JP2000246370A - Work clamp device and work processing method using device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve working efficiency by increasing the number of works which can be overlapped/clamped/processed in a plate material processing machine. SOLUTION: This device comprises upper and lower cylinders, a punch 43 formed at a bottom end of a piston rod 45 of the upper and lower cylinders, and a die 34 arranged right below the punch 43. In this case, plural works W are overlapped and inserted between the punch 43 and the die 34, and the punch 43 penetrates through each work W by means of the upper and lower cylinders so as to be engaged with the die 34. Thereby, the plural works W are overlapped and clamped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work clamping device, and more particularly, to a device for clamping a plurality of works by overlapping each other and a work processing for simultaneously processing a plurality of works in one working time using the device. About the method.

[0002]

2. Description of the Related Art Conventionally, in a plate processing machine such as a turret punch press, a blanking jer, a laser processing machine, etc., a device 57 (FIG. 6) for overlapping and clamping a plurality of workpieces has been used. It has been desired to reduce the processing time by simultaneously processing a plurality of workpieces in a short time.

In FIG. 6, a main body 55 of a work clamping device 57 is mounted on a carriage 12 of, for example, a turret punch press (FIG. 5) via a housing 56.

A lower jaw 52 is fixed to the main body 55, and an upper jaw 51 is attached to the lower jaw 52 so as to be rotatable about a shaft 54. , And upper and lower cylinders 53.

With this configuration, when the upper and lower cylinders 53 are raised, the upper jaw 51 rotates counterclockwise with respect to the shaft 54, so that a plurality of workpieces W are clamped in cooperation with the lower jaw 52. I want to

[0006]

[Problems to be solved by the invention]

[0007] In the prior art shown in FIG.
Slip stoppers 51A and 52A are formed on the first jaw 52 and the lower jaw 52, and the work W is fixed and clamped without displacement.

However, these non-slip parts 51A and 52A are
It is formed only on the upper jaw 51 and the lower jaw 52, and of the plurality of works W, only the uppermost work W and the lowermost work W can be substantially clamped.

That is, in the conventional work clamping device 57 (FIG. 6), the number of works W that can be machined by being overlapped and clamped is extremely small, resulting in a decrease in machining efficiency.

An object of the present invention is to improve the processing efficiency by increasing the number of workpieces that can be processed by being overlapped and clamped in a plate processing machine.

[0011]

According to the present invention, as shown in FIGS. 1 to 5, a vertical cylinder 48 (FIGS. 1 and 2) and a piston of the vertical cylinder 48 are provided. It has a punch 43 formed at the lower end of a rod 45 and a die 34 disposed immediately below the punch 43. A plurality of works W are inserted between the punch 43 and the die 34 in an overlapping manner. The punch 43 makes each work W
The work clamp device is characterized in that the plurality of works W are clamped by overlapping the work W by penetrating through and fitting the die 34.

Therefore, according to the structure of the present invention, when the upper and lower cylinders 48 are actuated, the piston rod 45 descends (FIGS. 1 and 2B), and a plurality of punches 43 formed at the lower end thereof are provided. Guide holes W in each work W
1 and W2 (FIG. 2 (B)) are formed and enter the inside thereof, and fit into the opening 35 of the die 34, so that all the works W are locked to the punch 43, so It is possible to increase the number of workpieces that can be processed by being overlapped and clamped in the plate processing machine,
Processing efficiency can be improved.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings according to embodiments. FIG. 1 is an overall view showing an embodiment of the present invention.

The work clamp device 13 shown in FIG. 1 is applied to, for example, a turret punch press (FIG. 5), and a housing 30 is fixed to a carriage 12 described later via a fastening portion 42 and a bolt 41. Have been.

That is, the housing 30 has a fastening portion 42, and a bolt 41 provided with a lever 40 passes through the fastening portion 42 and is screwed into the housing 30.

With this configuration, by rotating the lever 40, the clamp device 13 according to the present invention is detachable from the carriage 12.

A main body 31 is mounted on the housing 30, and a vertical cylinder 48 (FIG. 1) is built in the main body 31.

A punch 43 is formed at the lower end of the piston rod 45 of the upper and lower cylinders 48. The projecting portion 33 of the housing 30 directly below the punch 43 and corresponds to the lower jaw of a conventional work clamping device is formed on the punch 43. , Die 34
And an opening 35 is formed in the die 34.

With this configuration, the punch 43 and the die 3
4 and a plurality of works W are inserted one above the other (FIG. 2
(B)) When the upper and lower cylinders 48 are actuated, the piston rod 45 descends, and the punch 43 at the lower end thereof penetrates each work W and fits into the opening 35 of the die 34, so that the plurality of The work W can be overlapped and clamped.

For example, in a turret punch press (FIG. 5)
When a plurality of works W are carried in (Step 101 in FIG. 3), the punch 43 of the work clamp device 13 is used.
A plurality of workpieces W are inserted between the die 4 and the die 34 (step 102 in FIG. 3), and the upper and lower cylinders 48 are operated to move the punch 4
3 is lowered (step 103 in FIG. 3), the punch 43 places guide holes W1 and W2 in each work W (FIG. 2).
(B)) While forming, it enters inside and fits into the opening 35 of the die 34.

