a conveyor chain 3 is endlessly stretched between these driving sprocket 1 and driven sprocket 2. It is. Drive sprocket 1
is rotated at a constant speed in the direction of arrow F by a motor (not shown), and therefore the conveyor chain 3 is run at a constant speed in the direction of arrow G.

In addition, in the conveyor chain 3 of this embodiment, two chains 4.5 are arranged vertically apart and facing each other, as shown in FIG. 2, and two driving sprockets 1 and two driven sprockets 2 are also used. , the two chains 4.5 are synchronized and run integrally in the direction of arrow G at a constant speed.

An endless conveyance path 6 is formed outside the running line of the conveyor chain 3 along this running line. A plurality of carts 1... run on this conveyance path 6.

Each truck 7... has wheels 8 at its four corners, as shown in FIG.
..., and a guide roller 9 is provided protruding from the lower center surface. Furthermore, a dog 1o, which corresponds to the locking protrusion of the present invention, is provided on one side of the truck 7 in a protruding manner.

As shown in FIG. 2, a molding die 11 as an object to be transported is placed on the trolley 7.

A chuck mechanism 12, which will be described later, provided on the conveyor chain 3 is adapted to engage with the dog 1o protruding from the cart 7. Due to this engagement, the cart 7 is pulled by the conveyor chain 3 and runs along the conveyance path 6 in the direction of arrow G at a constant speed. By this traveling, the molding die 11 placed on the trolley 7 is moved to the position 11 in the mold release agent application process shown in FIG.
A, attachment of auxiliary materials is sequentially moved to process position B, foaming deep liquid injection process position C1, heating oven D, and product demolding process position E, so that automatic continuous foaming molding is performed.

The chuck mechanism 12 is shown in FIGS. 2 and 4. That is, in the conveyor chain 3, fixing levers 15 are provided integrally with chain pieces 13 and 14 that are vertically opposed to each other at a predetermined interval in the running direction. A bin 16 is located between these upper and lower fixed levers 15.
A roller 17 is attached to the bin 16.

Further, a support shaft 18 is installed between the upper and lower fixed levers 15, and a movable lever 20 is attached to the support shaft 18 so as to be rotatable in the middle thereof.

Rollers 23 and 24 are rotatably attached to both ends of the movable lever 20 via pins 21 and 22, respectively.

The movable lever 20 is biased to rotate in the direction of the arrow in FIG. 4 by a torsion coil spring 19 wound around the support shaft 18. Therefore, the one roller 23 attached to one end of the movable lever 20 is urged to approach the roller 17 attached to the fixed lever 15, and the roller 23 on the movable lever 20 side and the roller 23 on the fixed lever 15 side are urged to approach the roller 17 attached to the fixed lever 15. The dog 10 of the truck 7 is held between the rollers 17 and the roller 17 .

Inside the conveyor chain 3, plate cams 30, 31 are disposed at predetermined positions on the conveyance path 6, that is, at the truck removal position and the truck attachment position. These plate cams 30.
31 are air or hydraulic cylinders 33...
, 34 . . . are arranged to move forward and backward in the directions indicated by the arrows in FIG. When these plate cams 30 and 31 are operated, one of the rows 524 attached to one end of the movable lever 20 in the chuck mechanism 12 comes into contact with this plate cam 30, as shown in FIG. As a result, the movable lever 20 is rotated in the direction opposite to the direction of the arrow in FIG. 4, and the chuck mechanism 12 releases the dog 10 from being held.

In addition, 26 in FIG. 1 is a guide rail laid down on the conveyance path 6, and the guide roller 9 provided protrudingly provided on the lower surface of the trolley|bogie 7 is guided. Further, 27 is a work area for removing the molding die 11 from the cart 7 and attaching another molding die 11.

Furthermore, 28 in FIG. 2 is a chain guide that prevents the chain 4.5 from bending.

The operation of the embodiment configured as above will be explained.

Since the dog 10 protruding from the side of the truck 7 is held by the chuck mechanism 12 formed on the conveyor chain 3, as the conveyor chain 3 moves in the direction of arrow G,
It is also run on the conveyance path 6 in the direction of arrow G at a constant speed.

