JPH0321839Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application of the invention] The invention reciprocates a ram with respect to a press base, applies strong pressure to a workpiece between the press base and a work member attached to the ram, This invention relates to a press machine that performs various press processes.

[Background of the idea]

Press processing machines can be applied to a wide range of processing by replacing a pair of working members such as a die and a punch, or by replacing the parts that constitute the working members. In order to replace a work member or the parts that make up a work member and start a new job, fine adjustments are usually repeated several times to ensure that the replaced work member or part meets the specified work purpose. There is a need to.

However, conventional press processing machines have a structure in which work members are disassembled and assembled while the ram is fixed to the guide post, so these disassembly and assembly operations have to be carried out in the narrow space between the press base and the ram. The work efficiency is extremely poor. Moreover, since the work members must be removed from the press base and the ram each time fine adjustments are made, there is a problem in that a great deal of labor is required when moving to a new process.

In addition, for the same reason, inspections that should be carried out on a daily basis,
Adjustment requires a great deal of effort, resulting in poor workability and
The problem is that it is not economically viable.

The problems of such a conventional press working machine will be explained in more detail based on FIG. 7.

In FIG. 7, reference numeral 1 denotes a device main body in which a guide post driving device is housed, 2 a press base provided on the upper surface of the device main body 1, and 3 a guide post that penetrates the press base 2 and is housed in the device main body 1. A guide post connected to a drive device, 4 a die holder attached to the upper surface of the press base 2, 5 a die attached to the upper surface of the die holder 4, 6 a ram attached to the upper end of the guide post 3, 7
is a punch holder attached to the bottom surface of ram 6,
8 is a punch 8 attached to the lower surface of the punch holder 7.

A screw 3a for attaching a ram 6 is carved into the upper end of the guide post 3, and a threaded portion 3a carved into the guide post 3 is formed on the ram 6.
A guide post insertion hole 6a is provided for inserting the guide post a. The ram 6 is attached to the threaded portion 3a of the guide post 3 through the guide post insertion hole 6a, and is attached to the threaded portion 3a of the guide post 3 through the guide post insertion hole 6a.
It is fastened to the guide post 3 by a step portion 3c formed between the shaft portion 3a and the shaft portion 3b, and a nut 9 screwed onto the threaded portion 3a.

The die holder 4 is positioned by a positioning means 2a provided on the upper surface of the press base 2, and is fixed to the press base 2 by a fixing means 2b such as a bolt.
will be permanently installed. In addition, the punch holder 7 has a ram 6.
It is positioned by a positioning means 6a provided on the lower surface of the ram 6, and is fixed to the ram 6 by a fixing means 6b such as a bolt.

Furthermore, four positioning rods 4a (two in the drawing) are erected in all four corners on the upper surface of the die holder 4, and on the lower surface of the punch holder 7, there are two positioning rods 4a at positions opposite to these positioning rods 4a. A boss 7a that can be fitted is provided. The die holder 4 and punch holder 7 are positioned by fitting the positioning rod 4a and the boss 7a.

The conventional press machine described above has a threaded portion 3a of the guide post 3 and a guide post insertion hole 6 of the ram 6.
a, the positioning means 2a between the die holder 4 and the press base 2, and the positioning means 6a between the punch holder 7 and the ram 6. When the ram 3 is removed from the guide post 3, the relative positioning of these three components must be adjusted, making the positioning work extremely difficult.

Therefore, conventionally, when disassembling the die set for inspection, adjustment, or parts replacement, the work is done without removing the ram 6 from the guide post 3.

This situation causes various problems as described above.

[Purpose of invention]

The object of the present invention is to eliminate the drawbacks of the conventional press working machines described above, and to provide a press working machine that is easy to maintain such as die set inspection, adjustment, and parts replacement, and has high workability.

[Summary of the idea]

In order to achieve the above object, the present invention has one end of the ram rotatably attached to the tip of a post that reciprocates the ram, and one working member attached to the ram can be attached to the ram without separating the ram from the post. and the other working member attached to the press base can be separated, and a positioning means is provided between the ram and a mounting member that attaches the ram to the post, and when the ram is returned to its original position after turning,
This is characterized in that the positioning of the work member can be easily performed.

[Example of idea]

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 4.

Here, FIG. 1 is a sectional view showing the overall configuration of a press machine according to the present invention, FIG. 2 is a plan view of the press machine shown in FIG. 1, and FIG. 3 is a press with the ram removed. FIG. 4 is a plan view of the processing machine and an exploded perspective view showing the mounting structure of the ram and the post.

