JPH0646589Y2 - Homer Punch Position Adjuster - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a multi-stage homer in which a die and a punch are used to press-form a material. The present invention relates to a punch position adjusting sheet pile that is interposed between the punch position adjusting sheets.

(Prior Art) Referring to FIG. 3, a general structure of a punch driving unit in the above-described multi-stage homer will be described. In the ram 3 which is coupled to the small end pin 2 of the crank arm 1 and is reciprocally driven. The punch 5 is supported on the tip end of the punch 5 via the punch case 4, and the punch receiving piece 6 receives the back surface of the punch 5.
A punch position adjusting sheet pile 8 is provided between the ram 3 and the inclined receiving surface 7 on the ram 3 side. Also, the punch 5 is
In the case of a type that also uses the molded product extruding pin 9, the molded product extruding pin 9 includes the center portion of the punch 5, the center portion of the punch receiving piece 6, and the upper and lower portions formed on the sheet pile 8. It is configured such that it penetrates through the elongated hole 10 in the direction and the pin guide hole 11 provided in the ram 3, and the rear end portion contacts the tip of the pin drive lever 12 provided in the ram 3. The sheet pile 8 is provided with an adjusting screw 14 threadedly penetrating a vertically extending through screw hole 13 provided in the upper end protruding portion 8a, and the lower end of the adjusting screw 14 is fitted on the upper surface of the ram 3. The contacting piece 15 is in contact with the upper surface, that is, the contacted surface 15a. Reference numeral 16 is a punch lock screw for arbitrarily fixing the punch 5 to the punch case 4 rearward, and 17 is a die supported in the die case 18 so as to face the punch 5 concentrically. Further, 19 is a lock nut of the adjusting screw 14.

Various types of punches 5 and dies 17 are used depending on the molded product. When the punches 5 and the dies 17 are replaced or the molding conditions are changed, the fixed position of the punches 5 with respect to the punch case 4 is fixed. Must be adjusted in the axial direction.

The position adjustment work of the punch 5 is performed by the punch lock screw 16
And the adjusting screw lock nut 19 is loosened, and the adjusting screw 14 is rotated. That is, when the adjusting screw 14 is rotated in the screw-in direction, the sheet pile 8 rises along the inclined receiving surface 7 on the ram 3 side, and the lower end 8b side where the thickness of the sheet pile 8 increases increases the inclined receiving surface 7 and the punch. It enters into the space between the receiving piece 6 and pushes the punch 5 together with the punch receiving piece 6 toward the die 14. Also, adjust screw 14
When the sheet is rotated in the screw-returning direction, the sheet pile 8 descends and the thickness of the sheet pile 8 at the portion contacting the punch receiving piece 6 decreases, so that the punch receiving piece 6 and the inclined receiving surface 7 on the ram 3 side are reduced. Punch 5 and punch receiving piece 6 so that the sheet pile 8 is sandwiched by
Can be pushed backwards. Punch 5 as above
Punch lock screw 16 after adjusting the position of
Then, the punch 5 and the sheet pile 8 are fixed by screwing in the adjusting screw lock nut 19.

As described above, the sheet pile 8 is moved up and down to adjust the position of the punch 5 in the withdrawal direction. However, if the punch 5 is configured to directly display the amount of movement of the punch 5 as it moves up and down, the punch 5 Position adjustment work can be performed very efficiently and accurately. However, as a conventional means of this kind, there has been known a method in which a rotary indicator which is interlocked with the adjusting screw 14 via a chain or the like is installed on the ram 3.

(Problems to be solved by the invention) However, as the punch position adjusting sheet pile 8, for example, a sheet pile having a long hole 10 as shown in the drawing is used when a pin 9 for pushing out a molded product is used in combination, and otherwise, pressure receiving is performed. To use the sheet pile without the long hole 10 to increase the area, it can be used properly according to the situation, so if there is an interlocking mechanism between the indicator on the ram and the adjusting screw as described above, It is necessary to disassemble the interlocking mechanism at the time of replacement work of the sheet pile, remove the sheet pile together with the adjusting screw, and then assemble the interlocking mechanism again when setting a new sheet pile with the adjusting screw, and the display value of the indicator on the ram side. It is also necessary to adjust the display value of the indicator so that the relationship between the vertical position of the newly set sheet pile and the vertical position of the sheet pile is adjusted, It takes a great deal of time and effort.

