Bending center hinge knife presser rod with protection mechanism and control method

Abstract

The application discloses a bending center hinge knife press rod with a protection mechanism, which comprises a hinge knife press rod upper part and a hinge knife press rod lower part; the hinge knife press rod upper part and the hinge knife press rod lower part can move up and down relative to each other; the hinge knife press rod upper part is made of a magnet material; the hinge knife press rod lower part is provided with a magnet block, a protection pin shaft and a first induction switch, the magnet block is fixed to the hinge knife press rod upper part by magnetic attraction; the lower end of the hinge knife press rod lower part is provided with an opening structure matched with a hinge knife pin shaft; when working normally, the hinge knife press rod lower part drives the hinge knife pin shaft and a hinge knife side cutter to slide downward along a slide way in the hinge knife body; when the hinge knife side cutter is stuck in the hinge knife body and the acting force exceeds the attraction of the magnet block on the hinge knife press rod upper part, the hinge knife press rod upper part and the hinge knife press rod lower part are separated, and the force acting on the hinge knife pin shaft is released. The hinge knife press rod can protect the hinge knife pin shaft from being pressed and deformed when the hinge knife is stuck.

Description

Technical Field

[0001] This invention relates to the field of sheet metal bending center processing, and specifically to a bending center hinge knife pressure bar with a protective mechanism. Background Technology

[0002] The hinge cutter is a component of the bending center pressure cutter. Its working principle involves the connection between the hinge cutter pin and the hinge cutter side blades. As the hinge cutter pin and side blades slide up and down inside the hinge cutter body, the overall width of the hinge cutter changes. The power for the hinge cutter pin's up-and-down movement comes from the hinge cutter pressure rod, which moves up and down under the drive of the power mechanism. An opening below the hinge cutter pressure rod engages with the hinge cutter pin. When the hinge cutter pressure rod moves downwards, it pushes the hinge cutter pin and side blades downwards along the internal slide. When the hinge cutter pressure rod moves upwards, the hinge cutter pin and side blades move upwards along the internal slide under the action of an internal return spring.

[0003] In existing technologies, when the hinge blade side blade moves along the internal slide, there is a possibility of jamming. Because the hinge blade pressure rod is a rigid structure with a large thrust, it can deform the hinge blade pin, leading to malfunction and affecting the normal operation of the equipment. Therefore, a bending center hinge blade pressure rod with a protection mechanism is proposed to protect the hinge blade pin from deformation when the hinge blade jams. Summary of the Invention

[0004] In view of the technical problems existing in the background art, the present invention provides a bending center hinge pressure bar with a protection mechanism that can protect the hinge pin from deformation when the hinge blade is stuck. To achieve the above objective, the present invention provides the following technical solution:

[0005] A bending center hinge cutter pressure rod with a protection mechanism and a control method thereof, comprising a hinge cutter pressure rod, wherein the hinge cutter pressure rod includes an upper hinge cutter pressure rod and a lower hinge cutter pressure rod; the upper hinge cutter pressure rod and the lower hinge cutter pressure rod are capable of moving up and down relative to each other;

[0006] The hinge cutter pressure bar is made of magnetic material;

[0007] A magnet, a protective pin, and a first inductive switch are installed under the hinge knife pressure rod. The magnet is attracted and fixed to the hinge knife pressure rod.

[0008] The lower end of the hinge knife pressure bar is provided with an opening structure that is adapted to the hinge knife pin shaft;

[0009] During normal operation, the hinge cutter pressure rod drives the hinge cutter pin and the hinge cutter side blade to slide downward along the slide inside the hinge cutter body. When the hinge cutter side blade gets stuck inside the hinge cutter body and the force exceeds the attraction of the magnet on the hinge cutter pressure rod, the upper and lower hinge cutter pressure rods separate, releasing the force acting on the hinge cutter pin.

[0010] Preferably, the hinge cutter pressure rod at the bending center further includes a linear guide; both the upper and lower hinge cutter pressure rods are mounted on the vertically arranged linear guide, the upper hinge cutter pressure rod is fixed on the linear guide, and external force pushes the upper hinge cutter pressure rod to move up and down, while the lower hinge cutter pressure rod can move up and down along the length of the linear guide.

[0011] Preferably, a second inductive switch is installed at the end of the hinge blade pressure rod to detect whether the upper and lower parts of the hinge blade pressure rod are separated.

[0012] A control method for the bending center hinge knife pressure bar with the above-mentioned protective mechanism, the control method comprising the following steps:

[0013] S1: Move the hinge knife pressure rod to the working position of the hinge knife, and place the hinge knife pin in the opening structure under the hinge knife pressure rod. If the first sensor switch detects the hinge knife pin, proceed to step S2; if the first sensor switch does not detect the hinge knife pin, proceed to the alarm process.

