JP3794662B2 - C-type press for vulcanization - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a C-type press for vulcanization, and more particularly to an improvement of a C-type press for vulcanization that effectively prevents the opening side of the C-shaped frame from opening up and down during pressurization. is there.
[0002]
[Prior art]
Conventionally, in vulcanizing presses that perform pressing simultaneously with vulcanization of rubbery elastic materials, etc., C-type presses with a cantilever structure using a C-shaped frame are generally used because of their good workability and productivity. Has been.
[0003]
[Problems to be solved by the invention]
By the way, the C-type press as described above has a so-called opening that causes the opening side of the frame to open in the vertical direction when vulcanizing and pressing a large product, and it is difficult to obtain a uniform pressing force. Conventionally, as shown in FIGS. 3A and 3B, the entire frame 4 is enlarged in order to deepen the recess 3 between the upper frame 2 for attaching the upper die 1a and the lower frame 3 for attaching the lower die 1b. As shown in FIG. 4, a swivel joint mechanism 5 is provided between the upper frame 2 and the upper mold 1a, and a reinforcing plate 7 is provided between the bed 6 and the lower frame 3. There is known a C-type press in which the opening side of the frame 4 is prevented from opening at the time of pressurization through the interposition.
[0004]
However, when the former frame is made larger, the entire device becomes larger, which increases costs and requires a large space. In the latter case, the structure is complicated and high-precision pressing is possible. There was a problem of not.
The present invention has been devised by paying attention to such conventional problems, and the opening side of the C-shaped frame is moved up and down during the vulcanization press while maintaining good workability and productivity. An object of the present invention is to provide a C-type press for vulcanization that can effectively prevent opening in the direction to improve the molding accuracy of the molded product, and can further downsize the entire apparatus with a simple structure and can be manufactured at low cost. Is.
[0005]
[Means for Solving the Problems]
The present invention, in order to achieve the above object, the opening side of the C-type-like frame body, set the mouth opening prevention device for preventing the opening of the opening between the upper frame and the lower frame upon pressurization, The mouth opening prevention device is constituted by a connecting rod provided on the upper frame so as to be movable up and down via a lifting means, a lock mechanism for locking the lower end of the connecting rod to the lower frame, and a guide rod for the connecting rod. This is the gist.
[0006]
The present invention is configured as described above, and the vulcanizing press is a cantilevered C-type vulcanizing press with good workability and productivity. Further, a mouth opening prevention device is provided on the opening side of the frame body. By providing it, it is possible to effectively prevent the opening side of the C-shaped frame from opening in the vertical direction during the vulcanization press, improve the molding accuracy of the molded product, and further reduce the size of the entire device with a simple structure. Moreover, it can be manufactured at low cost.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
1 is an overall front view of a C-type press for vulcanization embodying the present invention, FIG. 2 is a side view of FIG. 1, and a frame body 10 of the C-type press for vulcanization is heated on a bed 11. A lower frame 14 for attaching a lower die 13 having a heating means 12 such as the above and an upper frame 16 having a C-shaped cross section for attaching an upper die 15 that can be raised and lowered are integrally connected via a connecting frame 10a.
[0008]
In addition, it is also possible to fix the upper mold | type 15 provided with the heating means 12, and to comprise the lower mold | type 13 so that raising / lowering is possible.
The opening X side of the frame body 10 having a C-shaped cross section has an opening X between the upper frame 16 and the lower frame 14 when pressurized, that is, when a product is pressurized with the lower mold 13 and the upper mold 15. A mouth opening prevention device 17 is provided for preventing the mouth from opening.
[0009]
The lower frame 14 is provided with a table 18 which can move horizontally to the opening X side of the frame 16 via a cylinder 18a. On the table 18, both end portions of the lower mold 13 are clamped or unclamped. Clamping means 19a, 19b are provided.
The upper die 15 attached to the upper frame 16 is detachably attached to a die support member 21 supported by the ram 20 via clamp means 22a and 22b. The die support member 21 is attached to the pressurizing cylinder 23. , Two lifting assist cylinders 23a, 23b and a plurality of lifting racks 24 are supported by the upper frame 16 via a tuning rack 24. Reference numeral 25 denotes a guide member for the mold support member 21.
