JPH0735014U - Molding equipment - Google Patents

Abstract

(57) [Summary] [Purpose] By controlling the processing state of the subsequent process depending on the quality of the processing in the previous process, the discharge of defective products can be prevented without stopping the device. [Structure] Even if a part of the intermediate molded body 2 is lost during the previous processing, the intermediate molded body 2 is left as it is without being removed, and on the other hand, by storing the missing position, it may occur during the next processing. The position of the non-defective product is determined, and this part is discarded as an unnecessary part.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a molding device for vulcanizing and molding a sheet material such as an O-ring, and then punching it into a product shape to separate the product and unnecessary portions (hereinafter, also referred to as burrs), and particularly to vulcanization molding. The present invention relates to a molding device that can continue molding efficiently even if the molded product partially falls off.

[0002]

[Prior art]

 For example, an O-ring used in a sealing device or the like first heats one sheet of cloth 1 as shown in FIG. 7 (A) by using two molding dies each having a processed surface formed into a product shape. After the continuous vulcanization molded body 2 shown in FIG. 7 (B) is obtained by pressing, the unnecessary portion (burr) 2b of this vulcanization molded body 2 is shown in FIG. 7 (C) by a punch and a die. It is manufactured as shown by the reference numeral 2a by being separated. A vulcanization molding machine and a punching machine are usually used in this step, and the vulcanization-molded molded product 2 is transferred from the vulcanization molding machine to the punching machine as an intermediate molded product as shown in FIG. 7B. It

[0003]

[Problems to be solved by the device]

 By the way, in order to improve the production efficiency of the above-mentioned O-ring 2a, as shown in FIG. 5, a large number of products 2a are taken from one sheet-shaped molded product 2, and the molded product is transferred from the vulcanization molding process to the punching process. When it is transported, it is still a continuous sheet-shaped molded product. In this case, in the vulcanization molding machine, in order to facilitate the peeling of the molded product, one of the molding dies is strengthened so that the sheet-shaped molded product 2 adheres to the other molding dies. ing.

However, since the mold on the side to which the sheet-shaped molded article adheres needs to have a relatively weak releasing action, the sheet-shaped molded article is taken out of the molding die and transferred to the punching machine. At this time, there was a problem that a part 2c of the sheet-shaped molded product remained in the molding die 7 as shown in FIG. When a part 2c of the sheet-shaped molded product remains in the molding die of the vulcanization molding machine in this way, when the vulcanization molding is performed next, the supplied dough 1 and the part 2c of the remaining molded product are overlapped. Each other, defects will occur not only in that part but also in the peripheral products. Therefore, conventionally, after each vulcanization molding process, it was confirmed whether or not there was any molded product remaining in the mold of the vulcanization forming machine, and a treatment to remove it was taken. Therefore, the vulcanization molding machine had to be stopped during the removal work, resulting in extremely low productivity and work efficiency. In addition, if you miss the previous molded product remaining on the vulcanization molding machine, it may be conveyed to the punching machine as it is and punched out as a product.

The present invention has been made in view of the above problems of the prior art, and stops the apparatus by controlling the processing state of the subsequent process according to the quality of the processing in the previous process. It is an object of the present invention to provide a molding apparatus that can prevent defective products from being discharged without a problem.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the molding apparatus of the present invention is a molding machine for molding a multi-piece molded product that is integrated with a burr, and separates the molded product molded by the molding machine into a product and a burr. In a molding apparatus having a punching machine, a sensor for detecting whether or not a product is missing from a molded product molded by the molding machine, and an arrangement of presence or absence of the product of the molded product detected by the sensor. The punching machine reads the information on the presence / absence of the product of the previous molded product from the storage unit and stores the product of the molded product from this information. A control unit that determines a range that does not require punching and outputs a command signal in the determined range to the drive unit of the punching punch, and the drive unit controlled by the control unit removes the molded product from the burr. It has a punching punch that sequentially punches. It is set to.

[0007]

[Operation] When a large number of products are taken from the dough, the desired processing is performed on the dough to form a molded product, and then the molded product is released from the mold in order to convey the molded product to the product and the burr. , A part of the molded product may remain in the mold. In the present invention, when the molded product is separated into a product and a burr, a punch punch is provided so that the molded product is divided into several regions and sequentially cut, and the molded product carried into the process is The sensor detects partial omissions and stores the position in the storage unit.