In these figures, 10 is the device main body, 11 is a press base provided on the top surface of the device main body 10, and 1
2a, 12b, 12c, 12d are press bases 11
13 is the press base 1
A die holder 14 is attached to the upper surface of the die holder 13; 14 is a die attached to the upper surface of the die holder 13;
5 is a ram attached to the upper end of the posts 12a, 12b, 12c, and 12d; 16 is a punch holder attached to the lower surface of the ram 15; and 17 is a punch attached to the lower surface of the punch holder 16.

As shown in FIG. 1, inside the device main body 10, there are posts 12a, 12b, 12c,
When disassembling and assembling the ram 15, the press drive mechanism 18 reciprocates the posts 12a and 12d.
An adjusting mechanism 19 that moves up and down b, 12c, and 12d is housed.

The press drive mechanism 18 includes a press drive motor 20
The rotational movement of the press drive motor 20 is controlled by the post 1.
A crankshaft 21 and a connecting rod 22 that convert the reciprocating motion of 2a, 12b, 12c, and 12d;
The reciprocating driving force of the connecting rod 22 is transferred to the posts 12a, 1
Adjuster 23 that transmits to 2b, 12c, 12d
This adjuster 23 and the posts 12a, 1
2b, 12c, and 12d. Further, the adjusting mechanism 19 is
An adjuster motor 25, an adjuster 23,
A gear 27 and a gear 28 that transmit the rotational driving force of the adjusting motor 25 to the adjuster 23, and the adjuster 23 and the posts 12a, 12b, 12.
c and 12d.

The adjuster 23 has a screw 23a carved on its cylindrical outer peripheral surface, and a gear 28 that meshes with a gear 27 attached to the drive shaft 25a of the adjuster motor 25 is attached to the lower end of the screw 23a. It is formed in one piece.

The adjuster 23 and the connecting rod 22 are configured such that a spherical portion 22a formed at the tip of the connecting rod 22 is slidably held in a spherical holding portion 23b recessed in the center of the upper surface of the adjuster 23. connected by.

The connecting plate 24 connects the posts 12a, 12b, 1
2c, 12d, and the adjuster 23 is fixed to the lower end of the adjuster 2c and 12d.
The threaded portion 23a is screwed together.

The gears 27 and 28 are spur gears, and among these gears, the gear 28 attached to the adjuster 23 is attached to the drive shaft 25a of the adjuster motor 25 when the adjuster 25 is moved up and down. The adjuster 23 is designed to have a width that will not separate from the gear 27, and the adjuster 23 can freely move up and down relative to the adjuster motor 25 in a mutually meshed state.

In FIGS. 2 and 4, 29, 29a indicate side blocks for mounting the ram 15. These side blocks 29, 29a are
Posts 12a and 12b located at the top as seen from the figure
and the posts 12c and 12d located at the bottom are bridged in parallel to each other.

30 also connects the ram 15 to the posts 12a, 12.
b, 12c, and 12d, and is a holding shaft that is rotatably attached to the device body 1 when viewed from FIG.
It is bridged over posts 12b and 12d erected on the right side of the block 0, and superimposed on the right end portions of the side blocks 29 and 29a.

The side blocks 29, 29a and the holding shaft 30 are fixed to the posts 12a, 12b, 12c, 12d by nuts 31, 32, 33, 34.

As shown in FIG. 4, the ram 15 has a width W that allows it to fit tightly between the side blocks 29 and 29a, and has a rear end that fits into the lower half of the holding shaft 30. A shaft insertion groove 35 is recessed therein, and mounting pieces 36, 36a are provided to protrude from the upper surface in the left-right direction. This ram 15 is assembled by fitting the shaft insertion groove 35 into the lower half of the holding shaft 30, fixing the mounting pieces 36, 36a to the side blocks 29, 29a, and attaching the side blocks 29, 29 with bolts 37, 37a.
fixed on a.

Reference numeral 38 is a shaft holder, and the holding shaft 30 is attached to the lower surface of the shaft holder.
A shaft insertion groove 39 sufficient to fit the upper half of the shaft is provided. This shaft retainer 38 fits the shaft insertion groove 39 into the upper half of the holding shaft 30, and the bolts 40, 4
It is fastened to the ram 15 by 0a.

