WO2008089630A1

WO2008089630A1 - Device for cutting double-layered laminated glass

Info

Publication number: WO2008089630A1
Application number: PCT/CN2007/070355
Authority: WO
Inventors: Zijie Huang
Original assignee: Zijie Huang
Priority date: 2007-01-17
Filing date: 2007-07-25
Publication date: 2008-07-31
Also published as: CN201077813Y

Abstract

A Device for cutting double-layered laminated glass, comprises a U-shape frame (10), a limiting means (20), an upper tool holder (32) and a lower tool holder (31), the upper tool holder includes: an upper fixing support member (322) having a thread hole, firmly connected to an upper arm of the U-shape frame; an adjusting screw (321) engaged within the thread hole to threadly connect to the upper fixing support member; and an adjusting support member (323) for supporting an upper cutter, vertically movably connected to the upper fixing support member and rotatably connected to an end of the adjusting screw extending out of the thread hole. The adjusting screw drives the adjusting support member to move vertically when being rotated. The device can also include an oil supply means to apply penetrating oil to glass surface when cutting glass and a display means to display cutting force. The device can cut all sorts of double-layered laminated glass and is convenient for users to operate manually.

Description

Double-layer laminated glass cutter

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a cutting apparatus for a laminated glass article, and more particularly to a device for manually cutting a double-layered laminated glass article. Background technique

For the cutting of glass, especially for the safe use of glass, the double-layer laminated safety glass is generally cut by the original cutting method, that is, the front side is generally cut and the back side is cut. This cutting method requires high labor intensity and poses a hidden danger to operational safety.

In order to overcome the deficiencies of the conventional means of cutting glass, the Chinese Patent Application No. "03802296.6" entitled "Cutting a mineral-based sheet, especially a glass for laminated safety glass" discloses a Chinese invention patent application. An apparatus for cutting safety glass, the apparatus comprising a frame, the frame providing an arm of a fork structure, and a cutting head disposed at a free end of the arm. In operation, the glass to be cut is placed in a fork structure, and the cutting tool in the cutting head is cut on the glass surface by a bias applied by the fork structure. After research and practice, the applicant found that the equipment disclosed in the patent application has the following defects:

First, wherein the body of the frame of the cutter is a fork-shaped structure, and the distance between the free ends of the arms of the fork-shaped structure must be changed to be placed in the glass to be cut, so that the cutter has vertical strength instability; The cutting tool shifts the arm of the fork structure connecting the upper and lower cutting tools due to the pressure on the glass during cutting. If the strength is increased by thickening the fork structure of the frame, the cutter can only cut the glass of a specific thickness. , limiting the range of applications for cutting;

Second, the cutter completely utilizes the tension of the arm of the fork structure of the frame to adjust the cutting pressure of the cutting tool to the glass. The thicker the glass, the greater the cutting pressure, and the thinner the glass, the lower the cutting pressure. When cutting a thick glass, the cutter will fail to cut due to the excessive cutting pressure. When the thin glass is cut, the cutting failure will be insufficient due to insufficient cutting pressure, that is, the cutter cannot adapt to the change of the glass characteristics. Insufficient practicality;

Third, the cutting tool includes a cutting knife, which is usually a diamond glass cutting knife or a carbonized alloy wheel glass cutting knife. Before cutting the glass with such a cutting knife, a certain amount of kerosene such as kerosene is added. Penetrate the oil to ensure deep cracking of the tool marks. Cutting the glass without osmotic oil will result in uneven cuts and will cause cutting failure when the slab is broken. However, when cutting with the cutter, for example, if the double-layer laminated glass is to be cut, it is necessary to first apply the penetrating kerosene to the upper and lower surfaces of the glass, especially to infiltrate the lining oil to the lower layer glass, which is inconvenient for operation. . There is currently no practical means for cutting double-layer laminated glass that can reduce the labor intensity of the operator and is convenient for the operator to use. Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus for cutting a double layer of laminated glass which is easy for an operator to manually use to cut a double layer of laminated glass.