(Means for Solving the Problems) In order to solve the above conventional problems, the present invention provides
A punch position adjusting sheet pile 20 is interposed between the inclined receiving surface 7 on the side of the ram 3 and the punch receiving piece 9, and the adjusting screw 23 in which the lower end portion abuts on the abutted surface 15a at the upper end portion of the ram 3 on the sheet pile 20. Is rotatably screwed, and the turning screw of the adjusting screw 23 makes it possible to move the sheet pile 20 up and down. By moving the sheet pile 20 up and down, the amount of movement of the punch 5 that comes into contact with the punch receiving piece 9 is adjusted. The punch position adjusting device for homer
20 An indicator 28 is attached to an upper end of the adjusting screw 23 by a bracket 29 so as to be located right above the adjusting screw 23, and the indicator 28 is fitted to a transmission shaft portion 26 connected from the upper end of the adjusting screw 23. The amount of rotation of the passive shaft portion 27 that receives the rotational force of the transmission shaft portion 26 while allowing relative movement of the portion 26 in the axial direction and the rotation amount of the passive shaft portion 27 that is transmitted from the transmission shaft portion 26 of the adjusting screw 23 causes the punch 5 to move. The present invention proposes a punch position adjusting device for a homer, which has a display unit 32 for displaying the amount of movement in and out.

(Operation of the device) A sheet pile including the adjusting screw 23 and the indicator 28 described above.
Just like the conventional sheet pile, 20 is fitted between the inclined receiving surface 7 on the ram 3 side and the punch receiving piece 6, and the lower end of the adjusting screw 23 is brought into contact with the contacted surface 15a on the ram 3 side. Can be used. The point that the adjusting screw 23 is rotated to move the sheet pile 20 up and down to adjust the position of the punch 5 in the retracting direction is the same as the conventional sheet pile with adjusting screw.

However, when the adjusting screw 23 is rotated to adjust the position of the punch 5, the passive shaft portion 27 of the indicator 28 is rotated in association with the rotation of the upper end transmission shaft portion 26, and the indicator is rotated.
At 28, the movement amount of the punch 5 as the sheet pile 20 moves up and down is displayed on the display unit 32. Therefore, the operator is
The position of the punch 5 can be adjusted to a desired position by rotating the adjusting screw 23 while watching the display of 28.

Since the indicator 23 is interlocked with the adjusting screw 23 while being supported by the sheet pile 20 itself, when the sheet pile 23 is replaced,
The sheet pile 20 can be attached and detached together with the adjusting screw 23 and the indicator 28, and when the sheet pile 20 is set again,
The relationship between the display value of the indicator 28 and the vertical position of the sheet pile 20 is the same.

Moreover, as the sheet pile 20 moves up and down, the indicator 28 attached via the bracket 29 also moves up and down, but the adjusting screw 23 does not move up and down because the lower end of the adjusting screw 23 is always in contact with the contacted surface 15a on the ram 3. Therefore, as the sheet pile 20 moves up and down, the upper shaft transmission shaft portion 26 of the adjusting screw 23 and the passive shaft portion of the indicator 28 are moved.
While 27 and 27 allow relative movement in the axial direction, only transmission of rotation between them is performed without any trouble.

(Effect of device) As described above, according to the punch position adjusting device of the present invention, since the indicator 28 displays the amount of movement of the punch 5 in the moving direction of the punch 5, the moving amount of the punch 5 in the moving direction of the punch 5 is displayed. Position adjustment work can be performed extremely efficiently and accurately,
Moreover, just like a conventional sheet pile without such an indicator, the sheet pile replacement work can be performed very easily, easily and efficiently. Further, when the removed sheet pile 20 is set again, the display value displayed on the display portion 32 of the indicator 28 attached to the sheet pile 20 and the vertical position of the sheet pile 20 (position of the punch withdrawal direction) are displayed. Since the relationships are the same, there is no need to adjust the display value of the indicator 28 when replacing the sheet pile. Also, from this point, before setting the sheet pile 20, the display part of the indicator 28
Adjust the vertical relative positional relationship between the sheet pile 20 and the adjusting screw 23 in advance by operating the adjusting screw 23 so that the displayed value displayed on 32 corresponds to the desired punch position. It is also possible to eliminate the adjustment work of.

