JPS6281300A - Forming press - Google Patents

Abstract

PURPOSE:To improve the rate of operation of a forming press by obstructing an adhesion of a raw material onto a forming surface, by providing an oil applying member which can move forward and backward, between an upper die and a lower die, and moving the oil applying member along the forming surface of the die, when taking out a formed part, or in the course of a cycle time of a supply of the raw material. CONSTITUTION:A metallic die oil applying device 19 is installed and provided on a supporting frame 16 of an ejecting device 8 of a forming press. The device 19 is provided with an oil applying roller 20 which has been formed by winding a sponge to a roller body having a center hole. Before a forming work, oil of an oil cup 34 penetrates the whole periphery of the sponge surface by a rotation of the oil applying roller 20. Subsequently, when a formed part 9 is formed in upper and lower dies 4, 3, the ejecting device 8 is operated, and the oil applying roller 20 applies oil to forming surfaces 4a, 3a in the course of a takeoff cycle time. In this way, an adhesion of a raw material to the forming surfaces 4a, 3a can be obstructed, therefore, a formed part of a non- defective can be formed, and the rate of operation of the forming press can be raised.

Description

[Detailed description of the invention] The present invention aims to solve the following problems.

(Field of Industrial Application) This invention relates to a molding press, and more specifically, it is equipped with an upper mold and a lower mold, and the molding material supplied between the upper mold and the lower mold is transferred between the upper mold and the lower mold. This invention relates to a molding press adapted for compression molding.

(Prior art) When using a molding press, especially a powder molding press, to compression mold a molding raw material to which a binder has been added to increase the degree of adhesion of the molded product, the raw material adheres to the mold extremely strongly. , - In order to prevent this, conventionally the mold is manually coated with oil using a sponge or the like every 2 or 3 molding operations, which significantly reduces the operating rate of the molding press. There was a problem.

(Problems to be Solved by the Invention) This invention eliminates the above-mentioned conventional problems, and solves the above-mentioned problems by removing the upper mold from the upper mold during the take-out cycle time for taking out the molded product from between the upper mold and the lower mold or during the raw material supply cycle time. It is an object of the present invention to provide a molding press in which oil can be applied to both molding surfaces of a lower mold, and the mold can be coated with oil without reducing the operating cycle time of the molding press.

The configuration of the present invention is as follows.

(Means for Solving the Problems) The present invention takes the measures as described in the claims above, and its effects are as follows.

(Function) After supplying the molding raw material by moving the raw material supply means laterally between the upper mold and the lower mold, the upper mold and the lower mold move up and down to compress and mold the molding raw material.

Thereafter, the ejecting means is moved laterally between the upper mold and the lower mold to remove the molded product. During the cycle time for taking out the molded product by the take-out means or during the cycle time for supplying the raw material by the raw material supply means, the oil application member moves laterally into and out of the space between the upper mold and the lower mold. As the oil-applied member moves forward and backward, the oil-applied member moves along one molding surface of the upper mold and lower mold when moving forward, and moves along the other molding surface of the upper mold and lower mold when retreating. Then apply oil to both molding surfaces.

When the applicator roller is in the retracted state, the oil applicator roller is rotated by the rotating shaft to uniformly apply oil to the circumferential surface of the oil applicator roller. Next, the oil application roller is moved back and forth to move the oil application roller along both the molding surfaces of the upper mold and the lower mold. As a result, the application roller rolls around the shaft on the molding surfaces of the upper mold and the lower mold and rotates as a result of the rotation, thereby applying oil to the molding surfaces of the upper and lower molds.