Since this stored position is a part that is expected to become a defective product when processing the next molded product, when the next cutting is performed, the molded product detected at the previous cutting is missing. The position information is read from the storage unit, and based on this information, the area for obtaining the molded product by the punching punch is limited. For example, the region including the part where the molded product is missing the previous time and the next molded product becomes defective is discarded as a burr without cutting by the punching punch. In short, with the molding device of the present invention, even if a part of the molded product is missing during the previous processing, it is left as it is without being removed, and on the other hand, by storing this missing position, it can occur during the next processing. The position of defective products will be identified, and this part will be discarded as an unnecessary part to enable continuous operation of the molding machine.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 is a block diagram showing a punching machine according to an embodiment of the present invention, FIG. 2 is a schematic view showing a vulcanization molding machine according to the same embodiment, and FIG. 2 (A) is a state before pressurization, 2 (B) shows a state during pressurization. 3 is a flow chart showing the control procedure of the same embodiment, and FIGS. 4 (A), (B) and (C) are plan views showing a molded product for explaining the operation of the same embodiment.

First, in the following embodiments, the present invention will be described by embodying a molding apparatus for manufacturing an O-ring. This O-ring 2a is shown in FIG. 7 (B) by first heating and pressing one sheet of cloth 1 as shown in FIG. 7 (A) by using two forming dies as in the conventional case. After obtaining a molded product 2 which is a continuous vulcanized product, an unnecessary portion (burr) 2b of this molded product 2 is cut off by a punch and a die as shown in FIG. 7 (C). A vulcanization molding machine X and a punching machine Y are usually used in the manufacturing process of such an O-ring, and the vulcanization molded body 2 as shown in FIG. 7B is a vulcanization molding machine X as a molded product. Is transferred to the punching machine Y.

Although the vulcanization molding machine X is not particularly limited, for example, as shown in FIGS. 2A and 2B, two molding dies 7 and 8 having machined surfaces formed into product shapes are close to each other. The mold is provided so that it can be separated from each other, and a heating heater is provided in each mold. Then, the sheet material (raw material) 1 shown in FIG. 7 (A) is vulcanized while being pressed to obtain a molded product 2 shown in FIG. 7 (B). When vulcanization is completed in the state shown in FIG. 2 (B), the two molding dies 7 and 8 are separated from each other and the sheet-shaped molded product 2 is taken out, but always one of the molding dies (for example, the lower mold 7) is used. It is preferable to relatively strengthen the release action of the release material applied to the other mold 8 so that the molded product 2 adheres. This molded product 2 is composed of a product portion 2a which will be an O-ring in a later step and a burr portion 2b which is connected to the product and discarded in a later process. After releasing from the molding die 7 of the vulcanization molding machine X, it is transferred to the punching machine Y shown in FIG.

In order to cut and separate the sheet-shaped molded product 2 shown in FIG. 7B into a product portion 2a and a burr portion 2b as shown in FIG. 7C, the punching machine Y of this embodiment has A die 9 and a punch 3 are provided, and the die 9 comprises a fixed die 9a and a movable die 9b. On the other hand, the punch 3 has a blade corresponding to the shape of the O-ring 2a, and the blade of the punch has a blade portion 3a for cutting the inside of the O-ring 2a with the movable die 9b and the outside of the O-ring 2a. A blade portion 3b for cutting between the fixed die 9a and the fixed die 9a. Then, when the punch 3 descends, first, the blade portion 3a formed to project on the punch cuts the inside of the O-ring 2a between the punch 3 and the movable die 9b, and when the punch descends, it is formed on the outer periphery of the punch. The blade portion 3b cuts the outside of the O-ring 2a from the fixed die 9a. At this time, as the punch 3 descends, the movable die 9b also descends against the elastic force of the spring 10.

The punch 3 has a number of punches corresponding to one row of the sheet-shaped molded product 2 as shown in FIG. 4, and in addition to being moved up and down by the drive unit 11, the punch 3 has a row shown in FIG. It is provided so as to be sequentially movable in the lateral direction. When it moves to the upper part of one row, it moves up and down to cut that row, and after moving to the next row, it moves up and down to cut the next row. As described above, the punching machine Y according to the present embodiment does not punch the sheet-shaped molded product 2 in one stroke, but rather cuts the molded product 2 into several areas (in the embodiment shown in FIG. It is divided into areas) and cut sequentially.