(Embodiment) An embodiment of the present invention will be described below with reference to the attached FIGS. 1 and 2.

Reference numeral 20 denotes a sheet pile, which is provided with a vertically elongated hole 21 through which the molded product pushing pin 9 penetrates. The sheet pile
A projecting portion 20a protruding toward the inclined surface 22a facing the inclined receiving surface 7 on the ram 3 side is provided on the upper end portion of the ram 3, and the adjusting screw 23 is vertically threadedly penetrated into the upper projecting portion 20a. A through screw hole 24 is provided. On the upper end of the adjusting screw 23, an angular shaft-shaped power transmission shaft portion 26 is concentrically provided continuously above the rotary operation spanner hooking portion 25, and only the axial relative movement is possible on the power transmission shaft portion 26. Cylindrical passive shaft to be fitted
An indicator 28 including 27 is fixed on a bracket 29 attached to the sheet pile upper end protruding portion 20a. Reference numeral 30 is a lock plate that is screwed into the adjusting screw 23, and includes a lock bolt 31 whose lower end abuts against the upper surface of the sheet pile.

The indicator 28 is a conventionally well-known mechanical indicator that is used as a rotation speed integration calculation and the like,
For example, a commercially available digital position indicator (trade name, SIKO Digital Position Indicators, manufactured by Imao Corporation) is used, and a numerical value display unit in decimal notation of the required number of digits that interlocks with the forward / reverse rotation of the passive shaft portion 27.
Equipped with 32. Also, reset the displayed value to zero,
It is also possible to artificially adjust to any numerical value.

In a general revolution counter, the minimum digit value of the numerical value display unit 32 is incremented by 1 by one positive rotation of the passive shaft unit 27 and subtracted by one by one reverse rotation, so that the passive shaft unit 27 and the numerical value are subtracted. The transmission ratio with the display unit 32 is defined, but in the indicator 28 used here, the movement amount of the punch 5 in the moving direction, that is, the sheet pile, under the condition that the minimum digit is, for example, about 1/100 mm.
In order that the numerical display unit 32 displays the amount of horizontal movement of the vertical end surface 22b with which the punch receiving piece 6 of 20 abuts, the screw pitch of the adjusting screw 23 and the inclined surface 22 of the sheet pile 20 (the inclined receiver on the ram 3 side). The transmission ratio between the passive shaft portion 27 and the numerical display portion 32 is determined in correspondence with the inclination angle of the surface 7). In particular,
Rotate the adjusting screw 23 forward to raise the sheet pile 20 in a state where the inclined surface 22a of the sheet pile 20 and the inclined receiving surface 7 of the ram 3 are in contact with each other, and move the vertical end face 22b thereof horizontally to move forward by 1/100 mm. When this is done, the transmission ratio between the passive shaft portion 27 and the numerical display portion 32 is determined so that the minimum digit of the numerical display portion 32 is incremented by one. Of course, when the adjusting screw 23 is reversed and the sheet pile 20 is lowered, the numerical value of the numerical value display section 32 is displayed in a subtracted manner.

As shown by the phantom line in FIG. 2, the sheet pile 20 has the inclined receiving surface between the inclined receiving surface 7 on the ram 3 side and the punch receiving piece 6 as in the conventional sheet pile 8 (see FIG. 3). The sheet pile inclined surface 22a is fitted to the surface 7 in a facing direction, and the lower end of the adjusting screw 23 is brought into contact with the contacted surface 15a on the ram 3.