(Example) Below, drawings showing examples of the present application will be described. In the molding press shown in Fig. 1, 1 and 2 are fixedly installed press bodies, 3 is a lower die installed in the press body 1 so that it can move up and down, and 4 is movable up and down in the press body 2. The upper mold is installed in the upper mold, and these are positioned so as to face each other. The lower mold 3 and the upper mold 4 are collectively referred to as a mold. 5 is a metal frame, which is supported by a support 6 as is well known. Next, 7 is a raw material supply means (charger) for supplying the molding raw material between the upper mold 4 and the lower mold 3.
As is well known, the mold can be moved sideways between the upper mold 4 and the lower mold 3. Reference numeral 8 denotes a take-out device for taking out a molded product 9 such as a tile on the lower mold 3 onto a take-out table 10. In this take-out device 8, 11 is a rail for lifting and lowering fixed to the press body 2, 12 is a lifting body attached to the rail 11 so as to be able to move up and down, and 13 is an air cylinder for lifting and lowering. Reference numeral 14 denotes a rail for advancing and retracting provided on the elevating body 12, 15 a support arm attached to the rail 14 so as to be able to move forward and backward, 16 a support frame fixed to the support arm 15, and 17 an air cylinder for advancing and retreating. It is. Reference numeral 18 denotes a take-out means for taking out the molded product, and a suction cup for sucking the molded product 9 is exemplified. This suction 118 is fixed to the support frame 16. This suction cup 18 is configured to be able to suction the molded product 9 by air suction force.

Next, 19 indicates molding surfaces 4a, 3 of the upper mold 4 and lower mold 3.
This is a mold oiling device for applying oil to the support frame 18 of the take-out device 8, as shown in FIGS. 1 to 3 in this embodiment.
It is installed in In this mold oil application device 19, 2
0 is an oil-applied roller, which includes a roller body 22 made of a hard material such as vinyl chloride and having a center hole 21;
A sponge 23 is wound around the outer periphery of the sponge 23. A large number of small holes 24 are bored in the roller main body 22. Reference numeral 25 indicates that the oil application roller 20 is attached to the upper die 4 and the lower die 3 during the cycle time for taking out the molded product by the taking out means 18.
This mechanism is capable of moving forward and backward from the side between the two, and is constructed using the rail 14, support arm 15, support frame 16, and air cylinder 17 of the takeout device 8 in the drawing. A pair of bearing units 26 are fixed to the support frame 16. 27 is the bearing unit 26
The support shaft is rotatably supported by angle 26, and the bases of support arms 28 are fixed to both ends, and the bases of levers 29 are fixed to the middle part. 30 is a hollow rotating shaft rotatably supported by a bearing unit 31.31 fixed to the tip of the support arm 28.28, and one end of a hose 33 is connected to both ends via a rotary joint 32. connected. An oil cup 34 is attached to the support arm 15 and is connected to the other end of the hose 33. 35 is an oil hole bored in the middle part of the rotating shaft 30;
The shaft hole 30a of the rotating shaft 30 communicates with the outside of the shaft. 36
37 is a bearing for rotatably mounting the oil application roller 20 on the rotating shaft 30, and 37 is a stop ring fixed to the rotating shaft 30.

Reference numeral 38 denotes oil seals for preventing oil leakage from the bearing 36 portion, which are fitted onto the inner end portions of the rotating shaft 30, respectively. Reference numeral 39 denotes an air cylinder for lifting and lowering that is attached to the support arm 15 via a bracket 40, and the tip of the lever 29 is connected to its piston rod 39a. 41 is a pulley fixed to the rotating wheel 30, 42 and 43 are pulleys rotatably fitted to the support shaft 27, and both are integrally provided. Reference numeral 44 denotes an electric motor, which is exemplified as a rotational drive device, fixed to the support frame 16, and a pulley 45 is fixed to the motor shaft 44a. 46.47 is a belt suspended between pulleys 41.42 and 43.45. The oil application roller 20 and the rotating shaft 30 that supports it are collectively referred to as an oil application member in this specification.

In the structure described above, when compression molding the molded product 9, the raw material supply means 7 first advances from the side between the upper mold 4 and the lower mold 3 to supply the molding raw material into the metal frame 5. and then retreats to its original position. Next, the upper mold 4 is lowered and the molding material in the metal frame 5 is compression-molded between it and the lower mold 3. Thereafter, the upper mold 4 rises to its original position, and then the lower mold 3 rises as shown in FIG. 1 to push up the molded product 9 from within the metal frame 5. Next, the take-out device 8 is operated to take out the molded product 9 on the lower mold 3. That is, the first
In the state shown in the figure, the air cylinder 17 is operated to advance the support arm 15 toward the metal frame 5 and move the suction cup 18 above the molded product 9. Thereafter, the air cylinder 13 is operated to lower the elevating body 12, bringing the suction cup 18 into contact with or close to the molded product 9, and in this state, the suction cup 18 attracts the molded product 9. Next, the air cylinder 13 is operated again to raise the elevating body 12, and then the air + IJ cylinder 17 is operated to retreat the support arm 15 to the original position shown in FIG. is moved from above the lower mold 3 to above the take-out table 10.