In order to meet the above object, the double-layer laminated glass cutter of the present invention comprises a U-shaped bracket, a limiting device and a tool holder, the tool holder including an upper blade holder and a lower blade holder, respectively mounted on the U-shaped bracket a free end of the upper arm and the lower arm, wherein the limiting device is slidably coupled to the U-shaped bracket by a guide rail disposed on the U-shaped bracket, wherein: the upper tool post includes an upper fixed support body, and the U The upper arm of the bracket is firmly connected, has a threaded hole; an adjusting screw threadedly connected to the upper fixing support through the threaded hole; and an adjusting support body for supporting the upper cutter, which is vertically movable and fixed The support body is connected, and one end of the adjusting screw protrudes from the threaded hole to be rotatably connected to the adjusting support body; when the adjusting screw is rotated, the adjusting screw drives the adjusting support body to move vertically.

The distance between the upper and lower tools can be adjusted by adjusting the screw. It is not necessary to change the distance between the upper arm and the lower arm of the U-shaped bracket, so the strength and rigidity of the upper arm and the lower arm of the U-shaped bracket can be strengthened, thereby avoiding the pressure of the cutting tool on the glass due to cutting. The action causes the arms of the fork-shaped structure connecting the upper and lower cutting tools to be biased, and at the same time, double-layer laminated glass of different thickness can be placed between the upper and lower cutters, and the glass of different characteristics is controlled by the rotation of the adjusting screw on the glass to be cut. Different cutting pressures are applied, so the double-layered glass cutter of the present invention is a practical cutting device which can reduce the labor intensity of the operator and facilitate the operator to cut various double-layer laminated glass.

The double-layer laminated glass cutter further characterized in that the upper tool holder further comprises an upper movable support body, wherein the upper movable support body is vertically movably connected to the adjustment support body, The upper cutter is mounted to the upper movable support, and a cushioning member is disposed between the upper movable support and the vertical gap of the adjustment support.

The double-layered laminated glass cutter further characterized in that: the lower blade holder includes a lower fixed support body and is firmly connected with the lower arm of the u-shaped bracket; and a lower movable support body for The lower cutter is supported to be vertically movably coupled to the lower fixed support; a cushioning member is disposed between the vertical gap of the lower movable support and the lower fixed support.

When the double-layered glass cutter of the present invention applies a cutting pressure on the glass to be cut, since the cushioning member can provide a slight upward or downward displacement of the upper or lower cutter in the vertical direction, the U shape is reduced. The tension of the upper and lower arms of the bracket, so that the U-shaped bracket does not ensure the necessary strength and The rigidity is increased by too much quality, which causes inconvenience to the user.

The double-layered film glass cutter is further characterized in that the U-shaped bracket is made by a cold extrusion drawing method of an aluminum-gold profile steel mold, and the U-shaped bracket can provide higher rigidity and strength. At the same time, it has a lighter quality.

The double-layer laminated glass cutter further characterized in that: the limiting device comprises a lower pressing plate slidably connected to the guiding rail; and an upper pressing plate disposed on the lower pressing plate, having two-way a long handle, comprising two first pillars extending vertically at intervals, one end of the two first pillars being slidably fixedly connected to the lower pressure plate through two through holes of the upper pressure plate; And comprising two second columns extending vertically at intervals, one ends of the two second columns are respectively fixedly connected with the upper pressing plate; a first locking assembly for locking the upper pressing plate on the first column And a second locking assembly for locking the position of the lower platen on the rail.

The double-layered laminated glass cutter further characterized in that: the first locking assembly comprises a shifting rod and a friction member, and the friction member has a matching surface with the cylindrical surface of the first column a concave side, the friction member is driven by a lever, so that the concave side of the friction member presses against the cylindrical surface of the first column.

The two-layer laminated glass cutter further characterized in that the one end portion of the friction member that drives the friction member is an eccentric wheel structure.