The point that the sheet pile 20 moves up and down by rotating the adjusting screw 23, and that the position of the punch 5 in the retracting direction can be adjusted through the punch receiving piece 6 by moving the sheet pile 20 up and down are the same as the conventional ones. Although omitted, when the adjusting screw 23 is rotated to raise and lower the sheet pile 20, the punch 5 at that time is rotated.
Since the moving amount of the moving direction of the punch 28 is displayed on the numerical display portion 32 of the indicator 28, the operator does not need to actually measure the moving amount of the end surface of the punch 5 on the die side, and the numerical display of the indicator 28 is displayed. The position of the punch 5 can be adjusted as desired by rotating the adjusting screw 23 while looking at the numerical value displayed on the section 32.

When the adjusting screw 23 is rotated to move the sheet pile 20 up and down, the indicator 28 moves up and down together with the sheet pile 20.
Is at a fixed position where the lower end abuts against the abutted surface 15a on the ram 3 side. Therefore, as the adjusting screw 23 rotates, the adjusting screw 23
The transmission shaft portion 26 on the 23 side and the passive shaft portion 27 on the indicator 28 side relatively move in the axial direction, and only rotation is transmitted between them.

There is also prepared a sheet pile having no elongated hole 21 through which the pin 9 penetrates, to which the adjusting screw 23 and the indicator 28 are attached. However, when the punch 5 that does not use the molding product pushing pin 9 is set, the long hole
Instead of the sheet pile 20 provided with 21, the sheet pile without the long hole 21 is used. When exchanging the sheet pile, the adjusting screw 23 and the indicator 28 are integrally attached to and detached from the sheet pile.

Further, for example, when the die side end surface of the punch 5 is flush with the front surface of the punch case 4, or when the sheet pile 20 is at the lower limit position, a reference state is set, and when the reference state is set, the indicator is set. By setting so that the display value of 28 becomes zero, the absolute position of the punch 5 can be displayed on the indicator 28, but if you just know the punch movement amount at the time of adjustment, It is not necessary to set a standard reference state, and if the display value is reset to zero before adjustment, the amount of punch movement that accompanies adjustment will be displayed, and the display value before adjustment can be made without performing such a zero reset. It is also possible to take note of and calculate the amount of change in the display value due to adjustment to know the amount of punch movement.

As an indicator, the rotational speed detector of the passive shaft 27,
It is also possible to use an electronic indicator composed of an arithmetic IC for calculating the amount of movement of the punch 5 from the output of the rotation speed detector, a liquid crystal for displaying numerical values, a battery power source for driving, and the like.

[Brief description of drawings]

FIG. 1 is a perspective view, FIG. 2 is a vertical sectional side view showing a usage state,
FIG. 3 is a vertical cross-sectional side view showing the structure of a conventional general punch drive unit. 5 ... punch, 6 ... punch receiving piece, 7 ... ram side inclined receiving surface, 8, 20 ... sheet pile, 9 ... molded product extruding pin, 10, 21 ...
Long holes, 14, 23 ... Adjusting screw, 15a ... Abutting surface, 22a ... Inclined surface, 22b ... Vertical end surface, 25 ... Spanner hanging part for rotating operation, 26
… Transmission shaft, 27… Passive shaft, 28… Indicator, 32…
Numerical display.

Claims (1)

[Scope of utility model registration request] 1. An inclined receiving surface 7 on the ram 3 side and a punch receiving piece 9
An adjusting screw 2 in which a punch position adjusting sheet pile 20 is interposed between the punching sheet and the sheet pile 20 and the lower end portion of the ram 3 is brought into contact with the abutted surface 15a of the upper end portion of the ram 3.
3 is rotatably screwed, and the sheet pile 20 can be moved up and down by the rotation screw of the adjusting screw 23. The vertical movement of the sheet pile 20 allows the punch 5 to move in and out of contact with the punch receiving piece 9. In the homer punch position adjusting device that is adjusted, the indicator 28 is attached to the upper end portion of the sheet pile 20 by the bracket 29 so as to be located right above the adjusting screw 23. A passive shaft portion 27 that is fitted to the transmission shaft portion 26 connected from the upper end and receives the rotational force of the transmission shaft portion 26 while allowing relative movement in the axial direction of the transmission shaft portion 26, and the transmission shaft portion of the adjusting screw 23. A punch position adjusting device for a homer, which includes a display unit 32 for displaying the amount of movement of the punch 5 based on the amount of rotation of the passive shaft unit 27 transmitted from the unit 26.