JPS61226356A - 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 is applied to, for example, a continuous molding device for foamable synthetic resin, and is applied to a conveying device used to convey the molding mold to each process. .

[Technical Background of the Invention] For example, in a continuous molding device for foamable synthetic resin, as shown in Japanese Utility Model Publication No. 46-33262, a conveyor is installed between a driving sprocket driven by a motor and a driven sprocket. Pass the chain 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. A molding die is placed on these carts, and the molding die is shown in FIG.

Position A for the release agent application process, position B for attaching auxiliary materials,
Self-help continuous foaming molding is carried out by sequentially moving to the position C1 of the foaming deep liquid injection step, the heating oven D, and the position itE of the product demolding step.

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-described continuous molding apparatus for foamable synthetic resin, the molds used differ depending on the shape of the product, so it is necessary to replace the molds. 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 technology]

However, with 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, which is continuously running at a constant speed, and to pull the cart out to a work area outside the production line.

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 hooks protruding from the cart are dropped between the chain pieces and engaged, it is necessary to lift the cart and remove the hooks from between the chain pieces, and one mold weighs several tens of kilograms.
Since it weighs from 100 kg to several 100 kg, it requires a great deal of force to lift the entire cart, which is not only difficult to work with, but also highly 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.

Also, even if the trolley is removed from the conveyor chain in this way, when the trolley is pulled out to a work area outside the line,
Conventionally, this work had to be done manually by workers, so pulling out a heavy trolley to a work area outside the production line required a large amount of force, which was inefficient.

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. It is possible to automatically and efficiently attach and detach carts from the conveyor chain without any danger, even if the conveyor chain is The present invention aims to provide a conveying device that can automatically move carts onto a line.

[Summary of the invention]

In order to achieve the above object, the present invention attaches a chuck tall consisting of a fixed lever and a movable lever to a chain piece of a conveyor chain, and also provides a protruding locking protrusion on the above-mentioned cart to be held by this chuck mechanism. and the locking protrusion is held by the chuck N mechanism to cause the cart to travel along with the travel of the conveyor chain, and a plate cam operated by a drive means is provided at a predetermined position on the travel path of the conveyor chain, 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, and forming a hooking protrusion on the cart, A carry-out and carry-in chain separate from the conveyor chain is provided, and hooks provided on these carry-in and carry-out chains are engaged with hooking protrusions of the trolley to move the trolley along the running path of the conveyor chain and this running route. It is characterized by being able to be moved to and from an outside work area.

[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 and 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 and 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 7... run on this conveyance path 6.

As shown in FIG. 3, the six units jI7... are equipped with wheels 8... at the four corners, and guide rollers 9 are provided protruding from the lower surface of the center. Furthermore, a dog 10 corresponding to the locking projection of the present invention is protruded on one side of the cart 7, and a hooking projection 11 is provided on the other side. , 11 are provided protrudingly.

As shown in FIG. 2, a molding die 12 as an object to be transported is placed on the trolley 7.

A chuck machine 1113, which will be described later, provided on the conveyor chain 3 engages with the dog 10 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 12 placed on the trolley 7 is moved to the position A of the mold release agent application process shown in FIG.
, auxiliary materials are attached at process position B1, foaming liquid injection process position I
C1 is sequentially moved to the heating oven D and the product demolding step position E, so that automatic continuous foaming molding is performed.

The chuck mechanism 13 is shown in FIGS. 2 and 4. That is, in the conveyor chain 3, fixing levers 16 are provided integrally with vertically opposing chain pieces 14 and 15, respectively, at a predetermined interval in the running direction. A bin 17 is located between these upper and lower fixed levers 16.
A roller 18 is attached to the bin 17.

Further, a support shaft 19 is installed between the upper and lower fixed levers 16, and a movable lever 20 is attached to the support shaft 19 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 urged to rotate in the direction of the arrow in FIG. 4 by a torsion coil spring 25 wound around the support shaft 19. Therefore, the one row 523 attached to one end of the movable lever 20 is urged to approach the roller 18 attached to the fixed lever 16, and the roller 23 on the movable lever 20 side and the roller on the fixed lever 16 side are urged to approach the roller 18 attached to the fixed lever 16. 1
8, the dog 10 of the truck 7 is held between them.

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 arrow direction and L direction in FIG. When these plate cams 30 and 31 are operated, one of the rollers 24 attached to one end of the movable lever 20 in the chuck mechanism 13 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 dog 10 is released from being held by the chuck mechanism 13.

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.

In the workshop 21, a carry-out chain 35 and a carry-in chain 36 are arranged. The carry-out chain 35 and the carry-in chain 36 each have a chain 39 stretched endlessly between a driving sprocket 37 and a driven sprocket 38, with intervals between chain pieces (not shown in detail) of the chain 39. Hooks 40, 40 are provided protrudingly. Note that the carry-out chain 35 runs in the direction of arrow M in FIG. 1, and the carry-in chain 36 runs in the direction of arrow N in FIG.

When the carry-out chain 35 and the carry-in chain 36 are run, the hooks 40.40 are hooked on the hook projections 11.11 protruding from the cart 7, and move the cart 7 in the running direction of the carry-out chain 35 and the carry-in chain 36. It is designed to be pulled.

Further, a pull-out chain 45 and a pull-in chain 46 are arranged in the work area 27. These pull-out chain 45 and pull-in chain 46 are constructed by endlessly extending a chain 47 between a driving sprocket and a driven sprocket (not shown), and only the running side is visible in FIG. At the same time, the pull-in chain 46 is moved in the downward direction of the arrow in FIG. 1. Each chain 47 of the pull-out chain 45 and the pull-in chain 46 has a hook 48 on which a guide roller 9 protruding from the bottom of the cart 7 is hooked.
・Protrudingly installed.