The double-layered glass cutter is further characterized in that it further comprises display means for displaying the cutting pressure applied by the cutter on the glass to be cut, and displaying the distance from the cut portion of the glass to be cut to the reference side. .

The double-layer laminated glass cutter further characterized in that it further comprises a permeated oil supply device for applying permeated oil to a cut portion of the glass to be cut, the permeated oil supply device comprising a U-shaped bracket disposed in the U-shaped bracket A cylinder, a tubing extending from the cylinder to the tool.

The double-layered laminated glass cutter is further characterized in that a polymer microporous material is disposed at one end of the oil pipe connected to the cutter.

The invention adopts a screw to adjust the cutting pressure applied to the glass to be cut, and the cutting pressure is easily controlled. Through the display device, the user can apply appropriate pressure according to the characteristics of different glasses, thereby greatly reducing the cutting failure. Possibility; the permeate oil supply device supplies the permeate oil to the upper and lower cutters while cutting the glass. When the cutter rolls the glass, the permeate oil is applied to the knife marks to ensure deep cracking of the knife marks, so that the user does not need to cut Applying penetrating oil to the front of the glass to be cut is greatly convenient for the user. BRIEF abstract Specific features and properties of the present invention are further exemplified by the following examples and the accompanying drawings. Figure 1 is a schematic perspective view of an embodiment of a two-layer film-coated glass cutter of the present invention;

Figure 2 is a partial cross-sectional view of the double-layer laminated glass cutter of Figure 1;

Figure 3 is a front elevational view of the lower blade holder of the double-layer laminated glass cutter of Figure 1;

Figure 3a is a cross-sectional view taken along line A-A of Figure 3;

Figure 3b is a cross-sectional view taken along line B-B of Figure 3;

Figure 4 is a partial cross-sectional view of the double-layered film glass cutter of Figure 1. BEST MODE FOR CARRYING OUT THE INVENTION

Referring to Fig. 1, a double-layered glass film cutter 1 of the present invention includes a U-shaped bracket 10, a stopper device 20 slidably coupled to the U-shaped bracket 10 for limiting the glass to be cut, and a U-shaped bracket 10 The tool holder device 30 is provided at the free end.

The U-shaped bracket 10 includes a lower arm 101, an upper arm 102, and a bottom 103. The structural strength and rigidity of the lower arm 101 and the upper arm 102 are large, so that the distance between the lower arm 101 and the upper arm 102 does not change during operation, that is, The overall structure of the U-shaped bracket is stable in vertical strength and rigidity, and reduces the force traverse of the upper and lower cutter heads. Preferably, the U-shaped bracket is formed by cold extrusion drawing of an aluminum-gold profile steel mold. The limiting device 20 includes a lower bottom plate 26. The lower arm 101 of the U-shaped bracket is provided with a guide rail 110. The bottom of the lower pressing plate 26 is provided with a dovetail groove that cooperates with the guide rail 110. The limiting device 20 can pass through the guide rail 110 at the U. The lower arm 101 of the bracket 10 is free to slide longitudinally; the limiting device 20 further includes an upper pressing plate 25 and a lower pressing plate 26, and the upper pressing plate 25 and the lower pressing plate 26 can provide a reference edge for accommodating the glass 100 to be cut of various thicknesses. space. The tool holder unit 30 includes an upper holder 32 and a lower holder 31 which are respectively coupled to the free ends of the upper arm 102 and the lower arm 101 of the U-shaped bracket 10, and the cutting tool of the upper holder 32 is adjustable in the vertical position. The term "longitudinal" as used herein refers to the direction of the arm length parallel to the upper arm 102 or the lower arm 101.

