JPH037113Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is a press machine used for sheet metal processing such as notching, drilling, bending, cutting, etc. of iron plates, aluminum plates, or angle materials. The present invention relates to a simple rotary press machine that can perform pressing operations of the same type or different types easily and efficiently by sequentially rotating press dies to pressing positions.

(Prior art) Conventionally, sheet metal processing such as drilling holes in various sheet metals, bending, etc.
In cutting and bending of angle materials, etc., a workpiece is inserted between a press die consisting of an upper die and an upper die, and the processing is performed by a press operation by relative movement of the upper die and the lower die. Such press machines include a uni-punch machine with a single mold installation, a mass production press machine that operates continuously for mass production, or an NC machine with multiple upper and lower molds.
Turret presses and the like are known. With the exception of turret presses, only one type of press mold is attached to one press machine. Furthermore, even if the upper and lower molds are fixedly installed to the press body, or are removable, the operation of the press must be temporarily stopped in order to replace them.

(Problems to be solved by the invention) Among the conventional press machines for sheet metal processing mentioned above, the uni-punch machine with one type installation has poor work efficiency, and moreover, the work is entrusted to a specific worker.
A dedicated worker is required. Further, although mass-production presses are advantageous for continuously performing one type of press processing, they are not suitable for processing a wide variety of products using multiple types of molds. The turret press machine is large-scale and expensive, requires a large working floor area, and in the case of small-volume production, it takes a long time to prepare, resulting in high costs.

The present invention eliminates such conventional drawbacks, and allows multiple types of press dies to be easily brought to the processing position one after another without the need for attachment/detachment. It is an object of the present invention to provide a simple rotary press machine that can be transported as it is to a machine and efficiently perform press work there using a plurality of press dies.

(Means for Solving the Problems) The simple rotary press machine according to the present invention has a hydraulic spindle that is installed above the base and reciprocates up and down, and a hydraulic spindle that is rotatably installed on the top of the base and that moves vertically as a whole. a plurality of rotary tables disposed between the upper surface of the base and the lower surface of the rotary table and supporting the lower surface of the rotary table so as to float the rotary table from the upper surface of the base with a spring force; The rotary table includes a support roller mechanism, a guide roller that contacts a peripheral portion of the rotary table to guide the rotational movement of the rotary table, and a positioning mechanism that regulates the rotational position of the rotary table, and the rotary table includes: A plurality of press molds are placed and fixed on the upper surface of the table, and when the press molds are pressed by the operation of the hydraulic spindle, the lower surface of the table is lowered together with the support roller so that the lower surface of the table directly touches the base. It was designed to be supported.

(Example) Next, the present invention will be described with reference to the drawings.

FIG. 1 is an overall perspective view of a simple rotary press according to an embodiment of the present invention, and FIG. 2 is a partially cutaway front view of the embodiment shown in FIG. The press machine of this embodiment has a base 1 of a height suitable for an operator to operate it while standing in a working position in front or to the side, and as described later, the press machine includes a drive source necessary for the press operation,
Spare press dies and a press waste collection unit are all stored inside the base. An L-shaped column 2 having sufficient rigidity to receive the press reaction force is erected at the center of the upper surface of the base 1, and the L-shaped tip of the column projects perpendicularly toward the upper surface of the base. A hydraulic spindle 3 is provided to move up and down. The hydraulic pump 18 that drives the hydraulic spindle 3 is installed at the bottom of the base as shown in FIG. ing.

The rotary table 4 according to the present invention is a donut-shaped disk, and the column 2 penetrates through the hollow part of the table, and is installed on the upper surface of the base 1 via support rollers to be described later. FIG. 3 is an enlarged front view of the shaft support of the support roller 7 that rotatably supports the rotary table 4. As shown in FIG. A roughly U-shaped roller holder 23 is fixed on the base 1, and a pair of vertical brackets 23a formed on the U-shaped holder 23 are formed with U-shaped long grooves with an open top. A roller shaft 25 of the support roller 7 is inserted into the support roller 7 . As clearly shown in FIG. 3, a compression spring 22 is disposed between the roller shaft 25 and the base of the pedestal, that is, the pedestal mounting portion, so that the support roller 7 is always urged upward and rotated. It is in pressure contact with the lower surface of the table 4. Note that, in order to ensure the retention of the compression spring, a vertical shaft 24 passing through the compression spring 22 is provided between the roller shaft 25 and the pedestal mounting portion. The mechanism of this support roller 7 is such that a plurality of rollers, for example four, are mounted on the base 1 at equal intervals along the circumferential direction corresponding to the lower surface of the rotary table 4 so that the axis of the roller faces the center of the rotary table 4. provided. During non-pressing operation, the rotary table 4 is lifted by the support roller 7 by the compression spring 22, and the lower surface of the table is slightly lower than the upper surface of the base, especially the rigid table support surface 19 at the center of the base, as shown in FIG. It floats up from the base 1 with a gap t, thereby making it possible to rotate around the center of the table. The support roller 7 is made of high quality rubber that has a certain degree of frictional force.

Referring to FIGS. 1 and 2, a plurality of guide rollers 5 that are in contact with the inner peripheral surface of the hollow portion of the rotary table 4 are pivotally supported by the base 1 via a bracket 13. As shown in FIG. This guide roller 5 rotates as the rotary table 4 rotates, and guides the rotary table 4 so that it rotates smoothly around its central axis without causing misalignment.

