JPS6352719A - Saving apparatus for movable type clamp device - Google Patents

Abstract

PURPOSE:To contrive rationalization of exchanging a material to be clamped by providing a clamping part freely capable of advancing or retreating through a T slot and making it possible to displace from an attaching and detaching pass to a saving position with the clamping part proper. CONSTITUTION:The clamping part 2 possessed of a piston 11 and a T slot engaging part 10 and moving freely capable of advancing or retreating between the retreating position and clamping position through the T slot 6 is provided. Moreover, at the retreating position of the clamping part 2, the clamping part proper 3, the clamping part 2 are made possible to displace to the saving position lower than an upper surface 5a of a bolster 5 and its extended plane 5b. A the time of exchanging the material 14 to be clamped, the exchanging work is performed using the upper space of the plane 5a, 5b. Because the clamping device 1 at the saving position is not a hindrance for exchanging another clamping device 1, the exchanging work is rationalized.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a movement method in which, for example, a mold fixing clamp device is pushed and pulled along a T-groove provided on the upper surface of a bolster of a press machine. Regarding a device in which a type clamp device is moved out of the path where the mold is carried in and out of a press machine when changing the mold, there is also a mobile clamp device that fixes a workpiece to a table with a T-groove. The present invention also relates to a device applicable to the invention.

[Conventional technology]

Recently, hydraulic clamping devices have been mainly used to fix the molds of press machines, and for convenience, the clamping devices have been moved to a mold fixing position and a retracted position away from the mold. Mobile clamping devices that move automatically have also come into use. The movable clamp device includes a clamp part that has a T-groove engaging part that is a hydraulic clamp device, a drive part that pushes and pulls the clamp part in the T-groove, and a force acting on the clamp part to push and pull the clamp part. It is composed of a connecting body that connects the clamp part and a drive part provided on the main body so that pressure oil can be transmitted and pressure oil can be supplied and discharged. In such a movable clamping device, the clamping section is moved forward to the clamping position, where the clamping action is performed, and when replacing the mold, it becomes an unclamped state and is retreated to a retracted position where the mold can be carried in and out. . To carry in and out the mold, remove the upper mold from the slide side on top of the lower mold, move the lower mold horizontally to the top of the bolster, and place the mold on the mold transfer trolley at the same height. is exchanged with the type of In other words, the mold is moved and replaced with almost no vertical displacement.

[Problem that the invention seeks to solve]

In the conventional movable clamp device, when the clamp portion is retracted to the retracted position, it protrudes above the upper surface of the bolster or the horizontal plane that is an extension of the upper surface of the bolster.

Therefore, when replacing the mold in a press machine, a path for loading and unloading the mold must be selected avoiding a place where the clamp section is retracted, and there is a problem in that the path for loading and unloading the mold is severely restricted. This means that even when installing a convenient mobile clamping device, it is difficult to secure a passage for loading and unloading the mold, and at least the placement must be considered to ensure that passage. there were. Further, since four to eight general clamp devices are provided in a mold clamp, some of them are often related to the above-mentioned problem.

[Means for solving problems]

According to the means of the present invention, a main body is provided at the T-groove end position of the end edge of the mounting part where the T-groove is provided on the mounting surface of the clamped object, and the clamp part is connected to the main body via a connecting body extending from the main body. In the movable clamp device configured to be driven forward and backward along the T-slot by a driving part provided in the T-slot, the clamp part moves from inside the T-slot to the main body side at a retreating end and is held therein. The main body is configured such that the main body is displaced together with the clamp part to a retracted position out of a passage for attaching and detaching a clamped object whose boundaries are the mounting surface of the mounting part and its extension plane. It is provided for.

[For production]

According to this means, when the clamp part is retracted to the retracted end position by the first drive part, it comes off from the T-slot and is held on the main body side, and when the main body is displaced to the retracted position, Even if the object to be clamped is moved toward the clamp device along the object mounting surface, it will not come into contact with the clamp device.

〔Example〕

A first embodiment is shown in FIG. In the figure, l indicates a movable clamp device, which is composed of a clamp portion 2, a main body 3, and a connecting body 4. In the figure, 5 is the bolster of the press machine, and 6 is its T-groove.

The clamp part 2 is a conventional hydraulic clamp device, and has a T
T-slot engagement portion 1 that engages with the groove 6 and is movable along the T-slot 6
0, a piston 11 provided at the two ends of the rondo extending above it, and a cylinder 1.2 surrounding the piston 11, which acts to lift the cylinder upward with respect to the piston 11. When pressure oil is supplied to the hydraulic chamber 13 below the piston 11,
The cylinder 12 descends to perform a clamping action. The state shown by the imaginary line on the left side of the figure is the state in which the mold 14 is clamped.

The main body 3 is rotated and driven around a shaft 15 by a force whose detailed structure is not shown, and is driven by a sprocket-like winding portion and its rotation 1 so as to wind up the connecting body 4 and push it out conversely.
A drive section consisting of a drive section is provided.

Although the detailed structure of the connecting body 4 is not shown, it is the same as the flexible body for pushing and pulling hydraulic equipment described in Japanese Patent Application No. 61-1.52201 previously proposed. According to this, a hose for supplying pressure oil to the clamp part 2, a chain with rollers having rollers on both sides and a passage for the hose formed between the rollers, and a hose inserted into the passage, and a chain with rollers, and a spring provided to apply tension to the hose between it and the ramp section 2 and to generate a reaction force greater than the pushing force of the clamp section. The location of the buildings is now regulated. The distal end of the connecting body 4 is connected to the clamp portion 2, and the proximal end is engaged with the winding portion of the main body 3. In this example, the connecting body 4 is configured to pass through the bottom of the T-slot so as not to be bulky, and can supply and discharge pressure oil to and from the clamp part 2, and can transmit the force for pushing and pulling the clamp part 2. . At the base end of the connecting body 4, a roller chain engages with a sprocket-like winding section, and a hose is connected to a pressure oil supply/discharge section.

This movable clamp device 1 is arranged so that when the clamp part 2 is moved backward toward the main body 3, the retracted end position is set to the main body 3.
As shown in the figure, a guide part 16 that fits into the T-groove is provided in the main body 3, and a vertical guide part 17 is separately fixed to the bolster 5, and the guide part 17 guides the main body up and down. A guided portion 18 on the main body 8 side and a lifting cylinder 19 are provided, and are installed corresponding to the ends of the T-grooves 6 of the bolster 5, as shown in FIG. Guide section 1
7 is in the shape of a reed groove, the guided part 18 is provided in the form of a reed in the main body 3, and the vertical drive cylinder 19 is provided with a suitable metal fitting between a suitable position above the main body 3 and a suitable position below the guide part 17. It is provided through. In the state shown by the solid line in the figure, the main body 3 is raised when the cylinder 19 is extended, and when the cylinder 19 is shortened, it is lowered as shown by the imaginary line. In this lowered state, the clamp portion 2 at the rearward end of the main body 3 is located below the extended plane 5b of the upper surface 5a of the bolster 5. This is the shelter position. The state in which the main body is raised is a state in which the clamp portion 2 can advance to the clamp position.

A second embodiment is shown in FIG. In this example, the first
Using the same movable clamp device 1 as in the embodiment, its main body 3
The clamp part 2 is attached to the bolster 5 so that it can advance to the clamp position, and from that state it is rotated 45 degrees around the shaft 20 to become the retracted state shown by the imaginary line. The main body 3 is pivotally supported on the side surface of the bolster 5 by a shaft 20, and an air cylinder 21 is provided. The air cylinder 21 is provided between the bolster 5 and the main body 3 as shown. The main body 3 and the clamp part 2 in the retracted position are also located below the extended plane 5b of the upper surface 5a of the bolster 5.

A third embodiment is shown in FIG. In this example, the first
Using the same movable clamp device 1 as in the example, the bolster 5
The main body 3 rotates 90 degrees around a horizontal axis 22 provided perpendicularly to the side surface of the
It is designed to be rotated by a degree. Although details are not shown, as shown by the imaginary line in the retracted state, the clamp part 2 is rotated so that it can move forward and backward to the clamp position, and the side with the least protruding part from the main body 3 in the forward and backward direction is on the upper side. It is arranged to be displaced, and the whole is located below the extension plane 5b. In the figure, 22a is the center line of the horizontal axis 22. In this case, although the drive unit for rotational displacement is not shown, it may be manually operated, or may be driven by a gear, an electric motor, a hydraulic motor, a hydraulic or pneumatic cylinder, or the like.

A fourth embodiment is shown in FIG. In this example, the first
Using the same movable clamping device 1 as in the embodiment, the illustrated shaft 2
3 is rotated by 90 degrees, and its driving is performed by driving the clamp portion 2 forward and backward. In the figure, 26 is a bearing block fixed to the side surface of the bolster 5. The virtual line indicates the standby state.

In each of the first to fourth embodiments described above, the clamp part 2 is moved from a state in which it can advance and retreat to the clamp position to another clamp part 2.
and the main body 3 are both extended planes 5b of the upper surface 5a of the bolster 5.
The cover can also be moved to a lower evacuation position.

Therefore, when replacing the mold 14, the mold 14 is normally moved horizontally and taken in and out using the space above the bolster upper surface 5a and the extension plane 5b. The clamping device does not get in the way of loading and unloading the mold.

Although each of the above embodiments has been described with respect to the same mobile clamp device 1, the present invention is not limited to this, and any mobile clamp device that can move and hold the clamp portion from the T-groove side to the main body side can be used. It can be implemented similarly.

In addition, although the embodiment has been explained as a device for clamping a mold of a press machine, the movable clamp device can also be used as a device for clamping a workpiece using a T-groove in other machine tools. equipment can be applied.

〔Effect of the invention〕

According to this invention, since the movable clamping device is configured to be displaced to a retracted position away from a path for attaching and detaching the clamped object whose boundary is the extension surface of the predetermined clamped object mounting surface, Do not get in the way. Therefore, in order to ensure a passage that is easy to select for attaching and detaching to a predetermined attachment part of the mold or workpiece, the holes are not limited to "."

[Brief explanation of the drawing]

FIG. 1 is a partially cross-sectional schematic side view of a first embodiment of the present invention;
FIG. 2 is a partially sectional schematic side view of the second embodiment, FIG. 3 is a partially sectional schematic side view of the third embodiment, and FIG. 4 is a partially sectional schematic side view of the same embodiment. 1... Mobile clamp device, 2... Clap part, 3
...Main body, 4...Connection part, 5...Bolster (mounting part) 55a...Bolster top surface (mounting surface), 5b...
Bolster top extension surface (extension plane of mounting surface), 6...T
Groove, 16... Guide portion corresponding to the T groove (main body side clamp portion holding portion).

Claims (3)

[Claims] (1) A main body is provided at the T-groove end position of the end edge of the mounting portion where the T-groove is provided along the mounting surface of the object to be clamped, and the clamp portion is provided to the main body via a connecting body extending from the main body. In the movable clamp device configured to be driven forward and backward along the T-groove by a drive portion, the clamp portion is configured to be moved from the inside of the T-groove toward the main body side at a retreating end and held therein, A movable clamp provided to the mounting part so that the main body is displaced together with the clamp part to a retracted position out of a passage for attaching and removing an object to be clamped whose boundaries are the mounting surface of the mounting part and its extension plane. Equipment evacuation device. (2) In the device according to claim (1), the evacuation device for a movable clamp device, wherein the displacement of the main body is a linear displacement by guidance along a straight line. (3) In the device according to claim (1), the displacement device for a movable clamp device, wherein the displacement of the main body is rotational displacement about a predetermined axis.