JPH0570719U - Leveler for press - Google Patents

Abstract

(57) [Summary] [Purpose] To have a release function and to facilitate and speed up cleaning and maintenance. [Structure] An upper frame (22) having a plurality of upper work rolls (26) mounted thereon and a lower frame (27) having a plurality of lower work rolls (28) mounted thereon, each upper work roll (26) In the press leveler (21) for correcting the plate material supplied to the press with each lower work roll (28) in a clamped state, the upper frame (22) is connected to the support shaft (2
3) A bracket (5) that is mounted so as to be rotatable by the urging force of a spring (56) and is rotated by a cylinder device (57).
The release cam (54) attached to 2) allows the vertical movement of the cam follower (55) attached to the upper frame (22) to perform the clamp operation and the release operation, and the release operation is performed by the roll opening mechanism (60). The cam (5) by pulling down the entire cylinder device (57)
By releasing the engagement between 4) and the cam follower (55),
The upper frame (22) can be opened by the biasing force of the spring (56).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a leveler for a press. In particular, it relates to a leveler in which a roll opening mechanism for upper and lower work rolls and a release mechanism for upper work rolls are integrally formed.

[0002]

[Prior Art]

 The outline of the press leveler (121) is shown in FIG. In the figure, an upper frame 122 having a plurality of upper work rolls 126 mounted thereon is attached to a machine frame 101 via a rod 129 and a guide rod 102 so as to be vertically movable. Further, the lower frame 127 having the plurality of lower work rolls 128 mounted thereon is fixedly attached to the machine frame 101. Therefore, the plate material W can be corrected by applying a predetermined amount of reduction to the upper frame 12 and rotating both the work rolls 126 and 128.

A roll feeder 131 as shown in FIG. 3, for example, is provided on the downstream side of the leveler 121. This roll feeder 131 is composed of an upper roll 132 and a lower roll 133 and intermittently feeds the straightened plate material to the press 100 according to its work cycle. In some cases, the leveler 121 and the roll feeder 131 are integrated into a leveler feeder.

By the way, in the press 100, when the pilot pin 110 is inserted into the guide hole of the plate W to adjust the relative position between the plate W and the mold, for example, the lower roll 133 is released. This is for ensuring the degree of freedom in the flow direction of the plate material W. The release mechanism 140 for this purpose comprises, for example, as shown in FIG. 3, a cylinder device 141 and a torque device 145. The torgu device 145 is formed by connecting a first link 146 for rotating and holding the lower roll 133 and a second link 148 whose base end is rotatably supported by a pin 149 with a top (joint) 147.

Therefore, by setting the piston 142 in the dotted line state, the lower roll 133 can be pushed up to be in the clamped state. On the other hand, when the top 147 is pulled leftward in the figure by the piston rod 147 in the solid line state, the lower roll 133 is unclamped and the release operation of separating the upper roll 132 by a predetermined amount can be performed.

Here, when the roll feeder 131 performs the release operation, the leveler 121 also needs to perform the release operation, but the upper frame 122 including the respective upper work rolls 126 is extremely large and heavy. Conventionally, the leveler 121 does not operate the release operation. That is, a loop control mechanism is generally provided between the leveler 121 and the roll feeder 131 so as to secure a margin for the plate material W.

[0007]

[Problems to be solved by the device]

 However, at present, when further miniaturization is desired, it is difficult to allow a large loop control mechanism itself between the two 121 and 131. In other words, there is a strong demand for the development of levelers that have a release function.

Further, the conventional leveler 121 adjusts the pressing amount according to the change in the thickness of the plate material W, but the vertical movement amount of the upper work roll 126 at that time is small. Therefore, dust and oil adhering to the upper and lower work rolls 126 and 128 can be wiped through a cloth or the like, but the adhered metal powder cannot be removed. Therefore, scratches and indentations are transferred to the plate material W, which causes defective products. On the other hand, the work rolls 126 and 128 may be scratched by the edge of the material W.

That is, the metal powder adhered to the work rolls 126 and 128 and the scratches on the work roll itself can be removed and corrected with a grindstone or the like, but the opening amount between the work rolls 126 and 128 is very small, so maintenance is easy. Can not be done. Therefore, in order to perform the removal and correction work, as in the work roll replacement work, it is necessary to perform a laborious and labor-intensive work such as pulling the entire upper frame 122 upward and carrying it out to another place if necessary. Moreover, since this work takes a long time, the operating rate of the press line is significantly reduced.