[0010]
In the mouth opening prevention device 17, two lifting means 27 a and 27 b such as lifting cylinders are attached to the side surface of the upper frame 16 via a support member 26, and a concave shape is formed at the lower end of the lifting means 27 a and 27 b. The two connecting rods 29a and 29b provided with the locking portion 28 are suspended so as to be lifted and lowered, and the two connecting rods 29a and 29b are a pair of guide rods 30a supported by the support member 26. 30b is connected. Reference numeral 31 denotes a stopper attached to the upper ends of the guide rods 30a and 30b .
[0011]
Further, a locking mechanism 32 is provided on the side surface of the lower frame 14 to engage and lock the connecting rods 29a and 29b by engaging with a concave engaging portion 28 formed at the lower end of the connecting rods 29a and 29b. It is. The locking mechanism 32 includes a locking member 34 that is movable in the horizontal direction and engages with the concave locking portion 28 in a holder 33 in which the lower end portions of the connecting rods 29a and 29b are fitted, and pressurizes. The upper frame 16 and the lower frame 14 are locked via the connecting rods 29a and 29b and the lock mechanism 32 during pressing, and the opening X between the upper frame 16 and the lower frame 14 is prevented from opening during pressing. It is a thing.
[0012]
Further, at the time of pressurization, the extension of the connecting frame 10a that connects the upper frame 16 and the lower frame 14, the extension of the connecting rods 29a and 29b, and the extension of the guide rods 30a and 30b are set to be the same. is there.
The C-type press for vulcanization according to the present invention is configured as described above, and is provided with a mouth opening prevention device 17 on the opening side of the frame body 10 and connects the upper frame 16 and the lower frame 14 during pressurization. By setting the extension of the connecting frame 10a to be the same as the extension of the connecting rods 29a and 29b and the extension of the guide rods 30a and 30b, the opening side of the frame body 10 is in the vertical direction during the vulcanization press. By preventing the connecting rods 29a and 29b from being opened to each other, it is possible to perform pressure molding while always maintaining a uniform applied pressure, and to improve the molding accuracy of the molded product.
[0013]
【The invention's effect】
The present invention, on the opening side of the C-shaped form of the frame body as described above, only set the mouth opening prevention device for preventing the opening of the opening between the upper frame and the lower frame during pressurization, opening the mouth Since the prevention device is constituted by a connecting rod provided on the upper frame so as to be movable up and down via a lifting means, a lock mechanism for locking the lower end portion of the connecting rod to the lower frame, and a guide rod of the connecting rod , In the same way as in the above, while maintaining good workability and productivity, it is possible to effectively prevent the opening side of the C-shaped frame from opening up and down during the vulcanization press. The molding accuracy of the product can be improved, and the entire apparatus can be miniaturized with a simple structure and can be manufactured at low cost.
[Brief description of the drawings]
FIG. 1 is an overall front view of a vulcanizing C-type press embodying the present invention.
FIG. 2 is a side view of FIG.
FIGS. 3A and 3B are a side view and a front view of a C-type press for preventing the opening of a conventional frame body from being opened.
FIG. 4 is a side view of a C-type press for preventing an opening of a conventional frame body from being opened.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Frame main body 11 Bed 12 Heating means 13 Lower mold 14 Lower frame 15 Upper mold 16 Upper frame 17 Opening prevention device 18 Table 18a Cylinders 19a and 19b Clamping means 20 Ram 21 Mold support members 22a and 22b Clamping means 23 Pressure cylinder 23a, 23b Lifting auxiliary cylinder 24 Synchronization rack 25 Guide member 26 Support member 27a, 27b Lifting means 28 Locking portion 29a, 29b Connecting rod 30a, 30b Guide rod 31 Stopper 32 Lock mechanism 33 Holder 34 Locking member X Opening portion 10a Connecting frame

Claims (1)

Comprising a lower mold or upper mold provided with heating means on the bet, vulcanization C type comprising a C-type-like frame body movable up and down one lower die or the upper die Dochi Raka provided integrally In the press
On the opening side of the C-type-like frame body, only set the mouth opening prevention device for preventing the opening of the opening between the upper frame and the lower frame during pressurization, the mouth opening prevention device, the upper frame Vulcanizing C comprising: a connecting rod provided so as to be movable up and down via an elevating means; a lock mechanism for locking a lower end portion of the connecting rod to a lower frame; and a guide rod for the connecting rod. Mold press.

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