Split type bending knife

Abstract

The utility model discloses a kind of split type bending knives. The split type bending knife includes movable tool holder, the upper side of movable tool holder is provided with upper tool, the lower side of movable tool holder is provided with lower tool, and the lower tool includes lower fixed tool block, the both sides of lower fixed tool block are provided with lower movable tool block, lower movable tool block and lower fixed tool block are collinear, the cross section of lower movable tool block and lower fixed tool block is same, lower movable tool block is slidably connected with lower movable tool holder by guiding structure, and movable tool holder is provided with reciprocating mechanism to force lower movable tool block to abut or withdraw from lower fixed tool block. The utility model solves the problem that prior art cannot meet production demand.

Description

Technical Field

[0001] This utility model relates to the field of bending machine technology, and in particular to a split-type bending knife. Background Technology

[0002] When bending a workpiece using a bending center, the workpiece is first held down by a C-arm, and then bent using tools mounted on a movable tool holder. However, currently, the tools mounted on the movable tool holder are all of fixed size, which can be problematic when encountering special sheet metal parts, such as... Figure 1 When bending the special sheet metal a shown, the protrusions a2 on the left and right sides will be affected when bending the bending part a1 on the front side of the special sheet metal. When the bending part is bent again with a tool, it will interfere with the protrusions that do not need to be bent, which cannot meet the production requirements. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a split-type bending knife that can avoid protrusions on both sides of special sheet metal, thereby meeting production requirements.

[0004] To achieve the above objectives, the technical solution adopted by this utility model of a split-type bending knife is as follows:

[0005] A split-type bending cutter includes a movable cutter holder, an upper cutter disposed on the upper side of the movable cutter holder, and a lower cutter disposed on the lower side of the movable cutter holder. The lower cutter includes a lower fixed cutter block, and lower movable cutter blocks are disposed on both sides of the lower fixed cutter block. The lower movable cutter blocks and the lower fixed cutter blocks are collinear and have the same cross-section. The lower movable cutter blocks are slidably connected to the lower movable cutter holder through a guide structure. The movable cutter holder is provided with a reciprocating mechanism that drives the lower movable cutter blocks to abut or retract from the lower fixed cutter blocks.

[0006] Preferably, the reciprocating mechanism includes a bracket installed on the side wall of the movable tool holder, and a horizontally arranged cylinder is provided on the bracket. The extension rod of the cylinder is fixedly connected to the lower movable tool block through a connecting block.

[0007] Preferably, the guide structure includes a guide rail fixedly connected to the movable tool holder, and the guide rail is slidably fitted with a plurality of sliders fixedly connected to the lower movable tool block.

[0008] Preferably, the upper cutting tool is composed of several upper cutting tool blocks assembled together.

[0009] Preferably, the lower fixed blade block is composed of several lower blade blocks spliced ​​together.

[0010] Compared with the prior art, this utility model has the following advantages:

[0011] When processing special sheet metal, the reciprocating mechanism removes the lower fixed blade block, making room to avoid the protrusions on both sides of the special sheet metal, thus meeting production requirements. Attached Figure Description

[0012] Figure 1 This is a structural diagram of a special type of sheet metal.

[0013] Figure 2 This is a schematic diagram of the structure of the split-type bending knife of this utility model.

[0014] Figure 3 This is a schematic diagram of the working state of the lower tool disassembly.

[0015] Among them, a is special sheet metal, a1 is bending part, a2 is protruding part, 1 is movable tool holder, 2 is upper tool, 3 is lower tool, 31 is lower fixed tool block, 32 is lower movable tool block, 4 is guide structure, 41 is guide rail, 42 is slider, 5 is reciprocating mechanism, 51 is bracket, 52 is cylinder, and 53 is connecting block. Detailed Implementation

[0016] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0017] like Figure 1-3 As shown, a split-type bending cutter includes a movable cutter holder 1, an upper cutter 2 mounted on the upper side of the movable cutter holder, the upper cutter being composed of three upper cutter blocks, and a lower cutter 3 mounted on the lower side of the movable cutter holder, the lower cutter including a lower fixed cutter block 31, the length of the lower fixed cutter block being consistent with the length of the special sheet metal bending part, the lower fixed cutter block being composed of two lower cutter blocks, and lower movable cutter blocks 32 mounted on both sides of the lower fixed cutter block, the lower movable cutter block and the lower fixed cutter block being collinear, the lower movable cutter block and the lower fixed cutter block having the same cross-section, the lower movable cutter block being slidably connected to the lower movable cutter holder through a guide structure 4, the guide structure including a guide rail 41 fixedly connected to the movable cutter holder, the guide rail being slidably fitted with two sliders 42 fixedly connected to the lower movable cutter block, the movable cutter holder being equipped with a reciprocating mechanism 5 that drives the lower movable cutter block to abut or retract from the lower fixed cutter block, the reciprocating mechanism including a bracket 51 mounted on the side wall of the movable cutter holder, a horizontally arranged cylinder 52 mounted on the bracket, the telescopic rod of the cylinder being fixedly connected to the lower movable cutter block through a connecting block 53.

[0018] The specific working process and principle of a split-type bending cutter: When processing special sheet metal, the cylinder is activated, and the cylinder's extension rod retracts, driving the lower movable cutter block to slide outward along the guide rail, creating working space for the lower fixed cutter block to bend the front center of the special sheet metal. After the special sheet metal processing is completed, activating the cylinder drives the lower movable cutter block to reset. The lower movable cutter block and the lower fixed cutter block are then joined together, returning to the normal state, thus ensuring the bending requirements of most normal sheet metal. Using the same principle, the upper cutter can also be designed with a similar structure to the lower cutter to meet the production needs of different working conditions.

Claims

1. A split-type bending cutter, comprising a movable cutter holder, an upper cutter disposed on the upper side of the movable cutter holder, and a lower cutter disposed on the lower side of the movable cutter holder, characterized in that: The lower cutter includes a lower fixed cutter block, and lower movable cutter blocks are arranged on both sides of the lower fixed cutter block. The lower movable cutter block and the lower fixed cutter block are collinear and have the same cross-section. The lower movable cutter block is slidably connected to the lower movable cutter holder through a guide structure. The movable cutter holder is provided with a reciprocating mechanism that drives the lower movable cutter block to abut or retract from the lower fixed cutter block.

2. The split-type bending knife according to claim 1, characterized in that: The reciprocating mechanism includes a bracket installed on the side wall of the movable tool holder, and a horizontally arranged cylinder is provided on the bracket. The extension rod of the cylinder is fixedly connected to the lower movable tool block through a connecting block.

3. The split-type bending knife according to claim 1, characterized in that: The guide structure includes a guide rail fixedly connected to the movable tool holder, and the guide rail is slidably fitted with a plurality of sliders fixedly connected to the lower movable tool block.

4. The split-type bending knife according to claim 1, characterized in that: The upper cutting tool is composed of several upper cutting tool blocks.

5. The split-type bending knife according to claim 1, characterized in that: The lower fixed blade block is composed of several lower blade blocks spliced ​​together.

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