An object of the present invention is to provide a press leveler having a release function and capable of cleaning and maintenance easily and quickly.

[0011]

[Means for Solving the Problems]

 The press leveler according to the present invention has an upper frame on which a plurality of upper work rolls are mounted and a lower frame on which a plurality of lower work rolls are mounted, and clamps each upper work roll and each lower work roll. In the press leveler that straightens the plate material supplied to the press in this state, a cam follower is provided at one end of the upper frame, and the other end is rotatably attached to the machine frame via a support shaft, and the upper frame is lowered. A spring for tilting the entire upper frame around the support shaft by urging the upper frame is provided, and a release cam that engages with the cam follower is attached to one of the double-headed brackets rotatably mounted on the machine frame. The release driving cylinder device is connected to the other side, and the release driving cylinder device is mounted at a distance sufficient to separate the cam from the cam follower. The whole is characterized in that a roll opening mechanism formed such that it can be pulled downward.

[0012]

[Action]

 In the present invention having the above-mentioned configuration, the cam of the bracket rotatably mounted on the machine frame constrains the cam follower of the upper frame against the biasing force of the spring, so that the upper and lower work rolls can be clamped. it can.

When the release driving cylinder device is actuated and the bracket is slightly rotated, the cam and the cam follower are displaced from each other. Therefore, one end of the upper frame is pushed up by the urging force of the spring, so that the upper frame as a whole tilts about the support shaft on the other end. In other words, the upper work roll can be separated from the lower work roll to perform the release operation in the unclamped state. After that, if the bracket is returned to its original position, the cam pushes the cam follower downward, and the upper and lower work rolls can be clamped.

On the other hand, when the lever is operated by using the roll opening mechanism and the entire release cylinder device is pulled down, the bracket is pivoted so that the cam is disengaged from the cam follower. Therefore, since there is nothing that obstructs the opening between the upper work roll and the lower work roll, cleaning and maintenance can be performed easily and quickly. After maintenance, both work rolls can be immediately returned to the clamped state by operating the roll release mechanism in reverse and pushing up the release drive cylinder device to engage the cam with the cam follower.

[0015]

【Example】

 An embodiment of the present invention will be described below with reference to FIG. The leveler 21 in the present embodiment constitutes the leveler feeder 10 together with the roll feeder 31 on the downstream side, and is provided with the release mechanism 50 and the roll opening mechanism 60.

First, as an overall configuration, the pinch roll mechanism 11, the leveler 21, and the roll feeder 31 are arranged in this order from the upstream side to the downstream side in the flow direction of the plate material (from left to right in FIG. 1). It is installed and is covered with the cover 5 as a whole. Further, the upstream guide plate 2 and the downstream guide plate 3 are arranged outside the cover 5, so that the position of the plate member in the width direction can be regulated.

The leveler 21 includes an upper frame 22 having a plurality of upper work rolls 26 and a lower frame 27 having a plurality of lower work rolls 28. The other end of the upper frame 22 is rotatably attached to the machine frame 1 via a support shaft 23, and the lower frame 27 is fixedly attached to the machine frame 1 below. The upper and lower work rolls 26, 28 are rotationally driven by a drive device 41 including a motor 42, a chain 43, a tension roller 44 and the like.

A cam follower 55 is fixed to one end 24 of the upper frame 22, and is urged by a spring 56 from the lower side. Therefore, unless the cam follower 55 is positionally restrained by the cam 54, which will be described later in detail, the entire upper frame 22 is tilted about the support shaft 23, and the space between the upper work roll 26 and the lower work roll 28 can be largely opened. It

Next, the pinch roll mechanism 11 includes an upper pinch roll 12 and a lower pinch roll 13. The upper pinch roll 12 is rotatably supported by a lever 16 which is rotatably supported by a pin 15 on a lower end 25 of an upper frame 22, and is attached downward by a spring 14 provided between the upper pinch roll 12 and an upper end protrusion 27. It is energized. Both the upper pinch roll 12 and the lower pinch roll 13 rotatably held by the machine frame 1 are rotated by the power of the drive unit 41. Reference numeral 17 is a material guide.

On the other hand, the roll feeder 31 is composed of an upper roll 32 and a lower roll 33, and is rotationally controlled by the power of the drive device 41. Also, the release operation is timely performed.