When the user cuts the double-layer laminated glass by using the double-layer laminated glass cutter 1 of the present invention, the reference edge of the double-layer laminated glass 100 to be cut is placed between the upper pressing plate 25 and the lower pressing plate 26, and the limit is The device 20 can define the vertical displacement and the longitudinal displacement of the glass 100, and the reference edge of the glass 100 can slide freely in the lateral direction within the limiting device 20; when the reference edge on the glass 100 is positioned by the limiting device 20, the glass 100 The cutting portion is placed between the upper tool holder 32 and the lower tool holder 31 of the tool holder device 30, the vertical position of the cutting tool of the upper tool holder 32 is adjusted, and the cutting tool is extended to the surface of the glass 100 to be applied to the glass 100. After a suitable cutting pressure, the glass cutter 1 is moved relative to the glass 100 to be cut, thereby cutting the glass 100. The specific movement mode is determined according to the situation on the spot, and the glass 100 can be fixed, the glass cutter 1 can be moved, or the glass cutter 1 can be fixed, and the glass 100 can be moved. Therefore, the double-layered glass cutter of the present invention can be separated from the conventional large-sized glass cutter. Glass The disadvantages of the cutting device's fixed position, inability to move, etc., make the cutting of the glass can be carried out in an outdoor worksite or workshop, realizing the flexible characteristics of the hand-held glass cutter. Here, the "lateral direction" means a direction parallel to a reference side of the glass 100, and the "vertical direction" means a direction perpendicular to a plane formed by the "longitudinal direction" and the "lateral direction".

Continuing to refer to Fig. 1, preferably, the guide rail 110 is marked with a scale 111 to facilitate the knowledge of the distance between the reference side of the glass 100 and the portion to be cut.

Referring to Figures 1 and 2 at the same time, the limiting device 20 includes a long handle 21, a short handle 22, a first locking assembly 23, a second locking assembly 24, an upper platen 25 and a lower platen 26. Two hollow cylindrical columns 250 are fixedly disposed on the upper surface of the upper platen 25, and the columns 210 at both ends of the long handle 21 are slidably passed through the hollow columns 250 of the upper platen 25 and fixed to the lower platen 26, respectively. connection. The diameter of the central portion adjacent to the upright column 210 is large, thereby forming a shoulder 211 on the outer surface, and the inner diameter is smaller at the bottom of the post 250, thereby forming a shoulder 251 on the inner surface, the spring 200 surrounding the lower portion of the column 210, and both ends They are pressed against the shoulder 211 and the shoulder 251, respectively.

The short handle 22 is fixedly connected to the upper pressing plate 25 through the uprights 220 at both ends thereof. When a vertical upward pulling force is applied to the handle 221 of the short handle 22, the upper pressing plate 25 together with the short handle 22 is along the long handle 21 The column 210 slides upward to provide a space defined by the upper platen 25 and the lower platen 26 for accommodating the glass to be cut. Since the spring 200 is always in a compressed state, the shoulder 211 of the column 210 receives an upward spring force, and the shoulder 251 of the column 250 receives a downward spring force, so that the reference edge of the glass to be cut is placed into the upper platen 25 and the lower platen. After the defined space 26 is clamped by the upper platen 25 and the lower platen 26 due to the downward spring force of the shoulder 251 of the upright 250, the retaining means 20 defines the vertical displacement of the glass 100 to be cut.

