Lengthened glass cutter

Abstract

The invention discloses a lengthened glass cutter, comprising a cutter head (16) and a cutter bar (17), wherein the cutter head (16) is arranged at one end of the cutter bar (17); the lengthened glass cutter further comprises a backboard (4), a ruler (7) and a sliding device, wherein one end of the ruler (7) is rotationally connected with the backboard (4) and tightly locked by a locking device, the sliding device is connected with the ruler (7) in a sliding manner, the cutter bar (17) is connected with the sliding device and vertical to the plane of the ruler abutted against the glass surface, and one end of the ruler (7) away from the backboard (4) is detachably connected with an extension ruler (15). After adopting the structure, the ruler is combined with the cutter head and the cutter bar, so that users can draw lines on the glass by only using the glass cutter; and meanwhile, when the ruler is insufficient in length, the extension ruler can be connected with the end part of the ruler in an inserting manner to lengthen the whole length, and the straightness between the extension ruler and the ruler also can be ensured.

Description

technical field [0001] The invention relates to the technical field of cutting tools, in particular to an extended glass knife. Background technique [0002] A glass knife refers to a knife used to cut glass. Usually, the part of the glass knife used for cutting is made of diamond or alloy material that is stronger than glass. The glass cutter in the prior art includes a cutter head and a cutter bar. The cutter head is fixed on the end of the cutter bar. During operation, the user holds the cutter bar with his hand and scratches the cutter head on the glass. But there is following shortcoming in the glass knife of this structure: [0003] 1) When the glass is cut, the marking line must be smooth and continuous, so that the cut glass section will be smooth and regular. Therefore, the glass knife needs to be equipped with a ruler or other rulers to mark the line when marking. In this way, The user must carry the required ruler or other rulers during operation, and the work c...

AI Technical Summary

Problems solved by technology

[0003] 1) When the glass is cut, the marking line must be smooth and continuous, so that the cut glass section will be smooth and regular. Therefore, the glass knife needs to be equipped with a ruler or other rulers to mark the line when marking. In this way, The user must carry the required ruler or other rulers during operation, and the work cannot be carried out without these rulers;

[0004] 2) When cutting obliquely on glass, such as 30°, 45° inclination angle, you must first measure the angle, then draw the cutting line in advance, and then use a ruler such as a ruler to cut, so the operation is very Inconvenient, time-consuming and labor-intensive, greatly reducing production efficiency;

[0005] 3) When drawing parallel lines or vertical lines on the glass surface, it is like drawing on paper. Figure 1 In the same way, several rulers need to be operated at the same time. For example, when drawing a parallel line, two rulers are needed. The first one is used as a ruler, and the second one is placed vertically on the first ruler. Move the first ruler down or up, and draw the second line after confirming the position. Therefore, this operation has two disadvantages: one is that the operation is more troublesome, and the other is that there are many parallel lines drawn due to human factors. The position of the line will deviate

[0006] 4) In addition, the length of a ruler is limited. When it is necessary to draw a longer line, it needs to be connected by several line segments. Therefore, this will cause the two line segments to not be on a straight line. In other words In other words, there is an angle between two line segments. If there are multiple line segments forming a dashed line, based on the accumulation of errors, the straightness error of this dashed line is very large. Also, the connection between line segments There are also errors. Therefore, when the scribed line is not straight or the scribed line is discontinuous, the glass will break when it breaks along the scribed line.

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