Here, the release mechanism 50 of the leveler 21 is composed of the spring 56, the double-headed bracket 52, the release driving cylinder device 57, etc., and if the piston rod 58 is pulled down (RE) in FIG. Release operation, clamp operation can be done by pushing upward (CL).

That is, the bracket 52 is attached to the machine frame 1 so as to be rotatable by the pin 51, and the release cam 54 is attached to one end thereof. A piston rod 58 is rotatably connected to the other end via a pin 53. The lower end 59 of the cylinder device 57 is attached to a lever 62 via a pin 61 forming a roll opening mechanism 60.

Here, in FIG. 1 showing that the upper work roll 26 and the lower work roll 28 are in a clamped state, the release cam 54 has a form inclined to the upper right. Therefore, in this clamped state, the upward position of the cam follower 55 can be restrained. Further, if the bracket 52 is rotated counterclockwise around the pin 51, the cam follower 55 can be allowed to move upward while being engaged (line contact) with the cam 54.

That is, the upper frame 22 can be tilted about the support shaft 23 by pushing up one end 24 of the upper frame 22 by the urging force of the spring 56. That is, a release operation is performed in which each upper work roll 26 is separated from each lower work roll 28 in accordance with the downward movement amount Δ of the piston rod 53. The upper pinch roll 12 is also separated from the lower pinch roll 13.

On the other hand, in the roll opening mechanism 60, the entire cylinder device 57 for release drive is rotated largely in the counterclockwise direction in FIG. 1 with the bracket 52 around the pin 51 so that the release cam 54 is moved by the cam follower. It is constructed so that it can be pulled down until it comes off from 55.

That is, the base end portion of the lever 62 is rotatably supported by the support member 2 fixed to the machine frame 1 by the pin 63, and the handle 62L side is supported by the spacer 65. The spacer 65 is fixed to the machine frame 1 with bolts 64 and is removable. Therefore, if the bolt 64 is loosened and pulled out to remove the spacer 65, the grip 62 L is pulled down, so that the entire release drive cylinder device 57 is pulled down largely (in the OP direction).

The height of the spacer 65 is selected so that the upper and lower work rolls 26 and 28 can be properly clamped when the piston rod 58 of the cylinder device 57 is protruded by Δ. ..

Next, the operation of this embodiment will be described. If the plate material is passed through the pinch roll mechanism 11, the leveler 21, and the roll feeder 31 and the drive device 41 is activated in the clamped state shown in FIG. 1, the plate material can be straightened and supplied to the rightward press.

Here, when the release command is given, the cylinder device 57 forming the release mechanism 50 operates, and the piston rod 58 is pulled down in the RE direction by Δ shown in FIG. Then, the bracket 52 rotates counterclockwise around the pin 51, and the release cam 54 allows upward movement of the cam follower 55 while being in line contact with (engaged with) the cam follower 55.

Therefore, since the one end side 24 is biased upward by the spring 56, the upper frame 22 pivots clockwise about the support shaft 23 on the other end side and tilts. That is, the release operation is performed to separate the upper work roll 26 from the lower work roll 28. The upper pinch roll 12 is also pulled away from the lower pinch roll 13 and the release operation is performed. Of course, the upper feed roll 32 is also released by a dedicated release device.

After that, when there is a clamp command, the cylinder device 57 pushes up the piston rod 58 by Δ in the CL direction. Since the bracket 52 rotates in the clockwise direction, the cam 54 pushes down the cam follower 55 against the biasing force of the spring 56. That is, the upper frame 22 can be rotated in the counterclockwise direction about the support shaft 23, and the upper and lower work rolls 26 and 28 can be clamped. Therefore, the leveler 21 can be released only by ON / OFF-driving the cylinder device 57 for release drive in a timely manner.

On the other hand, at the time of cleaning / maintenance, after stopping the drive device 41, the bolt 64 is loosened, and the lever 62 and the spacer 65 are pulled out and the spacer 65 is removed. Then, the handle 62L is pulled down. Since the lever 62 rotates about the pin 63 in the counterclockwise rotation direction, the entire cylinder device 57 can be largely pulled down in the OP direction. Then, the bracket 52 pivots counterclockwise largely around the pin 51, and the cam 54 is disengaged from the cam follower 55. Therefore, the upper frame 22 is largely rotated in the clockwise direction by the urging force of the spring 56, and the space between each upper work roll 26 and each lower work roll 28 can be largely opened. Therefore, cleaning and maintenance can be performed easily and quickly.