A first locking assembly 23 is provided on the lower surface of the upper platen 25, and the upper locking plate 25 can be locked in the vertical position by the first locking assembly 23. Preferably, the first locking assembly 23 includes a shift lever 231 and a friction member 232. One end of the lever 231 adjacent to the friction member 232 is a biasing wheel structure, and the screw 234 passes through the axis of the eccentric structure as a rotating shaft of the eccentric structure and rotatably connects the lever 231 and the upper pressing plate 25; There is also a connecting member (not shown in the drawing) between the structure and the upper pressing plate 25, the connecting member has an oblong hole, and the screw 234 extends through the center of the eccentric structure and protrudes from the oblong hole to be connected with the upper pressing plate 25; The member 232 is disposed at one end of the connecting member and has two sides which are concave surfaces, wherein one concave side abuts the cylindrical surface of the eccentric structure, and the other concave side abuts the lower cylindrical surface of the vertical column 210 of the long handle 21, when When the upper pressing plate 25 is not in the locked state, the cylindrical surface of the eccentric structure and the concave side of the friction member 232 have a gap, and the lower cylindrical surface of the column 210 and the other concave side of the friction member 232 have a gap. When the upper platen 25 needs to be locked, the lever 231 is rotated such that the cylindrical surface of the eccentric structure gradually approaches the concave side of the friction member 232, thereby pressing the friction member 232 such that the other concave side of the friction member 232 Pressing the column The lower part of the cylinder of 210, produced between the two sides of the compression A large friction force is generated, and preferably, the coefficient of friction of the lower portion of the column 210 is large. Thus, even if the shoulder 251 of the upright 250 of the upper platen 25 is subjected to the downward spring force of the spring 200, the upper platen 25 does not slide downward due to the action of the first locking assembly 23 and is locked in the vertical reachable. Anywhere.

A protruding stop block (not shown in the drawing) may be provided in the middle of the upper surface of the lower pressing plate 26 for defining the lateral displacement of the reference edge of the glass 100 to be cut relative to the cutting device, A reference plane parallel to the reference edge of the glass 100 to be cut is provided. In addition, a plurality of guides may be provided on the limit block as disclosed in the Chinese Patent Application No. "03802296.6", which is entitled "Cleaning a mineral-based sheet, especially a glass for laminated safety glass". The roller is adapted to facilitate free movement of the glass to be cut 100 in the space defined by the lower surface of the upper platen 25, the upper surface of the lower platen 26, and the reference surface of the stopper.

The second locking assembly 24 of the limiting device 20 is used to lock the position of the limiting device 20 at the lower arm 101 of the U-shaped bracket 10. The structure and the principle of locking are similar to those of the first locking assembly 23, when adjusting When the lever 245 is actuated, the friction member of the second locking assembly 24 (not shown in the drawings) generates a large frictional force with the side of the lower arm 101, thereby preventing relative movement of the retaining device 20 and the lower arm 101.

From the above description, one of ordinary skill in the art will appreciate that by the handle 221 of the short handle 22 and the lever of the eccentric 231 of the first locking assembly 23, the operator can easily adjust the vertical position of the upper platen 25 The lower surface of the upper platen 25 has a slight gap with the upper surface of the glass 100 to be cut, so that it is easy to restrict the vertical displacement of the glass to be cut 100 while the glass to be cut can also be on the upper platen 25 and the lower platen 26. Freely moving between; the stop device 20 can be locked on the lower arm 101 of the U-shaped bracket 10 by the lever 245 of the second locking assembly, thereby defining the longitudinal displacement of the glass 100 to be cut.

Referring also to Figs. 3 to 4, the upper tool holder 32 includes an adjustment screw 321, an upper fixed support 322, and an adjustment support 323 for supporting the upper cutter. The upper fixed support body 322 is fixedly coupled to the upper arm 102 of the U-shaped bracket 10, the adjusting screw 321 is screwed to the upper fixed support body 322, and the one end portion protrudes from the upper fixed support body 322 to be rotatably coupled to the adjustment support body 323. When the adjusting screw 321 is rotated, the adjusting screw 321 drives the adjusting support body 323 to move vertically with respect to the upper fixing support 322, that is, with respect to the upper arm 102 of the U-shaped bracket 10, preferably, for the operator to adjust, the adjusting screw An adjustment knob 324 is fixedly disposed at the top end of 321 .