A through hole 12 is formed in the movable die 9b and the fixed die 9a described above, and the photoelectric sensor 4 is arranged below the through hole 12. On the other hand, a photoelectric sensor 4 is similarly provided at the tip of the punch 3, and the pair of photoelectric sensors 4 and 4 illuminate the burr portion 2b inside the O-ring 2a of the sheet-shaped product. Then, when the molded product 2 is released from the vulcanization molding machine X described above, if the burr portion 2b inside the O-ring remains in the molding die 7 of the vulcanization molding machine X, the Since the punches and the photoelectric sensors 4 and 4 of the die corresponding to the positions are in a light-transmitting state and normally in a light-shielding state, each time the punch 3 is moved along the row of the sheet-shaped molded product 2, this ON / OFF state is set. The OFF signal is taken into the input unit 13. As the sensor used in the present invention, various sensors can be applied in addition to the photoelectric sensor. In addition to detecting the physical presence or absence depending on the molding target, for example, air leakage, magnetic camera, etc. It can be appropriately changed according to the characteristics of the object to be molded.

The molding apparatus of the present embodiment has a storage unit 5 for storing the ON / OFF signal fetched by the input unit 13, and mainly stores the missing parts of the molded product 2 for each column number. For example, as shown in FIG. 4B, when there is a missing portion (hatched portion) in the third row of the sheet-shaped molded product 2, when the molded product is punched out one by one, the photoelectric conversion is performed during the stroke of the third row. Although the signals from the sensors 4 and 4 become transparent, in such a case, it is stored in the storage unit 5 that there is a missing portion in the third column, and punching by the punch 3 continues as it is. .

In the control unit 6 according to the present embodiment, when the sheet-shaped molded product 2 to be punched next is carried into the punching machine Y, the information stored in the storage unit 5 at the time of the previous punching is stored. read out. In the example described above, the information is that there is a missing portion in the third column. However, as shown in Fig. 4 (B), even if there is a missing portion at one location in the third row, the O-ring around it may also be defective. Then, the generation range of defective products is estimated based on the position of the missing portion read from the storage unit 5. For example, if the O-ring in the range indicated by the dotted line in FIG. 4C is defective, the control unit 6 searches for all column numbers including these defective products. Then, a command signal is output to the drive unit 11 so as to jump without punching the positions of all column numbers including defective products. In this example, punching is performed on the first row, the fifth row, and the sixth row, and the third row, the fourth row, and the fifth row are not punched.

Next, the operation will be described. The sheet material 1 is vulcanized and molded into a continuous sheet-shaped molded product 2 by the vulcanization molding machine X shown in FIGS. 2A and 2B, and the sheet-shaped molded product 2 is released from the molding die 7. Transfer to the punching machine Y shown in FIG. In the punching machine Y, first, the punching punch 3 is moved to, for example, the initial position shown by the dotted line in FIG. 4A (step 1), and the photoelectric sensors 4 and 4 detect whether or not there is a missing portion (step 2). ).

At this time, if there is a missing portion, the process proceeds to step 4 and the column number is stored in the storage unit 5. If there is no missing portion, the process proceeds to step 5 and the previously stored information is read from the storage unit 5 and it is determined whether punching molding is necessary or not. For example, as described above, when there is a missing portion as shown in FIG. 4 (B) and the range in which defective products occur is the range as shown in FIG. 4 (C), step 6 in FIG. 3 is performed. The unnecessary punching range determined in step 2 is the second to fourth rows shown in FIG. Therefore, when the punching punch 3 is located in a position other than this row, the molded product 2 is punched in the step 7, and when it is located in the second to fourth rows, the step 7 is jumped to the step 8. . The punching of the molded product 2 by the punching punch 3 is performed by the driving unit 11 shown in FIG. 1. The driving unit 11 lowers the punching punch 3 and the two blades 3a and 3b move the O-ring 2a. Cut inside and outside to separate.

When the punching is completed in the first row, the driving unit 11 moves the punching punch 3 to the next row, and the information on the previous row is erased from the storage section 5 (step 9), and then step 2 is performed. Repeat the operation from. When the punch punch 3 reaches the final row and the punching is finished, the punching and forming in the main punching machine Y is finished. As described above, in the molding apparatus of the present embodiment, even if a part of the molded product is missing during the previous processing, it is left as it is without being removed, while the missing position is stored so that the next time The position of the defective product that may occur during processing is determined, and this part is discarded as an unnecessary part.