Thus, a plurality of works W can be stacked and any number of works W can be clamped.

In this case, as described above, since the punch 43 penetrates each work W, guide holes W1 and W2 are formed in a portion clamped by the punch 43 and the die 34 (FIG. 2B). As will be described later (FIG. 4), this part is discarded as a skeleton K after processing (step 109 in FIG. 3).

The remaining waste Q of the work W after the guide holes W1 and W2 are formed (FIG. 2B) is carried out through the waste hole 36.

A key 44 is provided in the middle of the piston rod 45, and the key 44
2 is inserted.

With this configuration, as the punch 43 moves up and down, the key 44 moves up and down in the key groove 32, and the up and down cylinder 48 for clamping a plurality of works W works smoothly. .

A stripper plate 47 is attached to the key 44 via a spring 46.

With this configuration, when the upper and lower cylinders 48 operate and the punch 43 penetrates each work W and fits with the die 34 (FIG. 2B), the stripper plate 47 resists the restoring force of the spring 46. By pressing the uppermost work W (FIGS. 1 and 2B) and pressing the plurality of works W as a whole, the clamping force on the plurality of works W is further increased.

Work clamp device 13 having the above configuration
Is applied, for example, to a turret punch press (FIG. 5).

A punch P and a die D are concentrically arranged on the upper turret 6 and the lower turret 7 of the turret punch press 1, and the rotating shaft 8 of the upper turret 6 and the rotating shaft 9 of the lower turret 7 have: Chains 4 and 5 are wound, and the chains 4 and 5 are wound around the drive shaft 3.

A ram striker 2 for hitting the punch P is provided on the upper frame 1 immediately above the punch P at the processing position C.

With this configuration, if the drive shaft 3 is rotated by the motor M to circulate the chains 4 and 5, the upper turret 6
And the lower turret 7 are rotated synchronously, and a die including a predetermined punch P and a die D can be selected at the processing position C.

A Y-axis guide rail 17 is laid on the lower frame 21, and a support bracket 16 is slidably connected to the Y-axis guide rail 17, and the carriage base 11 is fixed to the support bracket 16. A ball screw 14 of a Y-axis motor My provided on the upper frame 1 is screwed into the carriage base 11.

A carriage 12 is slidably coupled to the carriage base 11 via an X-axis guide rail (not shown). The carriage 12 is provided with a ball screw of an X-axis motor (not shown). The work clamp device 13 according to the present invention is detachably mounted while being screwed.

With this configuration, an X-axis motor (not shown)
Is rotated, the carriage 12 to which the work clamp device 13 is attached moves X on the carriage base 11.
When the Y-axis motor My is rotated while moving in the axial direction, the carriage base 11 moves in the Y-axis direction.

Therefore, the plurality of clamped works W are positioned at the processing position C by the punch 43 of the work clamping device 13 penetrating through each work W and fitting with the die 34 (FIG. 2B). Then, predetermined processing such as hole processing and contour cutting processing of the small product S (step 106 in FIG. 3) can be performed.

Hereinafter, the operation of the present invention having the above configuration will be described.
This will be described with reference to FIG. In this case, the work clamp device 13 is applied to a turret punch press (FIG. 5), and at least two work clamp devices 13 are used as shown in FIG.

(1) Clamping operation of a plurality of works W

First, in step 101 of FIG. 3, a plurality of works W are carried in, and in step 102, the plurality of works W are
In step 103, the upper and lower cylinders 48 are actuated to lower the punch 43. In step 104, the punch 43
The plurality of works W are clamped by the cooperation of the die and the die 34.

That is, initially (FIG. 2A), the punch 43 of the work clamping device 13 is raised, and a gap is formed between the punch 43 and the die 34.

When a plurality of works W are carried into the processing table 10 of the turret punch press (FIG. 5) by, for example, the work carrying means, the plurality of works W are moved between the punch 43 and the die 34. Insert

In this state, when the upper and lower cylinders 48 are operated, the piston rod 45 descends (FIG. 2B), and the punch 43 formed at the lower end thereof penetrates each work W and opens the opening 35 of the die 34. Mates with

Thus, each work W has a guide hole W1,
All the works W are locked to the punch 43 that has entered the inside while forming W2 (FIG. 2B).

Further, when the punch 43 is fitted with the die 34, the stripper plate 47 attached to the key 44 is attached to the uppermost work W against the restoring force of the spring 46 (FIG. 1, FIG. 2 (B)) A plurality of workpieces W in contact with each other
Since the whole is pressed, a stronger clamping force acts to clamp a plurality of works W.

Accordingly, the displacement is eliminated, the number of workpieces that can be processed by being overlapped and clamped can be increased, and the processing efficiency can be improved.