[0014] S2: Detect the status of the second sensor switch. If the hinge knife lever is in the closed state (both upper and lower), proceed to step S3; otherwise, proceed to the alarm process.

[0015] S3: Execute the working procedure instructions for the up and down movement of the hinge knife pressure bar. After execution, proceed to step S4; if not completed, return to S2.

[0016] S4: When the hinge knife pressure bar is separated from the hinge knife pressure bar, if the second sensor switch detects an open state signal, the alarm process will be initiated.

[0017] The beneficial effects of this invention are:

[0018] 1. This invention solves the problem in the prior art where the rigid hinge blade pressure rod deforms the hinge blade pin shaft when the hinge blade side blade is stuck inside the hinge blade body. By improving the hinge blade pressure rod mechanism and setting a force protection mechanism on it, the force application mechanism on it will disengage when the pressure exceeds the set value, releasing the force on the hinge blade pin shaft, thereby protecting the hinge blade pin shaft, reducing equipment damage rate, and lowering after-sales maintenance costs.

[0019] 2. This device monitors whether the hinge knife pin is within the opening structure under the hinge knife pressure rod or whether the upper and lower parts of the hinge knife pressure rod are separated by a first and a second inductive switch. If the operating conditions do not conform to the correct process, an alarm is triggered to prevent the fault from escalating further. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the position and structure of the bending center hinge knife pressure bar in the prior art.

[0021] Figure 2 This is a schematic diagram of the hinge knife pressure rod in this invention (the upper and lower parts of the hinge knife pressure rod are fixed).

[0022] Figure 3 This is a schematic diagram of the position structure of the second inductive switch in this invention;

[0023] Figure 4 This is a schematic diagram of the hinge knife pressure bar structure in this invention (the upper and lower parts of the hinge knife pressure bar are separated).

[0024] Figure 5 This is a schematic diagram of the position and structure of the hinge knife pressure rod of the present invention (the upper and lower parts of the hinge knife pressure rod are fixed).

[0025] Figure 6 This is a schematic diagram of the position and structure of the hinge knife pressure bar of the present invention (the upper and lower hinge knife pressure bars are separated).

[0026] In the diagram, 1-hinge knife pressure rod, 2-hinge knife pin, 3-hinge knife body, 4-hinge knife side blade, 5-first sensor switch, 6-linear rail, 7-second sensor switch, 8-upper hinge knife pressure rod, 9-lower hinge knife pressure rod, 10-magnet block, 11-protective pin. Detailed Implementation

[0027] In existing technologies, such as Figure 1 As shown, the working principle of the hinge knife module is as follows: The hinge knife is one of the components of the bending center pressure knife. Its working principle is that the hinge knife pin 2 and the hinge knife side knife 4 are connected and can slide up and down inside the hinge knife body 3. Since there is a slide rail inside the hinge knife body 3, the overall width of the hinge knife can be changed when the hinge knife pin 2 and the hinge knife side knife 4 slide up and down inside the hinge knife body 3.

[0028] The hinge cutter pin 2 is powered to slide up and down by the hinge cutter pressure rod 1, which can move up and down under the drive of the power mechanism. The opening structure at the bottom 9 of the hinge cutter pressure rod is engaged with the hinge cutter pin 2. When the hinge cutter pressure rod 1 moves downward, it pushes the hinge cutter pin 2 and the hinge cutter side blade 4 downward along the internal slide. When the hinge cutter pressure rod 1 moves upward, the hinge cutter pin 2 and the hinge cutter side blade 4 move upward along the internal slide under the action of the internal return spring.

[0029] In the existing technology, when the hinge blade side blade 4 moves along the internal slide, there is a possibility of jamming. Since the hinge blade pressure rod 1 is a rigid structure and has a large thrust, it may cause the hinge blade pin 2 to be deformed, which may lead to failure and affect the normal operation of the equipment.

[0030] To solve the above technical problems, combined with Figures 1-6 A bending center hinge knife pressure rod 1 with a protection mechanism, the hinge knife pressure rod 1 includes an upper hinge knife pressure rod 8 and a lower hinge knife pressure rod 9; the upper hinge knife pressure rod 8 and the lower hinge knife pressure rod 9 can move up and down relative to each other;

[0031] The hinge cutter bar 8 is made of magnetic material;

[0032] A magnet 10, a protective pin 11, and a first inductive switch 5 are installed on the lower 9 of the hinge knife pressure rod. The magnet 10 is attracted and fixed to the upper 8 of the hinge knife pressure rod.