It should be noted that the embodiments described above are described for facilitating the understanding of the present invention, and are not for limiting the present invention. Therefore, each element disclosed in the above-described embodiments is intended to include all design changes and equivalents within the technical scope of the present invention. For example, in the above-mentioned embodiment, the present invention has been described with reference to a specific example applied when manufacturing an O-ring, but the present invention can be applied to other products, and in addition to being configured by the vulcanization molding machine X and the punching machine Y. Also, various combinations are possible.

[0021]

[Effect of device]

 In the molding apparatus of the present invention, even if a part of the product in the molded product is missing during the previous molding in the molding machine, it is left as it is without being removed, while the missing position is stored in the storage unit. By this, the range of defective products that may occur at the position of the next molding machine is discriminated, and the control unit prevents the punching machine from punching this part. Therefore, even if a product adheres to the molding die and a defective product is generated, that part can be discarded together with the bar.Therefore, the molding machine is stopped and the molding machine is checked for any missing parts and removed. do not have to. As a result, the molding machine can be operated continuously without stopping, and unmanned operation is possible. In addition, the work man-hours are reduced and the productivity is also improved (note that burrs can be regenerated, so the cost does not increase). In addition, parts that are expected to produce defective products are not cut, but can be discarded together with burrs, so there is no risk of accidentally shipping them as products.

[Submission date] March 28, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

[0004]

[Prior art]

However, the thickness of the joint between the product portion 2a and the burr portion 2b of the sheet-shaped molded product affects the finishability , and the thinner the thickness , the better the finished state. For example and have set the 5 / 100~6 / 100 ^mm, since become disconnected with a relatively weak force, when the transfer is taken out the sheet-shaped molded article from the mold in the punching machine, As shown in FIG. 6, there is a problem that a part 2c of the sheet-shaped molded product remains in the molding die 7. Thus, when a part 2c of the sheet-shaped molded product remains in the mold of the vulcanization molding machine, when the vulcanization molding is performed next, the supplied dough 1 and the remaining part 2c of the molded product are overlapped. Each other, defects will occur not only in that part but also in the peripheral products. Therefore, conventionally, after each vulcanization molding process, it was confirmed whether or not there was any molded product remaining in the mold of the vulcanization forming machine, and a treatment to remove it was taken. Therefore, the vulcanization molding machine had to be stopped during the removal work, resulting in extremely low productivity and work efficiency. In addition, if you miss the previous molded product remaining on the vulcanization molding machine, it may be conveyed to the punching machine as it is and punched out as a product.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a punching machine according to an embodiment of the present invention.

2A and 2B are schematic views showing a vulcanization molding machine according to the embodiment, wherein FIG. 2A shows a state before pressurization and FIG. 2B shows a state during pressurization.

FIG. 3 is a flowchart showing a control procedure of the embodiment.

4A, 4B and 4C are plan views showing a molded product for explaining the operation of the embodiment.

FIG. 5 is a plan view showing a conventional molded product.

6 is a cross-sectional view taken along line 6-6 of FIG.

7 (A), (B) and (C) are cross-sectional views showing a method for manufacturing an O-ring.

[Explanation of symbols]

 X ... Vulcanization molding machine (molding machine) Y ... Punching machine 1 ... Sheet-like material 2 ... Molded product 2a ... Product part (O-ring) 2b ... Unnecessary part (burr) 3 ... Punch punch 3a, 3b ... Blade part 4 Photoelectric sensor (sensor) 5 Storage unit 6 Control unit 7, 8 Mold 9 Die 9a Fixed die 9b Movable die 10 Spring 11 Drive unit 12 Through hole 13 Input unit

Claims (1)

[Scope of utility model registration request] 1. A molding machine (X) for molding a multi-cavity molded product (2) integrated with a burr (2b), and a molded product (2) molded by the molding machine (X) as a product (2a). ) And a burr (2b) are separated into a punching machine (Y), the molded product (2) is molded by the molding machine (X) into a product (2).
Sensor (4) for detecting whether or not there is a missing of a)
And a storage unit (5) that stores information on the presence or absence of the product (2a) of the molded product (2) detected by the sensor (4), and the punching machine (Y) includes , The information on the arrangement of the presence or absence of the product (2a) of the previous molded product is read from the storage unit (5), and the range in which the product (2a) of the molded product (2) does not need to be punched is determined from this information, A control unit (6) for outputting the command signal in the determined range to the drive unit (11) of the punching punch (3).
And the drive unit (11) controlled by the control unit (6)
The product (2a) of the molded product (2) is burred (2b) by
And a punching punch (3) for sequentially punching.