JPS625790Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a variable stroke mechanism used in a roll feed that feeds a plate to a press machine or the like.

Conventionally, the roll feed of a press machine has an eccentric shaft attached to an eccentric plate fixed to the rotating shaft of the press machine, and the eccentric shaft and the roll feed are connected by a connecting rod.The reciprocating movement of the connecting rod rotates the feed roll of the roll feed, and the plate material is It was sent to a press machine. In order to change the feed rate of the plate material, the amount of eccentricity of the eccentric shaft from the rotating shaft was adjusted on an eccentric plate to change the amount of reciprocating motion of the connecting rod.However, the rotating shaft of a press machine is located at the top of the machine. , high, making adjustment dangerous and requiring a long time.

An object of the present invention is to eliminate these drawbacks and provide a variable stroke mechanism that allows an operator to make adjustments at a convenient position while standing on the floor, and that allows for easy adjustment work. Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, the rod 1 is driven from the rotating shaft of the press machine and reciprocates in a direction nearly perpendicular to the plane of the drawing, and one end of the rod 1 is rotatably connected to a pin 2 fixed to the arm 3. ing. The arm 3 is rotatably supported at one end by a fulcrum pin 4 fixed to the body 5. The holder 6 is slidably fitted onto the swing rod 9, and a pin 6a protruding from the holder 6 is rotatably held by the arm 3.
A slider 13 is slidably provided in a long groove 14 provided in the body 5 substantially parallel to the arm 3. A holder 8 is rotatably supported on a fulcrum pin 7 fixed to a slider 13, and the other end of the holder 8 is slidably fitted onto a swing rod 9.

A pin 10 is fixed to the end of the swing rod 9, and a bearing 11 is fixed to the extension thereof. The bearing 11 is a ball bearing, and its outer ring is adapted to and guided by a guide 12 which is fixed to the body 5 and is long in the direction perpendicular to the paper plane of FIG.
The bearing 11 may be a rotatable roller on the pin 10. Further, one end portion of a friction rod 16 is rotatably held on the pin 10. A threaded rod 15 is provided at an intermediate portion in the length direction of the groove 14. One end of the threaded rod 15 is rotatably held in the fuselage body 5 while being restrained in the axial direction, and the other end is held by the slider 13. It is screwed into the screw and can be pulled out to the opposite side through the through hole of the fulcrum pin 7. When the threaded rod 15 is rotated, the slider 13 moves along the groove 14,
The fulcrum pin 7 is the center of rotation of the swing rod 9
move at the same time.

3, 4, and 5, the friction rod 16 has its upper end guided by a guide 12 by a pin 10 and a bearing 11, and its central part guided by a guide roll 25 to move up and down. A plate material is fed while being sandwiched between a drive roll 17 and a driven roll 18, which are feed rolls of a roll feed.
A friction roll 19 is fixed to the shaft of the drive roll 17, and a presser roll 20 is rotatably supported by a pin 22 movable with respect to the machine body 5 in opposition to the friction roll 19. One end of the pin 22 is supported by a ball bearing 22a fixed to the fuselage 5, and the other end is supported by a block 21 that is slidable on a stud 23 implanted in the fuselage 5 and biased toward the fuselage 5 by a spring 24. has been done. When the friction rod 16 is sandwiched between the friction roll 19 and the presser roll 20, it is pushed against the presser roll 2 by the urging force of the spring 24.
0 against the friction roll 19. Therefore, the vertical movement of the friction rod 16 causes the drive roll 17 to perform reciprocating rotational movement via the friction roll 19 without slipping due to the frictional force. Driven roll 1
8 presses in synchronization with the rotational movement of the drive roll 17;
It is designed to move up and down by repeating separation, and the board is fed while being sandwiched between both rolls.

Next, we will discuss the effect.

In FIGS. 1 and 2, the reciprocating movement of the rod 1 causes the arm 3 to reciprocate and rotate at a constant angle. The swing rod 9 is driven by the holder 6 with the fulcrum pin 7 as the center of rotation. When the threaded rod 15 is rotated to change the position of the fulcrum pin 7 from 7 to 7' in FIG. 2, the swing width of the pin 10 of the swing rod 9 gradually increases from zero to the maximum. Since the ball bearing 11 is guided and restrained by the guide 12, the swing rod 9 is guided by the holders 6 and 8 and slides in the axial direction, while its reciprocating rotational motion is converted into a linear motion that moves the pin 10 up and down. Ru. By moving the position of the fulcrum pin 7, the pin 10
The stroke of the vertical movement can be changed arbitrarily. Therefore, since the lifting stroke of the friction rod 16 changes and the rotation angle of the reciprocating rotational motion of the friction roll 19 and the drive roll 17 can be changed arbitrarily, the feed amount of the plate material can be changed arbitrarily.

As is clear from the above explanation, according to the present invention, the feed rate of the plate material can be changed by simple operation of the threaded rod, and this device is at almost the same height as the roll device and can be used while standing on the floor. It has great practical effects and advantages, such as making it easier for the operator to work, making the work safer, more reliable, and faster, and allowing the feed amount to be adjusted while the press machine is in operation.

[Brief explanation of the drawing]

Fig. 1 is a sectional plan view of the main part, Fig. 2 is a view taken in the direction of arrow A in Fig. 1, Fig. 3 is a partially sectional front view of the feed roll section, and Fig. 4 is a partially sectional view of Fig. 3 B. arrow view,
FIG. 5 is a CC sectional view of FIG. 4. 1 is a rod, 2 is a pin, 3 is an arm, 4 is a fulcrum pin, 5 is a fuselage, 6 is a holder, 6a is a pin, 7 is a fulcrum pin, 8 is a holder, 9 is a swing rod, 1
0 is pin, 11 is bearing, 12 is guide, 1
3 is a slider, 14 is a groove, 15 is a threaded rod, 16 is a friction rod, 17 is a drive roll, 18 is a driven roll, 19 is a friction roll, 20 is a presser roll, 21
is block, 22 is pin, 23 is stud, 24
25 is a guide roll.

Claims (1)

[Scope of utility model registration request] One end of it is pivotally connected to the fulcrum pin 4 of the machine body 5, and the arm 3 is driven by the rotating shaft of the press machine to swing up and down, and it slides into the horizontal groove 14 of the machine body 5 facing parallel to the arm 3. A slider 13 provided movably and whose position can be adjusted, a fulcrum pin 7 erected on the slider 13 in parallel with the fulcrum pin 4, and a fulcrum pin 7.
A holder 8 is rotatably provided at the tip of the arm 3 and has a hole perpendicular to the fulcrum pin 7; a holder 6 is rotatably provided at the tip of the arm 3 and has a hole perpendicular to the fulcrum pin 4; A swing rod 9 is slidably held in a hole in the arm 8 and parallel to the arm 3, and the holder 8 of the swing rod 9 is connected to the holder 6.
It is characterized by comprising a guide 12 that guides a pin 10 provided at the tip penetrating from the side so that it can rise and fall freely, and a friction rod 16 whose upper end is connected to the pin 10 and moves up and down to rotate the drive roll 17. variable stroke device.