[0033] The lower end of the hinge knife pressure bar 9 is provided with an opening structure that is compatible with the hinge knife pin 2;

[0034] When working normally, the hinge knife pressure rod 9 drives the hinge knife pin 2 and the hinge knife side blade 4 to slide downward along the slide inside the hinge knife body 3;

[0035] like Figures 5-6 As shown, when the hinge blade side blade 4 gets stuck inside the hinge blade body 3 and the force exceeds the attraction of the magnet block 10 to the hinge blade pressure rod upper 8, the hinge blade pressure rod upper 8 and the hinge blade pressure rod lower 9 separate. The hinge blade pressure rod lower 9 drives the magnet block 10 to move upward, releasing the force of the hinge blade pressure rod lower 9 acting on the hinge blade pin 2.

[0036] After the upper hinge cutter bar 8 and the lower hinge cutter bar 9 separate and then re-engage, the protective pin 11 acts as a buffer against the impact between the magnet block 10 and the lower hinge cutter bar 9 at the moment of engagement.

[0037] The bending center hinge knife pressure rod 1 also includes a linear guide 6; both the hinge knife pressure rod 8 and the hinge knife pressure rod 1 are mounted on the vertically arranged linear guide 6 and can move up and down along the length of the linear guide 6.

[0038] A second inductive switch 7 is installed at the end of the upper hinge blade pressure bar 8 to detect whether the upper hinge blade pressure bar 8 and the lower hinge blade pressure bar 9 are separated.

[0039] A control method for the bending center hinge knife pressure bar 1 with the above-mentioned protective mechanism, the control method includes the following steps:

[0040] S1: Move the hinge knife pressure rod 1 to the working position of the hinge knife, and place the hinge knife pin 2 in the opening structure under the hinge knife pressure rod 9. If the first sensor switch 5 detects the hinge knife pin 2, then execute step S2; if the first sensor switch 5 does not detect the hinge knife pin 2, then proceed to the alarm process.

[0041] S2: Detect the state of the second sensor switch 7. If the hinge knife lever upper 8 and hinge knife lever lower 9 are detected to be in a closed state, then execute step S3; otherwise, proceed to the alarm process.

[0042] S3: Execute the working procedure instruction of the external thrust mechanism to normally push the hinge knife pressure rod 8 up and down. After execution, proceed to step S4; if not completed, return to step S2.

[0043] S4: When the upper hinge knife pressure bar 8 and the lower hinge knife pressure bar 9 separate, if the second sensor switch 7 detects an open state signal, the alarm process will be initiated to prevent further damage from the fault.

Claims

1. A bending center hinge knife pressure bar with a protective mechanism, comprising a hinge knife pressure bar, characterized in that: The hinge cutter pressure rod includes an upper hinge cutter pressure rod and a lower hinge cutter pressure rod; the upper hinge cutter pressure rod and the lower hinge cutter pressure rod can move up and down relative to each other; The hinge cutter pressure bar is made of magnetic material; A magnet, a protective pin, and a first inductive switch are installed under the hinge knife pressure rod. The magnet is attracted and fixed to the hinge knife pressure rod. The lower end of the hinge knife pressure bar is provided with an opening structure that is adapted to the hinge knife pin shaft; When working normally, the hinge knife pressure rod drives the hinge knife pin and the hinge knife side blade to slide downward along the slide inside the hinge knife body; When the hinge blade side blade gets stuck inside the hinge blade body and the force exceeds the attraction of the magnet to the hinge blade pressure rod, the upper and lower hinge blade pressure rods separate, releasing the force acting on the hinge blade pin. It also includes a linear guide; the hinge knife pressure bar is mounted on the vertically arranged linear guide and can move up and down along the length of the linear guide; A second inductive switch is installed at the end of the hinge cutter bar to detect whether the upper and lower parts of the hinge cutter bar are separated.

2. A control method for the bending center hinge knife pressure rod with protective mechanism as described in claim 1, characterized in that: The control method includes the following steps: S1: Move the hinge knife pressure rod to the working position of the hinge knife, and place the hinge knife pin in the opening structure under the hinge knife pressure rod. If the first sensor switch detects the hinge knife pin, proceed to step S2; if the first sensor switch does not detect the hinge knife pin, proceed to the alarm process. S2: Detect the status of the second sensor switch. If the hinge knife lever is in the closed state (both upper and lower), proceed to step S3; otherwise, proceed to the alarm process. S3: Execute the normal up-and-down movement instructions on the hinge knife pressure bar. After execution, proceed to step S4; if not completed, return to S2. S4: When the hinge knife pressure bar is separated from the hinge knife pressure bar, if the second sensor switch detects an open state signal, the alarm process will be initiated.

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