JPH0532255Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention relates to a secondary heating device for products such as vibration-proof rubber.

(Prior Art) In the case of anti-vibration rubber products with metal fittings, the metal fittings are vulcanization-bonded to the rubber elastomer at the same time as the rubber elastomer is vulcanized and molded, and then the rubber elastomer and the metal fittings that have been vulcanized and bonded together are subjected to secondary heating in order to continue the vulcanization bonding reaction.

Attempting to complete the vulcanization adhesion reaction between the metal fitting and the rubber elastic body during vulcanization molding of the rubber elastic body would take a very long time and be wasteful, so after the metal fitting and the rubber elastic body are once bonded, This is taken out of the vulcanization molding apparatus and subjected to secondary heating separately, thereby allowing only the vulcanization adhesion reaction to proceed and complete.

Conventionally, this secondary heating was performed by placing the vulcanized product in a heating furnace for a certain period of time.

(Problem that the invention aims to solve) However, when performing secondary heating of products using this method, it is difficult to process the products continuously due to batch processing, and this is difficult to automate the process. It becomes an obstacle.

Furthermore, heating the product in a heating furnace requires a lot of energy, resulting in a large amount of energy loss.

(Means for Solving the Problems) The device of the present invention was devised to solve these problems, and its gist is (a) multiple heating molds, and (b) predetermined upper and lower (c) a link that is rotatable around one axis with respect to a member whose position is fixed and that has a pressurizing portion at a portion remote from the rotation axis; (d) a link-type pressing mechanism in which the pressing part presses the heating mold directly or indirectly against the pressure receiving plate by rotational force applied to the link; A pressing means such as a cylinder that applies power,
The link type pressing mechanism and the pressing means are arranged vertically in multiple stages corresponding to the pressure receiving plate.

(Action and Effect of the Invention) In vibration-proof rubber products, when performing secondary heating after vulcanization molding, it is often necessary to perform this under pressure.

Therefore, in the device of the present invention, link type pressure mechanisms and pressing means are provided corresponding to the number of pressure receiving plates, that is, the number of heating dies set, and each of the heating dies set in multiple stages is controlled by these link type pressure mechanisms. , so that it can be pressurized by a pressing means.

In the apparatus of the present invention, the secondary heating treatment can be continued by inserting the heating mold into or taking it out from the set position. This operation can be performed mechanically using an elevating device, a horizontal moving device, etc., and therefore, the link type pressurizing mechanism, pressing means, etc. should be controlled to operate in synchronization with them. Ba,
The process from setting the heating mold to taking it out can be done mechanically and automatically. This makes it possible to unattend the secondary heating process of products, which can significantly improve production efficiency.

Furthermore, in the device of the present invention, heating molds can be set in multiple stages, so area efficiency is high and narrow spaces can be used effectively.

Furthermore, with the device of the present invention, it is possible to heat the heating mold using a heating plate or the like, so thermal efficiency is high and energy loss is low.

(Example) Next, an example of the present invention will be described in detail based on the drawings.

In FIG. 1, 10 is a side frame, and a fixed platen 12 is provided at its upper end. A motor 14 is mounted and fixed on the fixed platen 12. A rotating shaft 16 is also provided at the upper end of the side frame 10, and a motor 14 is connected to the rotating shaft 16 via sprockets 18, 20 and a chain 22. On the other hand, a separate sprocket 23 is fixed to the end of the rotating shaft 16 protruding from the side frame 10, and this sprocket 23 and the sprocket 26 on the rotating shaft 24 provided at the lower part of the side frame 10 are connected to each other. An endless chain 28 is wound around it, and the chain 28 is moved by driving the motor 14.

Between the side frames 10, 10, pressure receiving plates 30 are vertically arranged in multiple stages at regular intervals. Further, brackets 32 are provided at both ends of the pressure receiving plates 30 in the left-right direction in the figure so as to hang down from the pressure receiving plates 30 (see FIG. 3). A cylinder 36 is fixed to these brackets 32, and an L-shaped link 38 is connected to a shaft 40 at the upper end.
It is rotatable around the center. Link 3
8 has a roller 42 at the tip as shown in FIG. 4, and in the roller 42 part,
The heating plate 44 and the heating mold 46 are pressed against the pressure receiving plate 30 from below. Shonetsu board 44
is supported by a support member so as to be able to float a certain distance. Further, a rod 48 of the cylinder 36 is attached to the connecting member 5 at the intermediate bending part of the link 38.
cylinder 3
A thrust force of 6 is applied to the link 38.