Thereafter, the suction cup releases the suction of the molded product 9 and releases the molded product 9 onto the take-out table 10. Thereafter, the lower mold 3 is lowered to form a space within the metal frame 5, and the above operations are repeated to perform the next molding operation.

On the other hand, when the take-out device 8 operates to take out the molded product 9 as described above, during the take-out cycle time of the molded product 9, the oil application roller 20 is moved between the molding surface 4a of the upper mold 4 and the lower mold as follows. Apply oil to the molding surface 3a of No.3.

First, when oil is supplied to the oil cup 34 prior to the molding operation, the oil in the oil cup 34 flows through the shaft hole 30 of the rotating shaft 30 via the hose 33 and the rotary joint 32.
Flows into a. In this case, the amount of oil flowing into the shaft hole 30a is adjusted to an appropriate amount by the cock of the oil cup 34.

The oil flowing into the shaft hole 30a passes through the oil hole 35 and enters the center hole 2.
Enter within 1. Also, the electric motor 44 operates and the motor shaft 4
4a rotates, and this rotation of the motor shaft 44a causes the pulley 4
5, Belt 47, Pulley 43° 42 Transmitted to the rotating shaft 30 via the belt 46 and pulley 41, and this rotating shaft 3
0 is rotated in one direction. The rotation of the rotation shaft 30 is transmitted to the oil application roller 20 via the bearing 36, and in the retracted position shown in FIG. 1, the oil application roller 20 is rotated in the same direction by the rotation shaft 30. When the oil application roller 20 is rotated in this manner, the oil that has entered the center hole 21 as described above penetrates uniformly over the entire circumference of the sponge 23 of the oil application roller 20 through the many small holes 24. do. In this state, when the support arm 15 moves forward as described above, the air cylinder 39 is actuated and the piston rod 39a protrudes, causing the support arm 2 to rotate upward and the oil application roller 20 to mold the upper die 4. It is raised to a height position where it can come into contact with the surface 4a. Next, when the support arm 15 is moved forward, the oil application roller 20 is also moved between the upper mold 4 and the lower mold 3, and is moved along the molding surface 4a of the upper mold 4. As a result, the oil application roller 2o contacts the molding surface 4a and rolls smoothly following the molding surface 4a (i.e., is driven by the molding surface), thereby uniformly applying the oil in the sponge 23 to the entire surface of the molding surface 4a. . After that, when the suction cup 18 adsorbs the molded product 9 and rises, the air cylinder 39 is operated again, this time to rotate the support arm 2 downward, and the oil application roller 2
0 is lowered to a height position where it can come into contact with the molding surface 3a of the lower mold 3. After that, when the support arm 15 is retreated, the oil application roller 20 is also retreated along the molding surface 3a, so that the oil application roller 20 is smoothly transferred along the molding surface 3a, and the oil in the sponge 23 is transferred to the molding surface. Apply evenly to the entire surface of 3a. As described above, oil is uniformly applied to the molding surfaces 4a and 3a of the upper mold 4 and lower mold 3 during the cycle time for taking out the molded product 9, and then the molding raw material is compressed between the upper mold 4 and the lower mold 3. During molding, it is possible to prevent molding raw materials from adhering to both molding surfaces 3a, 4a.

Incidentally, the oil application member may be attached to the raw material supply means 7 so as to apply oil to both molding surfaces of the upper mold and the lower mold during the raw material supply cycle time by the raw material supply means. In this case, oil is applied to the molding surface of the lower mold when the charger moves forward, and oil is applied to the molding surface of the upper mold when the charger retreats. Further, the lubricating member may be provided in an advancing/retracting mechanism provided separately from the extracting means and the raw material supplying means. Further, the oil application member is not limited to a roller, but may be composed of a non-rotatable sliding body, such as a sponge plate.