A bearing member 10 is fixed to one side of the top surface of the base on the side of the rotary table 4, and a positioning pin 6 is inserted into the bearing member 10 so as to be slidable horizontally and axially toward the center of the table. . The tip of the positioning pin 6 is a rounded protrusion or a tapered protrusion. The positioning pins 6 are arranged at predetermined intervals in the circumferential direction on the outer periphery of the rotary table 4.
A plurality of recesses 8 into which the tip protrusions fit are formed. Further, an E-ring 12 is attached to the midway part near the tip of the positioning pin 6, and this E-ring 1
A compression spring 9 is installed between 2 and the bearing member 10. The positioning pin 6 is always pushed toward the outer periphery of the rotary table 4 by this compression spring 9, and when the tip of the pin fits into the recess 8 on the outer periphery of the table, the positioning pin 6 is positioned in the circumferential direction of the rotary table 4 at that position. will be done. By pulling out the head portion of the positioning pin 6 against the compression spring 9, the pin tip is removed from the recess 8 on the outer circumference of the table, thereby allowing the table 4 to rotate. The position of each recess 8 is related to the position of a plurality of press dies mounted on the rotary table 4, and when a certain press dies reaches the press operation position, that is, the position below the hydraulic spindle 3, A recess 8 on the outer periphery of the table corresponding to
is determined to align with the positioning pin 6.

Power indicator lamp 1 is located at an appropriate position on the front of the base.
4. A manual operation switch 16 etc. is provided, and in some cases a foot switch 20 for foot operation.
is provided. As shown in Fig. 2, a receiving box 17 for press waste is housed inside the base, and this receiving box is communicated with the top surface of the base, so that the chips etc. that have fallen from the press mold can be collected directly or during simple work. It is designed to be discharged into a receiving box 17. Various press-type storage tables 15 are also provided within the base, and can be easily accessed by opening an opening/closing door 21 on the front of the base.

A press mold (a set of upper and lower molds) 11 is placed on a predetermined position on the rotary table 4 and fixed with screws or the like. In the illustrated example, only one press mold 11 is shown, but a plurality of press molds of the same type or different types are mounted and fixed. Of course, each press mold can be removed and replaced. Pull the positioning pin 6 outward to rotate the table 4 manually or electrically,
The necessary press die 11 is brought to the central position directly below the hydraulic spindle 3, and the positioning pin 6 is fitted into the recessed portion on the outer periphery of the table while making fine adjustments. Since the rotary table 4 is positioned at this position,
After setting the workpiece (not shown) in the press die 11, operate the switch 16 or 20 (ON).
Then, the hydraulic pump 18 and hydraulic cylinder are driven to lower the hydraulic spindle 3. Hydraulic spindle 3
The initial pressure when the press die 11 hits the upper die is received by the support roller 7 made of high quality rubber via the rotary table 4, and when the hydraulic spindle 3 further descends, the corresponding stroke is gradually applied by the compression spring 22. The rotary table 4 descends while receiving the load, and under a certain amount of load, that is, 80 to 90% of the load on the hydraulic spindle, the rotary table 4 comes into contact with the table support surface 19 of the base 1, as shown in FIG. supported on the surface. When the rotary table 4 is lowered, the positioning pin 6 is elastically pushed into the positioning recess of the table 4 by the pressing force of the spring 9. easily slips out of the recess and does not interfere with the lowering of the table. In this manner, the rotary table 4 is in contact with and supported by the table receiving surface 19 of the base 1, and the press die 11 is operated by lowering the hydraulic spindle 3, thereby performing a press operation. . When processing is completed with one press die, the table is raised by the compression spring 22, and the rotary table 4 is rotated again so that the other press die is in the press operation position. A press die that becomes vacant after one press operation is completed can be used to set the next workpiece even during the press operation of another press die.
Note that, like the column 2, the table receiving surface 19 of the base 1 is configured to maintain sufficient rigidity to receive press operating force.

(Effects of the invention) As explained above, according to the invention, the structure as a whole is extremely simple, and it is possible to quickly convert press dies by simple operations. , cutting, notching, etc.)
Press processing can be performed continuously with one press machine. Since the structure is simple, it is easy to move and transport to other locations, and it can be easily transported to a work site and pressed immediately there. It has many advantages, such as being easy to operate and not requiring particularly skilled workers.

[Brief explanation of drawings]

Fig. 1 is an overall perspective view of a simple rotary press machine according to an embodiment of the present invention, Fig. 2 is a partially cutaway front view of the embodiment shown in Fig. 1, and Fig. 3 is a support according to an embodiment of the present invention. FIG. 4 is a partial front view of the embodiment of the present invention during non-pressing operation, and FIG. 5 is a partial front view of the embodiment of the present invention during press operation. . DESCRIPTION OF SYMBOLS 1...Base, 2...Column, 3...Hydraulic spindle, 4...Rotary table, 5...Guide roller, 6...Positioning pin, 7...Support roller, 1
1...Press mold, 19...Table receiving surface, 22...
...Compression spring, 25...Roller shaft.

Claims (1)

[Claims for Utility Model Registration] (1) A hydraulic spindle that is installed above the base and reciprocates up and down; a rotary table that is rotatably installed on the top of the base and can be vertically displaced as a whole; a plurality of support roller mechanisms disposed between the upper surface of the base and the lower surface of the rotary table and supporting the lower surface of the rotary table so as to float the rotary table from the upper surface of the base by a spring force; and the rotary table. The rotary table has a guide roller that contacts the peripheral portion of the rotary table to guide the rotational movement of the rotary table, and a positioning mechanism that regulates the rotational position of the rotary table, and the rotary table has a plurality of press molds on its upper surface. is placed and fixed thereon, and when the press mold is pressed by the operation of the hydraulic spindle, it descends together with the support roller so that the lower surface of the table is directly supported by the base. Simple rotary press machine. (2) The support roller is supported by a horizontal shaft extending in a radial direction that is elastically supported on the upper surface of the base via a spring, and is pushed by the lower surface of the table during press operation and descends together with the horizontal shaft. A simple rotary press machine as set forth in claim 1 of the utility model registration claim.