On the other hand, in front of the side frame 10, a lifting platform 52 is provided as shown in FIG. This lifting platform 52 has rollers 54, which sandwich a vertical guide rod 56 provided on the side frame 10. The chain 28 is fixed to the base end of the lifting table 52, and the chain 28 allows the lifting table 52 to be connected to the roller 5.
4 and a guide rod 56 to move up and down.

A heating mold 46 is provided at the rear of the other side frame 10.
A plurality of cylinders 58 for horizontally loading and unloading are arranged corresponding to each pressure receiving plate 30. These cylinders 58 are fixed to a rear plate 60, as shown in FIG. 5, and are provided with an engagement plate 62 and an engagement head 64 at their tips. The engagement plate 62 and the engagement head 64 form an engagement groove 66, and this engagement groove 66 is engaged with an engagement claw 68 provided on the heating mold 46.

On the other hand, guide rods 70 are fixed to both ends of the engagement plate 62, and the guide rods 70 are slidably fitted into a guide tube 72 fixed to the rear plate 60 and guided in movement.

Next, the operation of the device of this example will be explained. In this example, the heating molds 46 are set in four stages, upper and lower.
Since the operation of the apparatus is the same for all apparatuses, the explanation will be centered on the heating mold 46 on the uppermost stage.

Heating mold 46 set at a predetermined position on the top stage
is heated by a hot platen 44 under pressure by the link 38 and the cylinder 36, thereby causing a secondary vulcanization adhesive reaction of the internal product (here, a vibration-proof rubber product with metal fittings that has been vulcanized and molded). will be held.

After heating for a certain period of time, the cylinder 36
The rod is retracted, thereby opening the pair of links 38 and releasing the pressure on the heating mold 46. Next, cylinder 5 located at the rear
8 is activated to push the heating mold 46 forward while sliding it on the heating platen 44. Extruded heating mold 4
6 is a lifting platform 52 that is waiting in advance in front of it.
It is placed on top of the . Next, the elevating table 52 on which the heating mold 46 is placed is lowered by the drive of the chain 28, and at the lower end position, the heating mold 46 is taken out from the elevating table 52, and then a new heating mold 46 is placed on it. Alternatively, the product is removed from the heating mold 46 and a new product is set. Next, lifting platform 5
2 rises again and reaches the top position. At this time, the engagement claw 68 at the rear of the heating mold 46 enters the engagement groove 66 at the tip of the cylinder 58, and the two become engaged, and when the cylinder 58 is then retracted, the heating mold 46 moves into the heating platen 44. It is inserted between the heating plate 44 and the pressure receiving plate 30 while sliding on it. When the cylinder 36 is operated to push out the rod, the pair of links 38 rotate in the closing direction and the heating mold 46 is moved along with the heating platen 44 to the pressure receiving plate 30.
to press. If left in this state for a certain period of time, the product inside the heating mold 46 will be heated under pressure.
There, it undergoes secondary heating. Thereafter, the same operation is repeated for the heating molds 46 at each stage, thereby continuously performing secondary heating on the product.

Although the embodiments of the present invention have been described in detail above, the present invention can also be configured in other forms.

For example, the elevating mechanism described above may have a different configuration, and the mechanism for loading and unloading the heating mold may also have a different configuration. Furthermore, the present invention can be applied to products other than anti-vibration rubber, that is, to general products that require secondary heating, and can also be used to heat and integrate separate parts. It is possible to configure the system with various modifications without departing from the spirit thereof.

[Brief explanation of the drawing]

1 and 2 are a front view and a side view, respectively, of a secondary heating device which is an embodiment of the present invention;
4 and 4 are a front view and a partially cutaway plan view of the pressurizing mechanism of the secondary heating device, respectively, and FIG. FIG. 30...Pressure plate, 38...Link, 42...Roller, 44...Heating plate, 46...Heating type.

Claims (1)

[Scope of Claim for Utility Model Registration] A plurality of heating molds, a pressure receiving plate arranged in multiple stages at predetermined intervals above and below, and a member which is rotatable around one axis with respect to a fixed position member, and which is rotatable about one axis from the rotation axis. A link type pressurizing mechanism comprising a link having a pressurizing part at a separate part, the pressurizing part presses the heating mold directly or indirectly against the pressure receiving plate by a rotational force applied to the link, and the link. a pressing means, such as a cylinder, which is placed on the side of the link and applies rotational force to the link; and the link type pressing mechanism and the pressing means are arranged in multiple stages above and below corresponding to the pressure receiving plate. A secondary heating device for products such as anti-vibration rubber, which is characterized by: