JP2539591B2 - Work clamp device for punching press - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a work clamp device of a punching press machine for clamping a work on a moving rail in the punching press machine.

[0002]

2. Description of the Related Art A conventional work clamp device for a punching press machine, as shown in FIGS.
The moving rail 32 slidably attached to the rail receiving base 43 of the rail base 42 of the punching mechanism unit 2 installed on
A U-shaped clamp main body 34 is attached to a mounting plate 33 which is positionally adjustable, and a screw rod 37 is screwed from below into a female screw portion 36 provided in a lower plate portion 35 of the clamp main body 34. The pressing plate 38 rotatably attached to the upper end of the
The upper surface of the clamp body 0 is clamped by being matched with the lower surface of the upper plate portion 39 of the clamp body 34.

[0003]

However, in this conventional one, the screw rod 3 for vertically moving the pressing plate 38 is used.
The handle 40 for rotating 7 is the clamp main body 3
4, the handle 40 is projected from below the lower plate portion 35 of the rail 4, so that when the moving rail 32 is moved to move the work 50 to a predetermined position, the handle 40 is moved to the rail base 4 as shown in FIG.
2. There was a problem that accurate positioning could not be performed due to interference with the base 31 or the work support arm 41 and the like.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a clamp box of each clamp device body is attached to a clamp device body that is positionally adjustable on a moving rail. Of the link rod, in which the fixed chuck portion is provided above and the movable chuck portion facing the fixed chuck portion is provided below the movable chuck portion, and the base end portion of the movable chuck portion is axially supported by the rear portion of the clamp box. It is characterized in that it can be moved up and down by rotating a screw rod with a handle, which is supported at the tip and the link rod is screwed into a female screw portion provided on the top plate portion of the clamp box.

[0004]

In this type of clamp device, the clamp device main body, which is mounted on the moving rail so as to be positionally adjustable, has the fixed chuck portion provided on the upper side and the movable chuck portion provided on the lower side, and the workpiece is clamped by the movable chuck. The link rod that supports the base end of the part with the tip that pivotally supports the rear part of the clamp box moves up and down by the turning operation of the screw rod with a handle that is screwed into the female screw part provided on the top plate of the clamp box. Since the movable rod is movable, the tip of the link rod is raised by rotating the screw rod upward so that the movable chuck portion is pushed up and clamped by the fixed chuck portion. The handle for rotating the is located above the top of the clamp box, and the handle moves without being interfered by the base or work support arm. The workpiece is clamped in the clamping device main body of the rail and moved to the predetermined position is capable of performing drilling required for a given position of the workpiece.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS.
Will be described in more detail. In FIG. 1, 1 is a base, and 2 is a punching mechanism part in which a fixed lower mold part 3 installed on the base 1 and a movable upper mold part 4 are arranged. Reference numeral 5 is a moving rail provided at a position facing between the lower die portion 3 and the upper die portion 4 of the punching mechanism portion 2, and the moving rail 5 is a lower die portion 3 mounted on the base 1. On a rail base 3b that is continuously provided behind the underframe 3a, a rail support 6 whose front-back position can be adjusted is slidably attached to the left and right.

Reference numerals 7 and 7 denote a clamp device main body for holding the workpiece 50 on the movable rail 5 from both sides. The clamp device main body 7 is provided in a guide groove 5a provided in the movable rail 5 on the rear surface of the mounting plate portion 8. The projection is provided so that it can be slidably fitted and can be fixed by a lock handle 9 provided on the mounting plate portion 8 so as to be adjustable in position on the moving rail 5. Reference numeral 10 denotes a clamp box provided on the front surface of the mounting plate portion 8. The clamp box 10 has a fixed chuck portion 11 provided above the surface side of the opposing clamp device body 7 and faces the fixed chuck portion 11 below. The movable chuck portion 12 is provided.

Reference numeral 13 is a link rod for moving the movable chuck portion 12 up and down. The link rod 13 is housed in the clamp box 10 and has its base end pivotally supported at the rear portion of the clamp box 10 and its tip end. It supports the base end portion of the movable chuck portion 12. That is, the elongated hole 16 penetrating to the tip side of the link rod 13 is fitted to the pin 15 projecting on the side surface of the elevating plate 14 stretched on the back surface of the movable chuck portion 12, and the link rod 13 has its base end. It is assumed that the movable chuck portion 12 can be moved up and down when the tip side moves up and down around the center. 17
Is a screw rod for moving the link rod 13 up and down, and the screw rod 17 is screwed into a female screw portion 18 provided on the top plate portion 10a of the clamp box 10 and is a handle provided on the upper end of the screw rod 17. 19 is rotated to move back and forth, the lower end of the screw rod 17 is rotatably attached to the link rod 13, and the screw rod 17 is rotated upward to move the link rod 13 upward to move the movable chuck. The part 12 is raised and the work 50 is clamped by the fixed chuck 11.

As described above, in the case where the lower end of the screw rod 17 is rotatably attached to the link rod 13, the collar plate portion 20 is stretched around the lower end periphery of the link rod 13 as in the embodiment. The lower end surface of the link rod 13 may be held on the upper surface of the collar plate portion 20, or the lower end of the screw rod 17 may be formed in a spherical shape to form the ball receiving shaft portion in the link rod 13. Furthermore, the position where the screw rod 17 rotatably attaches the link rod 13 is from the base end side of the link rod 13 so that the movable chuck portion 12 can be moved even if the screw rod 17 moves back and forth for a short distance.
It is assumed that the work 50 can be attached / detached in a short time by increasing the vertical movement of the screw rod 17 and reducing the rotation operation of the screw rod 17. That is, in the embodiment, when the length on the link rod 13 side is set to 5, the rotatably mounted position is a ratio of 1 to 4 from the base end side of the link rod 13 and the movable chuck portion 12 is It is assumed that the lifting amount is four times the lifting amount of the screw rod 17. In addition, the intermediate position of the link rod 13 is pivotally supported and the base end of the link rod 13 is moved up and down by the forward and backward movement of the screw rod 17, and when the screw rod 17 is lowered, the distal end of the link rod 13 is moved upward to move the movable chuck part. It may be clamped by 12.

Reference numeral 21 is a guide groove for vertically moving the movable chuck portion 12, and in the guide groove 21, the pin 15 projecting from a side surface of an elevator plate 14 stretched on the back surface of the movable chuck portion 12 is provided. When the tip of the movable rod 12 and the guide pin 22 projecting above the pin 15 are fitted and the tip of the link rod 13 is moved up and down, the movable chuck portion 12 moves up and down without tilting. Reference numerals 23 and 23 denote work supporting arms attached to the base 1, which assist the holding of the clamp device 7 when the work 50 is large.

The thus constructed device is a clamp device main body 7, which is mounted on the moving rail 5 so that the position thereof can be adjusted according to the size of the work 50 such as a box door used for a distribution board, a control board, or the like. 7, the movable chuck portion 12 of the clamp device body 7 is lowered, and the movable chuck portion 12 supports the corner portion of the work 50. Next, the handle 19 provided on the upper end of the screw rod 17 screwed into the female screw portion 18 provided on the top plate portion 10a of the clamp box 10 of the clamp device body 7 is rotated to move the screw rod 17 upward. For example, the link rod 1 housed in the clamp box 10 has its base end pivotally supported on the rear part of the clamp box 10 and supports the base end of the movable chuck portion 12 at its tip.
The tip of 3 rises to push up the movable chuck portion 12 to match the upper surface of the work 50 with the lower surface of the fixed clamp 11 and clamp the work 50 accurately.

When the work 50 is clamped by the clamp device main body 7 as described above, the moving rail 5 is moved so that the hole-drilling portion of the work 50 faces the upper part of the lower mold part 3 of the punching mechanism part 2. It suffices to lower the movable upper mold part 4 to open a predetermined hole. However, according to the present invention, the handle 19 of the screw rod 17 for moving the movable chuck part 12 of the clamp device body 7 up and down is the clamp device. Since it is located above the top plate portion 10a of the clamp box 10 of the main body 7, the operability is good, and when the moving rail 5 is moved, it is interfered with by the rail base 3, the base 1, the work support arm 23, or the like. It is something that can be done accurately without any.

[0012]

As is apparent from the above description, the present invention provides that the handle of the screw rod for moving up and down the movable chuck portion of the clamp device main body is located above the top plate portion of the clamp box of the clamp device main body. The operability is good, and the work can be accurately moved to a predetermined position without the bundle being interfered by the base or the like. Therefore, the present invention greatly contributes to industrial development by solving the problems of the work clamp device of the conventional punching press machine.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway front view showing a main part of an embodiment of the present invention.

FIG. 3 is a partially cutaway front view showing an essential part of an embodiment of the present invention in a different mode.

FIG. 4 is a perspective view showing a conventional example.

FIG. 5 is a perspective view showing a main part of a conventional example.

FIG. 6 is a front view showing a main part of a conventional example in a different mode.

[Explanation of symbols]

 5 Moving Rail 7 Clamping Device Main Body 10 Clamp Box 10a Top Plate Part 11 Fixed Chuck Part 12 Movable Chuck Part 13 Link Rod 17 Screw Rod 18 Female Thread Part 19 Handle

Claims (1)

(57) [Claims] 1. A clamp device main body (7), (7) mounted on a movable rail (5) so that its position can be adjusted, and the clamp device main body (7) is mounted above the opposing side of the clamp box (10). A fixed chuck portion (11) is provided and a movable chuck portion (12) facing the fixed chuck portion (11) is provided below the base end portion of the movable chuck portion (12) at the rear of the clamp box (10). A handle (19) that is supported by the tip of a link rod (13) that is pivotally supported by the above, and that the link rod (13) is screwed into a female screw portion (18) provided on the top plate portion (10a) of the clamp box (10). Attached screw rod (1
A work clamp device for a punching press machine, which can be moved up and down by the rotating operation of 7).