During this time, as the punch 43 descends (FIG. 2B), the key 44 moves along the key groove 32 (FIGS. 1 and 2), so that the operation of the upper and lower cylinders 48 also proceeds smoothly. Will be

(2) Processing operation of a plurality of works W

Next, in step 105 of FIG.
Moving a plurality of workpieces W to the processing position C, step 1
At 06, the hole processing and the contour cutting processing of the small product S are performed.

That is, by driving the X-axis motor (not shown) and the Y-axis motor My (FIG. 5), the carriage 12
Move in the X-axis direction, and the carriage base 11 moves in the Y-axis direction.

As a result, the plurality of works W clamped by the work clamping device 13 (FIG. 5) attached to the carriage 12 can be moved to the processing position C. At this processing position C, predetermined processing, for example, Hole processing and contour cutting of the small product S are performed (FIG. 4).

That is, when the punch 43 of the work clamp device 13 penetrates each work W, the guide hole W
1 and W2 are formed (FIGS. 2B and 4).

At the processing position C (FIG. 5), a region other than the portion where the guide holes W1 and W2 are formed is positioned between the upper turret 6 (FIG. 5) and the lower turret 7, and the ram striker is positioned. 2. A small product S having an outline R (FIG. 4) formed around the punch P by beating the punch P
Hole cutting and contour cutting.

Then, in step 107 of FIG.
It is determined whether or not this processing has been completed. If the processing has not been completed (NO), the same operation is repeated. If completed (YES), in step 108, the small products S are carried out and accumulated, and in step 109, In, the skeleton K is carried out and accumulated.

That is, as shown in FIG. 4, the guide holes W1,
In the area other than the clamp portion where W2 is formed, when the hole processing and the contour cutting processing of the small product S are all completed, the small product S is unloaded by, for example, a work unloading unit, and placed on a product pallet. Collect.

Then, after all the small products S have been carried out and accumulated, the punch 43 that has clamped the plurality of works W is lifted (FIG. 2A) and separated from the die 34.

Thus, the clamp portion in which the guide holes W1 and W2 are formed is released.

In this state, the remaining clamp portion is taken out as a skeleton K (FIG. 4) by, for example, a work carrying-out means and accumulated on a skeleton pallet.

In the above embodiment, the case where the present invention is applied to a turret punch press (FIG. 5) has been described in detail. However, the present invention is not limited to this, and the present invention is not limited to this. The present invention is also applied to a king jewel, a laser beam machine, and the like, and it is needless to say that the same effect is obtained.

[0058]

As described above, according to the present invention, a work clamping device includes an upper and lower cylinder, a punch formed at the lower end of a piston rod of the upper and lower cylinder, and a die disposed immediately below the punch. Then, a plurality of workpieces are stacked and inserted between the punch and the die, and the punch penetrates each workpiece by the upper and lower cylinders and is fitted to the die.
When the upper and lower cylinders are actuated, the piston rod descends, and the punch formed at the lower end of the upper and lower cylinders forms a guide hole in each of the plurality of workpieces. Since it enters the inside while forming and fits into the opening of the die, all the workpieces will be locked by the punch, so that any number of sheets will not shift, and in the plate material processing machine, The number of workpieces that can be processed can be increased, and the technical effect of improving the processing efficiency is achieved.

[0059]

[Brief description of the drawings]

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

FIG. 2 is a side view of FIG.

FIG. 3 is a flowchart illustrating the operation of the present invention.

FIG. 4 is an operation explanatory view of the present invention.

FIG. 5 is a diagram showing an application example of the present invention.

FIG. 6 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Carriage base 12 Carriage 13 Clamping device 30 Housing 31 Main body 32 Keyway 33 Housing projection 34 Die 35 Opening 36 Casing hole 43 Punch 44 Key 45 Piston rod 46 Spring 47 Stripper plate 48 Upper and lower cylinder W Plural workpieces W1, W2 Guide hole

Claims (5)

[Claims] An upper and lower cylinder, a punch formed at a lower end of a piston rod of the upper and lower cylinders, and a die disposed immediately below the punch, wherein a plurality of works are stacked between the punch and the die. A work clamping device, wherein the plurality of works are overlapped and clamped by inserting a punch through each work by means of an upper and lower cylinder and fitting into a die. 2. The work clamping device according to claim 1, wherein the punch enters the work while forming a guide hole in each work, and fits into an opening of a die. 3. The work clamp device according to claim 1, wherein a key is provided in the middle of said piston rod, and said key is inserted into a key groove facing the key. 4. The work clamp device according to claim 3, wherein a stripper plate is attached to the key via a spring. 5. Using at least two of the work clamping devices according to claim 1, (1) moving a plurality of works overlapped and clamped by the punch and the die to a processing position; (2) A step of performing predetermined processing on a plurality of workpieces moved to the processing position and other than the above-mentioned overlapped and clamped area; and (3) unloading / accumulating products processed by the predetermined processing. (4) separating the product from the die by raising the punch after the product is carried out and accumulated, releasing the part that has been overlapped and clamped, and carrying out and accumulating the product as a skeleton. Work processing method.