After the maintenance is completed, the release cam 54 is engaged with the cam follower 55 by pushing up the cylinder device 57 with the lever 62. Then, by setting the spacer 65 and fixing it together with the lever 62 with the bolt 64, the leveler 21 can be returned to the clamp state.

Therefore, according to this embodiment, the upper frame 22 is rotatably attached by the support shaft 23, the cam follower 55 is provided on the one end side 24 thereof, and the release which is engageable with and separable from the cam follower 55. A release mechanism 50 including a bracket 52 having a cam 54 for rotation and rotatable by a pin 51, a cylinder device 57 for rotating the bracket 52, and a spring 56 for urging the upper frame 22 upward, and a lever 62. Since the release driving cylinder device 57 including the spacer 65 and the like is provided with a roll opening mechanism 60 formed so as to be able to be greatly lowered downward, the leveler 21 itself can be released and cleaning and maintenance are easy.・ Easy and quick.

Since the leveler 21 itself can be released, it is not necessary to provide a large loop control mechanism between the leveler 21 and the roll feeder 31, so that the size can be greatly reduced.

Further, since the upper frame 22 is configured to be rotated around the support shaft 23 by the urging force of the spring 56, it is possible to easily open the large and heavy upper frame 22, thereby reducing labor and time. Can be significantly reduced. Therefore, it is possible to improve the operation rate of the press and supply a highly accurate plate material.

Further, since the roll opening mechanism 60 is configured integrally with the release mechanism 50, it is easy to handle and the equipment cost can be reduced.

Although the roll opening mechanism 60 is configured to include the lever 62, the spacer 65 and the like in the above embodiment, it may be implemented by using a cylinder device or the like. Further, since the upper frame 22 is rotatably mounted on the support shaft 23, it is possible to easily attach a push-up cylinder device or a crane to make it open further.

[0039]

[Effect of the device]

 According to the present invention, the upper frame is mounted so as to be rotatable around the support shaft by the biasing force of the spring, and the release cam mounted on the bracket rotated by the cylinder device is used for the vertical direction of the cam follower mounted on the upper frame. Clamp operation and release operation can be performed by allowing the movement, and the roll release mechanism largely pulls down the entire release drive cylinder device to release the engagement between the release cam and the cam follower, and the upper frame is moved to the spring. Since the opening is performed by the biasing force, the release operation can be performed on the leveler itself, and the space between the upper and lower work rolls can be largely opened. Therefore, it is possible to reduce the size and cost of the press plate supply device as a whole and to perform cleaning and maintenance easily and quickly.

[Brief description of drawings]

FIG. 1 is a partially sectional side view showing an embodiment of the present invention.

FIG. 2 is a diagram for explaining a conventional leveler.

FIG. 3 is a diagram for explaining a conventional roll feeder and release device.

[Explanation of symbols]

 1 Machine Frame 2 Supporting Material 10 Leveler Feeder 11 Pinch Roll Mechanism 12 Upper Pinch Roll 13 Lower Pinch Roll 21 Leveler 22 Upper Frame 23 Spindle 24 24 One End Side 26 Upper Work Roll 27 Lower Frame 28 Lower Work Roll 31 Roll Feeder 32 Upper Roll 33 Lower roll 41 Drive device 42 Motor 50 Release mechanism 51 pin 52 Double head bracket 53 Pin 54 Release cam 55 Cam follower 56 Spring 57 Cylinder device 58 Piston rod 60 Roll release mechanism 61 pin 62 Lever 62L Handle 64 Bolt 65 Spacer

Claims (1)

[Scope of utility model registration request] 1. An upper frame having a plurality of upper work rolls mounted thereon and a lower frame having a plurality of lower work rolls mounted thereon, each upper work roll and each lower work roll being supplied to a press in a clamped state. In a press leveler for straightening a plate material, a cam follower is provided at one end side of the upper frame, and the other end side is rotatably attached to a machine frame via a support shaft, and the upper frame is urged from below to move upward. A spring for tilting the entire frame around the support shaft is provided, and a release cam that engages with the cam follower is attached to one of the double-headed brackets rotatably mounted on the machine frame, and the release driving cylinder is attached to the other side. The device for driving the release driving cylinder device, and further for pulling the release driving cylinder device downwardly by a distance sufficient to separate the cam from the cam follower. Levelers for press, characterized in that a roll opening mechanism formed to allow.