Safety working platform for shearing process

Abstract

The utility model relates to the shearing operation of non-ferrous metal, concretely is a kind of shearing process tool setting, tool changing safety working platform.Solve the current disc shears to carry out tool changing, tool setting operation, and the technical problem that operation space is small and unsafe.A kind of shearing process tool setting, tool changing safety working platform, including the edge material pit being located between disc shears and conveying equipment;Edge material pit is equipped with the flap work platform with horizontal pose and vertical pose by the drive mechanism drive;The front and back sides of edge material pit are equipped with protective door, one of protective door is used as protective interlock door, and the opening and closing action of the protective interlock door is interlocked with the horizontal, vertical pose of flap work platform and is realized interlock.The utility model designs flap work platform at the intermediate place of disc shears and edge material pit, can be conveniently tool setting, tool changing, guarantee the security of operation, can also guarantee that the edge material of shearing enters edge material pit and is packed successfully.

Description

Technical Field

[0001] This utility model relates to the shearing operation of non-ferrous metals, specifically a safe working platform for tool setting and changing during the shearing process. Background Technology

[0002] Before shearing production in non-ferrous metals, the disc shears undergo blade changes and alignment according to the required width of the strip to be produced. An edge material pit is installed between the shearing frame and the conveyor to collect the sheared edge material. Due to space limitations, currently, operators must prevent falling into the edge material pit during blade changes and alignment, and the work area is small, making the operation very inconvenient.

[0003] Specifically, the edge material pit is located where the operator stands when changing the cutter. Currently, a metal plate is used, and when a cutter needs to be changed, the metal plate is lifted or hoisted over, which is very troublesome. Later, the edge material pit was made into a grid shape with steel bars, so that the operator can stand and the edge material can fall directly from the gaps in the grid. However, after implementation, it was found that the edge material does not fall smoothly and often gets tangled in the grid. Utility Model Content

[0004] This invention addresses the technical problem of limited and unsafe working space during blade changing and setting operations in current disc shears by providing a safe working platform for blade setting and changing during the shearing process.

[0005] This utility model is achieved by the following technical solution: a safe working platform for cutting and changing tools in a shearing process, including a side material pit located between the shearing machine frame and the conveying equipment; the side material pit is equipped with a flip-plate working platform with horizontal and vertical positions driven by a drive mechanism; protective doors are provided on both the front and rear sides of the side material pit, one of which serves as a protective interlock door, and the opening and closing action of the protective interlock door is interlocked with the horizontal and vertical positions of the flip-plate working platform through an interlocking mechanism.

[0006] Furthermore, the interlocking mechanism includes a limit switch installed next to the shearing frame and a contactor connected in series with the limit switch; the coil of the contactor is connected in series with the limit switch, and the control terminal of the contactor is used to control the switching between two positions of the drive mechanism; the control terminal of the limit switch cooperates with the opening and closing action of the protective interlocking door.

[0007] Furthermore, the driving mechanism is a cylinder installed in the edge material pit. The cylinder is equipped with a solenoid valve for controlling the cylinder's movement and connected to the control terminal of the contactor. The cylinder body is installed inside the edge material pit near the edge of the shearing frame. The cylinder's movable rod is rotatably connected to the bottom of the flip-plate working platform. The flip-plate working platform is rotatably installed via a horizontal rotating shaft located on the edge of the edge material pit near the shearing frame.

[0008] Furthermore, the protective interlocking door is installed by rotating it via a vertical pivot located near the side of the conveying equipment.

[0009] Furthermore, the shearing frame is a disc shear.

[0010] This utility model designs a flip-up working platform between the disc shear and the edge material pit, and installs a protective interlock door next to the edge material pit. When the protective interlock door is closed, the limit switch closes, triggering the contactor, and the cylinder drive mechanism pushes the flip-up working platform up (the flip-up working platform is perpendicular to the ground). At this time, the edge material cut during production smoothly enters the edge material pit from the top of the flip-up working platform for packaging. When the protective interlock door is open, the limit switch opens, the contactor is de-energized, and the cylinder drive mechanism reverses its action, flattening the flip-up working platform (parallel to the ground) and completely covering the edge material pit, providing a safe working space for operators. At this time, the disc shear can be changed and the blade can be adjusted, ensuring safety during operation. Attached Figure Description

[0011] Figure 1 This is the circuit diagram of the interlocking mechanism. When the limit switch SQ is open (i.e., the protective interlocking door is in the open state), the flip-up working platform is leveled; when the limit switch SQ is closed (i.e., the protective interlocking door is in the closed state), the flip-up working platform is raised.

[0012] Figure 2 This is a front view of the protective interlock door of this utility model being closed and the flip-up work platform being raised.

[0013] Figure 3 This is a front view showing the protective interlock door of this utility model opened and the flip-up work platform laid flat.

[0014] 1-Disc shear, 2-Conveying equipment, 3-Side material pit, 4-Flip-plate working platform, 5-Safety interlock door, 6-Cylinder, 7-Limit switch, 8-Side material, 9-Strip blank. Detailed Implementation

[0015] This invention features a flip-plate working platform designed between the disc shear and the edge material pit. This facilitates blade adjustment and replacement, ensuring operational safety, and also ensures that the sheared edge material smoothly enters the edge material pit for packaging.

[0016] The following is the structure for specific implementation.