The lower blade holder 31 includes a support body for supporting the lower cutter. Preferably, the support body includes a lower fixed support body 311, a lower movable support body 312, and a cushioning member 3121. The fixed support body 311 is fixedly coupled to the lower arm 101 of the U-shaped bracket 10, and the lower movable support body 312 is vertically movably coupled to the fixed support body 311. A cushioning member 3121 is disposed between the movable supporting body 312 and the fixed supporting body 311. Preferably, the cushioning member 3121 is a spring; a groove 3120 is formed on a side wall of the lower movable supporting body 312, and the threaded through hole 3110 Vertically opposite to the inner wall of the fixed support 311 corresponding to the slot 3120, one end of the screw 3111 passes through the through hole 3110 and extends to the slot In the cavity of 3120, under the action of the tension of the spring 3121, the lower movable support body 312 has a tendency to move upward, since the screw 3111 will contact the inner wall of the groove 3120, thereby restricting the lower movable support body 312 from moving upward; when the glass to be cut 100 When placed on the lower blade holder or when the glass 100 is cut, the first lower movable support body 312 can have a slight downward movement relative to the lower fixed support body 311 due to the action of the cushioning member 3121, thereby reducing the lower arm 101 of the U-shaped bracket 10. Tension effect.

Similarly, the upper blade holder 32 also includes an upper movable support body 325 that is vertically movably accommodated in the adjustment support body 323, and the upper movable support body 325 and the vertical gap of the adjustment support body 323 A cushioning member (not shown) is provided therein, so that when the cutting pressure is applied to the cut glass 100, the upper movable support 325 can have a slight upward displacement in the vertical direction with respect to the adjustment support 323, thereby reducing the U shape. The tension of the upper arm 102 of the stent 10 acts.

Guide rollers 313 may also be provided at the ends of the upper tool holder 31 and the lower tool holder 32 to facilitate relative movement between the glass 100 and the cutter 1. The guide rollers 313 are prior art and are only briefly indicated herein.

Hand-held cutters for cutting glass usually use a diamond glass cutter or a carbonized alloy wheel glass cutter to cut the glass. To ensure deep cracking of the knife mark, it is necessary to apply a permeate such as kerosene to the cut. Referring to Fig. 4, the glass cutter 1 of the present invention includes a permeate oil supply device 40, and the permeate oil supply device 40 includes a cylinder 400, an upper pipe 401, and a lower pipe 402. Preferably, the cylinder 400 is disposed at the upper end of the bottom of the U-shaped bracket adjacent to the handle 60. This arrangement allows the operator to use the cutter 1 more labor-savingly. One end of the upper pipe 401 is connected to the bottom of the cylinder 400, and extends from the upper arm 102 of the U-shaped bracket to the upper blade of the upper movable support 325 of the upper blade holder 32 (not shown in the drawing;), in the vicinity of the pipe 401 One end of the upper blade is preferably provided with a polymer microporous material, and through the siphoning action of the microporous material, that is, the oil is always sucked to a saturated state, and the oil can be saturated in a saturated state, but does not drip, when the movable support 325 is on the upper side. When the blade is rolled against the glass, the penetrating oil falls on the glass with the rolling belt of the upper blade, which acts as an osmosis. One end of the lower duct 402 is connected to the bottom of the cylinder 400, and extends from the lower arm 101 of the U-shaped bracket to the blade of the lower movable support 312 of the lower blade holder 31 (not shown in the drawing;), in the vicinity of the duct 402 One end of the lower blade is preferably provided with a polymer microporous material. Similarly, since the polymer siphon material is saturated and sucked, when the lower blade is rolled and cut on the lower side of the glass, the permeated oil is also attached to the glass with the rolling of the blade. The surface acts as a permeable to the knife mark.

Different cutting pressures may be required for different types of glass to be cut 100, and the required pressure to be cut into the glass 100 may be generated by rotating the adjusting screw 321. In order to allow the user to accurately know the cutting pressure applied on the glass to be cut 100, the double-layer laminated glass cutter 1 of the present invention further includes a digital display device 50 including a display screen 501 and a signal processing module 502. And a signal acquisition module 503, the signal acquisition module 503 obtains a cutting pressure signal generated by the blade to the glass, and the signal processing module 502 converts the pressure signal into a digital signal and is displayed by the display screen 501. Similarly, as the lower arm of the U-shaped bracket 10 An alternative to the scale on the guide rail 110 of 101, the distance from the reference edge of the glass 100 to the location to be cut can be displayed by the digital display device 50.