(Effects of the Invention) As described above, in the present invention, the oil-applied member is coated with oil along the molding surface 4a of the upper mold 4 and the molding surface 3a of the lower mold 3. When moving, oil can be applied to both the molding surfaces of the upper mold 4 and lower mold 3,
As a result, when the molding raw material is supplied between the upper mold 4 and the lower mold 3 and compression molded by the upper mold and lower mold, the raw material is prevented from adhering to the molding surfaces of both the upper mold and the lower mold. It has the advantage of being able to mold high-quality molded products.

Furthermore, even if oil can be applied to both the molding surfaces of the upper mold 4 and the lower mold 3 as described above, both molding surfaces 3a, 4
The oil spill on a is caused by the removal of the molded product by the take-out means when the take-out means 18 moves back and forth between the upper mold 4 and the lower mold 3 to take out the molded product 9 between the upper mold and the lower mold. This can be carried out during the cycle time, which has the effect of preventing a decrease in the operating rate of the forming press.

In addition, in the present invention, in the retracted state where the molding surface is not contacted, the oil application roller 20 is rotated with oil attached to it, thereby uniformly applying oil to the circumferential surface of the oil application roller 20. It has the effect of being able to be attached to.

Moreover, even if the oil application roller is driven to rotate, when the oil application roller 20 is moved along both the molding surfaces of the upper mold 4 and the lower mold 3, the oil application roller 2° is moved along the molding surfaces of the upper mold 4 and the lower mold 3. 3
It can be driven to rotate by contact with a and 4a, and as a result, the oil adhering to the circumferential surface of the oil application roller 20 can be uniformly applied to the molding surfaces of the upper and lower molds, and in subsequent molding operations. It is possible to prevent raw materials from adhering to both molding surfaces.

[Brief explanation of drawings]

The drawings show an embodiment of the present application, and FIG. 1 is a side view partially cut away, FIG. 2 is a back view seen from the direction of the arrow ■ in FIG. 1, and FIG. 3 is a partially cutaway side view. An enlarged cross-sectional view taken along the line mm. 3...Lower mold, 4...Upper mold, 3a, 4a...
Molding surface, 7... Raw material supply means, 18... Removal means,
9... Molded product, 20... Oil application roller, 25... Advance/retreat mechanism.

Claims (2)

[Claims] (1) An upper mold and a lower mold are provided at opposite positions, and the molding raw material supplied between the upper mold and the lower mold is compressed and molded, and the raw material is supplied to the lower mold. The raw material supply means for this purpose is configured to move forward and backward from the side between the upper mold and the lower mold to supply the molding raw material, and the ejection means for taking out the molded product from the lower mold is provided in the upper mold. In a molding press configured to advance and retreat from the side between the upper mold and the lower mold to take out a molded product, an oil application member is provided for applying oil to the molding surface of the upper mold and the molding surface of the lower mold. A forward and backward movement mechanism is provided for moving the molded product forward and backward between the upper mold and the lower mold from the side during the molded product take-out cycle time due to the forward and backward movement of the take-out means or during the raw material supply cycle time due to the forward and backward movement of the raw material supply means. Moreover, when the oil-applied member is moved forward by the advance/retreat mechanism, it is moved along one molding surface of the upper mold and the lower mold, and when it is retreated, it is moved along the other molding surface of the upper mold and the lower mold. A molding press characterized in that it is configured to (2) An upper mold and a lower mold are provided at opposite positions, and the molding material supplied between the upper mold and the lower mold is compression molded, and the molding surface of the upper mold and An oil application member formed to be able to apply oil to the molding surface of the lower mold is moved along one of the molding surfaces of the upper mold and the lower mold when moving forward;
In a molding press that is arranged so that the retraction movement moves along the other molding surface of the upper mold and the lower mold, the oil application member includes a cylindrical oil application roller having a center hole and an oil application roller. The oiling roller is driven by the molding surfaces when moving forward and backward in contact with the molding surfaces of the upper and lower molds, and in the retracted position, A molding press characterized in that it is driven by a rotating shaft.