[0017] A safe working platform for shearing operations, including a side material pit 3 located between a disc shear 1 and a conveying device 2 (such as a powered roller conveyor); the side material pit 3 is equipped with a flip-up working platform 4 driven by a drive mechanism, which has both horizontal and vertical positions; protective doors are provided on both the front and rear sides of the side material pit 3, one of which serves as a protective interlock door 5. The opening and closing of the protective interlock door 5 is interlocked with the horizontal and vertical positions of the drive mechanism through an interlocking mechanism; the interlocking mechanism includes a limit switch 7 installed next to the disc shear 1 and a contactor connected in series with the limit switch 7; the coil of the contactor is connected in series with the limit switch 7, and the control terminal of the contactor is used to control the switching between the two positions of the drive mechanism; the control terminal of the limit switch 7 cooperates with the opening and closing of the protective interlock door 5. After the protective interlock door 5 is closed, a corresponding bolt or lock ensures its stable closed state.

[0018] The driving mechanism is a cylinder 6 installed in the edge material pit 3. The cylinder 6 is equipped with a solenoid valve for controlling the operation of the cylinder 6 and connected to the control terminal of the contactor. The cylinder body of the cylinder 6 is installed inside the edge material pit 3 near the edge of the disc shear 1 (positioned by a support installed on the inner wall of the pit). The movable rod of the cylinder 6 is rotatably connected to the bottom of the flip-plate working platform 4. The flip-plate working platform 4 is rotatably installed by a horizontal rotating shaft located on the edge of the edge material pit 3 near the shear frame. The protective interlock door 5 is rotatably installed by a vertical rotating shaft near the side of the conveying equipment 2.

[0019] Before cutting, the operator only needs to close the protective interlock door on the operating side. The interlock controls the tilting work platform to stand up. If the protective interlock door on the operating side is not closed, the tilting work platform cannot stand up and the edge cannot be cut.

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] 1. Before shearing production, open the protective interlock door 5, disconnect the limit switch 7, de-energize the contactor, and reverse the cylinder drive mechanism to level the flip-plate work platform 4. According to the technical requirements for the width of the strip to be produced, change and set the blades of the disc shear (e.g., ...). Figure 2 (As shown).

[0022] 2. During the shearing process, closing the protective interlock door 5 and closing the limit switch 7 triggers the contactor. The cylinder drive mechanism pushes up the flip-plate working platform 4 (the flip-plate is perpendicular to the ground), and the sheared edge material smoothly enters the edge material pit for packaging (e.g., Figure 3 (As shown).

[0023] Limit switches can be contact type (such as direct-acting type). The basic structure of a protective interlocking door is a commonly used door. When the door is closed (e.g., ... Figure 2As shown, the device moves to one side of the edge material pit to block that side (the other side of the edge material pit is already blocked by another fixed protective door). Touching the push rod of the limit switch activates the interlock circuit, energizing the contactor coil. This controls the cylinder drive mechanism to push up the flip-up working platform. Since the flip-up platform has a limited height, it will not affect the edge material falling into the pit. When the protective interlock door is opened, the push rod of the limit switch resets under the action of the spring, the interlock circuit is disconnected, the contactor coil is de-energized, and the cylinder drive mechanism controls the cylinder to retract, flattening the flip-up working platform.

[0024] The reciprocating motion of the cylinder is controlled by switching on and off a solenoid valve. The solenoid valve controls the flow of compressed air, thereby extending and retracting the cylinder. This control method is a conventional technique. If a single-acting cylinder reversing circuit is used, when the solenoid valve is energized, air pressure acts on the cylinder piston, causing the movable rod to extend (the tilting platform rises); when the solenoid valve is de-energized, the movable rod retracts under the action of a spring.

[0025] like Figure 2 , 3 The cylinder shown is hinged to the tilting platform, and the connection between the two is usually achieved through a hinged arm to accommodate changes in the horizontal and vertical positions of the tilting platform. When the tilting platform is horizontal, the end without the pivot rests on the right end of the edge material pit to maintain horizontality; the protective door is located on the front and rear sides of the edge material pit, which refers to the front and rear direction in the figure (perpendicular to the direction on the paper).

Claims

1. A safety working platform for tool setting and changing in a shearing process, comprising a side material pit (3) located between the shearing frame and the conveying equipment (2); characterized in that, The edge material pit (3) is equipped with a flip-plate working platform (4) with horizontal and vertical positions driven by a drive mechanism; the front and rear sides of the edge material pit (3) are equipped with protective doors, one of which serves as a protective interlocking door (5). The opening and closing action of the protective interlocking door (5) is interlocked with the horizontal and vertical positions of the flip-plate working platform (4) through the interlocking mechanism.

2. The safe working platform for tool setting and changing in the shearing process as described in claim 1, characterized in that, The interlocking mechanism includes a limit switch (7) installed next to the shearing frame and a contactor connected in series with the limit switch (7); the coil of the contactor is connected in series with the limit switch (7), and the control end of the contactor is used to control the conversion between the two positions of the drive mechanism; the control end of the limit switch (7) cooperates with the opening and closing action of the protective interlocking door (5).

3. The safe working platform for tool setting and changing in the shearing process as described in claim 2, characterized in that, The driving mechanism is a cylinder (6) installed in the edge material pit (3). The cylinder (6) is equipped with a solenoid valve for controlling the action of the cylinder (6) and connected to the control end of the contactor. The cylinder body of the cylinder (6) is installed inside the edge material pit (3) near the edge of the shearing frame. The movable rod of the cylinder (6) is rotatably connected to the bottom of the flip plate working platform (4). The flip plate working platform (4) is rotatably installed by a horizontal rotating shaft located on the edge of the edge material pit (3) near the edge of the shearing frame.

4. The safe working platform for tool setting and changing in the shearing process as described in claim 3, characterized in that, The protective interlocking door (5) is installed by rotating on a vertical shaft near the side of the conveying equipment (2).

5. The safe working platform for tool setting and changing in the shearing process as described in any one of claims 1-4, characterized in that, The shearing frame is a disc shear (1).

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