The embodiment of the double-layered laminated glass cutter of the present invention has been described in detail by the above-described embodiments, but the above-described embodiments are not intended to limit the essence of the present invention, and those skilled in the art can according to the above-described embodiments. The scope of the present invention is defined by the scope of the invention, which is defined by the claims of the present application.

Claims

Rights request

A double-layer laminated glass cutter comprising a U-shaped bracket, a limiting device and a tool holder, the tool holder comprising an upper tool holder and a lower tool holder, respectively mounted on an upper arm and a lower arm of the U-shaped bracket The free end, the limiting device is slidably coupled to the U-shaped bracket by a guide rail disposed on the U-shaped bracket, wherein the upper tool post comprises:

The upper fixed support body is firmly connected with the upper arm of the U-shaped bracket and has a threaded hole;

Adjusting a screw threadedly connected to the upper fixed support through the threaded hole;

Adjusting a support body for supporting the upper cutter, and vertically movably connected to the upper fixed support body, one end of the adjusting screw extending from the threaded hole and rotatably connected to the adjustment support body;

The adjusting screw drives the adjustment support to move vertically when the adjusting screw is rotated.

2. The double-layer laminated glass cutter according to claim 1, wherein the upper tool holder further comprises an upper movable support body, wherein the upper movable support body is vertically movable and the adjustment support body Connected, the upper cutter is mounted to the upper movable support, and a cushioning element is disposed between the upper movable support and the vertical gap of the adjustment support.

3. The double-layer laminated glass cutter according to claim 1 or 2, wherein the lower blade holder comprises:

Lowerly supporting the support, and firmly connecting with the lower arm of the U-shaped bracket;

a lower movable support for supporting the lower cutter to be vertically movably coupled to the lower fixed support; a cushioning member is disposed between the vertical gap of the lower movable support and the lower fixed support.

The double-layer laminated glass cutter according to claim 1, wherein the U-shaped bracket is formed by a cold extrusion drawing method of an aluminum-gold profile steel mold.

5. The double-layer laminated glass cutter of claim 1, wherein the limiting device comprises

a lower pressing plate slidably connected to the guide rail;

An upper pressing plate is disposed on the lower pressing plate and has two through holes;

a long handle, comprising two first pillars extending vertically at intervals, one ends of the two first pillars are slidably fixedly connected to the lower pressure plate through two through holes of the upper pressure plate;

a short handle, comprising two second columns extending vertically at intervals, one ends of the two second columns being fixedly connected to the upper platen respectively;

a first locking assembly for locking a position of the upper platen on the first upright; and a second locking assembly for locking a position of the lower platen on the rail.

6. The double-layer laminated glass cutter according to claim 5, wherein the first locking assembly comprises a lever and a friction member, the friction member having a cylindrical surface matching the first column a concave side, the friction member is driven by a lever, so that the concave side of the friction member presses against the cylindrical surface of the first column.

The double-layer laminated glass cutter according to claim 6, wherein the one end portion of the friction member that drives the friction member is an eccentric wheel structure.

8. The double-layer laminated glass cutter according to claim 1, further comprising display means for displaying a cutting pressure applied by the cutter on the glass to be cut, and displaying the cut from the glass to be cut to The distance of the reference edge.

9. The double-layer laminated glass cutter according to claim 1, further comprising a permeated oil supply device for applying permeated oil to a cut portion of the glass to be cut, the permeated oil supply device comprising a cylinder in the bracket, a tubing extending from the cylinder to the cutter.

10. The double-layer laminated glass cutter according to claim 9, wherein one end of the oil pipe connected to the cutter is provided with a polymer microporous material.