Note that 49 is a guide rail that guides the guide roller 9.

The operation of the embodiment configured as described above will be explained. In the truck 7, the dog 10 protruding from the side surface is held by the chuck mechanism 13 formed on the conveyor chain 3, so that the conveyor chain 3 can run in the direction of arrow G. Accordingly, the conveyance path 6
It is also run on the top in the direction of arrow G at a constant speed.

When the trolley 7 is taken out from the transport path 6 to the workshop 27 for replacing the molding die 12, 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 13 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 13 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.

When the plate cam 30 moves forward in the direction indicated by the arrow by the cylinders 33, the carry-out chain 35 is run in the direction of arrow M.

By this running, the hook 40.4 of the carry-out chain 35
0 is caught on the hooking protrusion 11.11 of the truck 7, and the truck 7 is pulled out in the direction of arrow M. Therefore, the trolley 7 is automatically transported to the position indicated by the imaginary line in FIG.

When the cart 7 is carried out to the position indicated by the imaginary line in FIG. 1, the pull-out chain 45 is run in the direction of the arrow S in FIG. When the hooks 48 of the drawer chain 45 are caught on the guide rollers 9 protruding from the bottom of the table 1!7,
The trolley 7 is pulled by the pull-out chain 45 and is pulled by the arrow S in FIG.
The mold is then moved to a mold exchange location (not shown).

On the other hand, when the cart 7 whose mold 12 has been replaced or repaired is fed into the conveyor chain 3, the procedure is as follows.

That is, the carriage 7 whose mold 12 has been replaced or repaired at a die exchange place (not shown) protrudes from the underside of the carriage 7 as the pull-in chain 46 moves in the downward direction of the arrow in FIG. When the hooks 9 are engaged with the hooks 48, they are pulled by the pull-in chain 46 in the downward direction of the arrow in FIG. 1, and are carried to a predetermined position.

When the trolley 7 is sent to the predetermined position, the carry-in chain 3
6 is run in the direction of arrow N, and as a result of this running, the hooks 40 and 40 of the carry-in chain 36 are connected to the hooking protrusion 1 of the trolley 7.
1.11 and automatically pulls the trolley 7 into the conveyance path 6.

At this time, the plate cam 31 shown in FIG.
6 into the conveyance path 6 to a position facing the plate cam 31.

As the plate cam 31 moves forward in the direction of the arrow, the chuck mechanism 13 is opened, so the roller 18 of the fixed lever 16 of the chuck i mechanism 13 hooks the dog 10 of the cart 7.
The conveyor chain 3 pushes the cart 1.

After the roller 18 of the fixed lever 16 of the chuck mechanism 13 hooks the dog 10 of the cart 7, when the plate cam 31 is moved backward in the direction opposite to the arrow direction by the operation of the cylinder 34, the chuck mechanism 13 The movable lever 20 is rotated in the direction of arrow H in FIG. 4 and hits the dog 10, thereby holding the dog 10 between the fixed lever 16 and the movable lever 20.

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

According to the above embodiment, the movable lever 20 of the chuck mechanism 13 is rotated by moving the plate cams 30, 31 forward and backward, 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 13 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, since there is no need to stop the conveyor chain 3, other Continuous molding work by the molding die 12 of the trolley 7 is not obstructed.

Then, the cart 1 released from the conveyor chain 3 by the plate cams 30 and 31 and the chuck mechanism 13 is automatically pulled out from the conveyance path 6 to the work area 27 by the carry-out chain 35, so manual labor is also required for this pull-out operation. without,
It does not require a great deal of labor from workers, is safe, and can be carried out efficiently.

Furthermore, since the movement of the cart 7 from the work place 21 to the conveyance path 6 is also carried out automatically, it does not require much labor from the worker, and can be carried out safely and efficiently.

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 attached to the conveyor chain is opened and closed by a plate cam installed at a predetermined position on the travel path of the conveyor chain, thereby releasing and clamping the locking protrusion protruding from the trolley. , a conveyor that not only does not require much effort to release the above-mentioned cart from the conveyor chain or engage it with the conveyor chain, but also does not have a negative effect on the continuous running of the conveyor chain, and is continuously running. Even if it is a chain, there is no danger, and the ms of the cart relative to the conveyor chain can be performed automatically and efficiently. Moreover, in addition to attaching and detaching the cart to the conveyor chain, the cart is moved between the conveyor chain's running route and the work area outside this running route by means of the carry-out and carry-in chains. Movement between the route and the workplace also does not require human labor, making it possible to improve work efficiency.

[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. 2 is a section taken along If-I in 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, 11... Hook protrusion, 13
...Chuck mechanism, 14, 1s...Chain piece, 1
6...Fixed lever, 20...Movable lever, 30.3
1...Plate cam, 33.34...Cylinder, 35...
- Carrying out chain, 36... Carrying in chain, 40...
hook.

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. releasing the grip of the protrusion to release the cart from the conveyor chain, and forming a hook protrusion on the cart;
A carry-out and carry-in chain separate from the conveyor chain is provided, and hooks provided on these carry-in and carry-out chains are engaged with hooking protrusions of the trolley to move the trolley along the running path of the conveyor chain and this running route. A conveyance device characterized in that it is adapted to be moved between an external work place and a work place.