Then, when the trolley 7 is taken out from the conveyance path 6 to the workshop 27 for replacing the molding die 11, repair, inspection, etc.
When the corresponding truck 7 is moved to a position facing one of the plate cams 30, the cylinders 33... are operated to advance the plate cam 30 in the direction of the arrow.

Then, the roller 24 attached to the movable lever 20 of the chuck mechanism 12 comes into contact with the plate cam 30 shown by the imaginary line in FIG. It becomes like this.

Therefore, the roller 23 of the movable lever 20 is separated from the dog 10 of the truck 7, and the so-called chuck mechanism 12 is moved away from the dog 10 of the truck 7.
Release 0.

As a result, the carriage 7 is released from the restraint by the conveyor chain 3, so that it can travel freely. Therefore, the worker pushes the cart 7 by hand to the work area 2.
It can be withdrawn at 7.

On the other hand, when the trolley 1 whose mold 11 has been replaced or repaired is to be engaged with the conveyor chain 3, the trolley 7 is moved to the workshop 27 with the plate cam 31 advanced in the direction of the arrow shown in FIG. From there, it is pushed out onto the conveyance path 6 to a position facing the plate cam 31.

As the plate cam 31 moves forward in the direction indicated by the arrow, the chuck mechanism 12 is opened, so the roller 17 of the fixed lever 15 of the chuck mechanism 12 hooks the dog 10 of the cart 7.
The conveyor chain 3 pushes the cart 7.

After the O-ra 11 of the fixed lever 15 of the chuck mechanism 12 hooks the dog 10 of the cart 7, when the plate cam 31 is moved back in the direction opposite to the direction indicated by the arrow by the operation of the cylinder 34, the chuck mechanism The twelve movable levers 20 are rotated in the direction of arrow H in FIG.

Therefore, the cart 7 is pulled by the conveyor chain 3 and runs on the conveyance path 6.

According to the above embodiment, by moving the plate cams 30 and 31 forward and backward, the movable lever 20 of the chuck mechanism 12 is rotated and the dog 10 is automatically released and clamped. Not only does it not require any work and does not require a lot of effort from the worker, it is also safe.

Moreover, since the chuck mechanism 12 is opened and closed while the conveyor chain 3 is running, the carriage 7 can be efficiently engaged and disengaged from the conveyor chain 3. In addition, there is no need to stop the conveyor chain 3, so other The continuous molding operation by the molding die 11 of the trolley 7 is not obstructed.

In the above embodiment, the case of a trolley for transporting molding molds in a continuous molding device for foamable synthetic resin was explained, but the present invention is not limited to this. It is possible to carry things.

〔Effect of the invention〕

As described above, according to the present invention, the chuck mechanism 1 attached to the conveyor chain is closed by the plate cam installed at a predetermined position on the travel path of the conveyor chain, and the locking protrusion protruding from the cart is released and clamped. Therefore, not only does it not require a great deal of effort to release the cart from the conveyor chain or engage it with the conveyor chain, but it also does not have a negative effect on the continuous running of the conveyor chain, and the cart can run continuously. There is no danger even with a conveyor chain, and the cart can be attached to and detached from the conveyor chain automatically and efficiently.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a plan view of a continuous molding apparatus for foamable synthetic resin, and FIG.
3 is a plan view of the cart, and FIG. 4 is a plan view showing the chuck mechanism. 1... Drive sprocket, 2... Driven sprocket, 3... Conveyor chain, 6... Conveyance path, 7...
・Dolly, 10...dog, 12...chuck mechanism,
13.14... Chain piece, 15... Fixed lever,
20... Movable lever, 30, 31... Plate cam, 33
．． 34...Cylinder. Figure 3 1゜

Claims (1)

[Claims] In a conveying device in which a cart on which a conveyed object is placed runs along a conveyor chain endlessly stretched between a driving sprocket and a driven sprocket, a fixed lever is attached to a chain piece of the conveyor chain. and a chuck mechanism consisting of a movable lever, and a locking protrusion that is clamped by the chuck mechanism is provided on the cart, and the chuck mechanism clamps the locking protrusion to allow the cart to run on a conveyor chain. At the same time, a plate cam operated by a drive means is provided at a predetermined position on the traveling path of the conveyor chain, and by operating this plate cam, the movable lever is actuated to cause the above-mentioned locking by the chuck mechanism. A conveyance device characterized in that the protrusion is released from the grip and the cart is released from the conveyor chain.