On the upper surface of the die holder 13, as shown in FIG. A boss 42 that can be tightly fitted is provided.

These die holder 13 and punch holder 16
, with the positioning rod 41 and boss 42 fitted, press base 11 and ram 1, respectively.
It can be attached to 5.

In the press machine of the above embodiment, when the press drive motor 20 is rotated, the crankshaft 2
1, connecting rod 22, adjuster 23, connecting plate 24,
The ram 15 reciprocates up and down via the posts 12a, 12b, 12c, and 12d, and presses the workpiece between the die 14 and the punch 17 to perform press working.

Furthermore, when the adjuster motor 25 is driven to rotate, the adjuster 23 is rotated via the gears 27 and 28, and the guide posts 12a, 12b, 12c, and 12d are raised or lowered via the connecting plate 24 screwed thereto. Ru.

When inspecting, adjusting, or replacing the die 14 and punch 17, as shown in Figure 5,
The adjusting motor 25 is rotated to raise the guide posts 12a, 12b, 12c, and 12d.
The boss 42 is removed from the positioning pin 41. Next, remove the bolts 37, 37a fixing the ram 15 and the side blocks 29, 29a, and remove the ram 15.
is rotated about the holding shaft 30. As a result, the die 14 and punch 17 can be inspected, adjusted,
Work such as replacement can be easily performed.

When returning the ram 15 to its original position after the work is completed, rotate the ram 15 around the holding shaft 30,
The mounting pieces 36, 36a of the ram 15 are fixed on the upper surfaces of the side blocks 29, 29a, and both are attached to the bolts 3.
It is sufficient to just fasten at 7 and 37a. That is, since the ram 15 is fastened to the holding shaft 30, it will not be misaligned in the front-rear direction (in the direction of arrow A in FIG. This is because, since the spacing is approximately equal to the spacing, the ram 15 is positioned in the left-right direction (in the direction of arrow B in FIG. 2) when the ram 15 is placed on the side blocks 29, 29a.

In addition, in the above embodiment, as a working member,
Although a case has been described in which a die and a punch are provided, the gist of the present invention is not limited to this, and it is possible to provide other arbitrary molds or jigs.

Further, the gist of the present invention resides in that the ram is rotatably attached to the tip of the post, and a positioning means is provided between the ram and the mounting member that attaches the ram to the post, and the invention has such a structure. If so, the shapes and structures of the ram, side block, post, holding shaft, and shaft presser are not limited to those of the above embodiments.

[Effect of idea]

As explained above, in the press processing machine of the present invention, the ram is rotatably attached to the tip of the post that drives the ram, so the post is raised and attached to one of the work member holders attached to the press base. The pair of work members can be easily separated by simply removing the boss provided on the other work member holder attached to the ram from the provided positioning rod and removing the bolt that connects the ram and side block. can do. In addition, a positioning means is provided between the ram and the mounting member that attaches the ram to the post, so when reassembling it after disassembly, simply rotating the ram around the holding shaft returns the ram to its original position. can do. As described above, according to the present invention, it is possible to disassemble working parts, which has been difficult in the past.
It is possible to provide a press processing machine that is extremely easy to assemble, easy to maintain and inspect, such as adjustment of working members and replacement of parts, and excellent in workability.

[Brief explanation of the drawing]

Figure 1 is a sectional view showing an embodiment of the press machine according to the present invention, Figure 2 is a plan view of the press machine shown in Figure 1, and Figure 3 is a plane view of the press machine with the ram removed. Figure 4 is an exploded perspective view showing the post and ram attachment means, Figures 5 and 6 are sectional views showing the ram removal means, and Figure 7 shows an example of a conventional press machine. It is a female sectional view. 10: Equipment body, 11: Press base, 12a,
12b, 12c, 12d: Post, 13: Die holder, 15: Ram, 16: Punch holder, 18:
Press drive mechanism, 19: Adjustment mechanism, 20:
29, 29a: side block, 30: holding shaft,
38: Shaft holder, 41: Positioning rod, 42: Boss.

Claims (1)

[Scope of utility model registration request] In a press processing machine, a ram is arranged so as to be reciprocally driven relative to a press base, and strong pressure is applied to a workpiece between the press base and a work member attached to the ram to perform various press processes. A press characterized in that the ram is rotatably attached to the tip of a reciprocating post via a side block and a holding shaft, and the ram is positioned with respect to the post by the side blocks and holding shaft. Processing machine.