CN116021081A - Novel gap adjustment mechanism is cut to hack of wedge sawtooth - Google Patents

Abstract

The invention discloses a novel gap adjusting mechanism for scrap shears with wedge surface sawteeth, and relates to the technical field of plate and strip steel rolling machinery, wherein the gap adjusting mechanism comprises a clamping mechanism, a clamping mechanism and a clamping mechanism. The invention relates to a novel gap adjusting mechanism for a scrap shear with saw teeth on a wedge surface, wherein the wedge surface is formed by designing a matched combined wedge surface of an upper blade and a side liner of an upper cutter head, and the wedge surface is formed by designing a matched combined wedge surface of the upper blade and a bottom liner of the upper cutter head, and rectangular teeth are machined at the wedge surfaces of the upper blade and the upper cutter head and are buckled with each other. When the relative positions of the upper blade and the side liner of the upper cutter head and the relative positions of the upper blade and the bottom liner of the upper cutter head are respectively changed, the gap and the contact ratio of the upper blade and the lower blade can be respectively quantitatively and accurately adjusted on line, the device is applied to scrap shear equipment in the field of steel rolling, the gap and the contact ratio between the upper blade and the lower blade can be adjusted on line, efficiently and quantitatively, and the phenomenon of tipping damage of the blades is eliminated. Meanwhile, the clearance and the contact ratio of the blades can be quantitatively and online adjusted, so that the abrasion of the blades can be compensated, and the service life of the blades can be prolonged.

Description

A New Gap Adjustment Mechanism for Chipping Shears with Wedge Surface Serrations

technical field

The invention relates to the technical field of plate and strip steel rolling machinery, in particular to a novel wedge-face sawtooth trimmer gap adjustment mechanism.

Background technique

When the existing scrapping shear equipment is in use, the scrapping shear equipment is a key equipment for strip rolling. The front width control process: after the strip edge is cut off by the disc, the scrapping shear equipment is required to cut the continuous strip edge into length Small slats of about 210mm are collected for use in the subsequent acid regeneration process. The cutting edge shearing equipment is located in the plate and strip rolling production line after the disc shears to cut off the strip edge cut by the width-controlled disc shears; the upper and lower cutter heads are equipped with six pairs of blades, the center distance between the upper and lower cutter heads is 400mm, and the strip thickness is 2.0-6.0mm mm, the strip speed is 250mpm, the gap between each pair of blades is 0.20mm-0.60mm during shearing, and the coincidence range of each pair of blades is 0.5mm-1.0mm. The above six pairs of blade gaps and coincidence requirements are all equal, the maximum tolerance of the blade gap is 0.02mm, and the maximum tolerance of coincidence is 0.10mm, as shown in Figure 7;

However, during the implementation of the above-mentioned technical solutions, it was found that at least the following technical problems existed:

At present, when the existing cutter head assembly is in use (as shown in Figure 7), the adjustment of the blade gap and the coincidence degree is realized by adding and subtracting spacers on the side liner and the bottom liner; At the same time, the phenomenon of continuous knife cutting and blade cracking equipment failure often occurs, resulting in the accumulation of belt edges and forcing the production line to stagnate.

Disadvantages of the original technical solution:

1. The installation accuracy of the blades is very high (the maximum tolerances for clearance and coincidence are 0.02mm and 0.10mm respectively), but the original design cannot meet the quantitative, intuitive, efficient, and online adjustment of blade clearance and coincidence;

2. Due to the high precision of the blade installation, the original design is to adjust the gap and coincidence of the blades by adding and subtracting spacers. The thickness of the addition and subtraction spacers is usually in the range of 0.02-0.10, but this thinner spacer will change with the cutting The cutting impact force is gradually crushed, and then the gap and coincidence of the blades also lose the original installation accuracy, resulting in continuous shearing and blade chipping.

3. The original design blade and the side and bottom gaskets have no axial constraints, and there is relative axial movement, which indirectly leads to changes in blade clearance and coincidence.

4. Due to the cumulative processing error and measurement error, the adjustment shims of each set of blades are different, and the blade clearance of the cutting edge scissors requires high precision, and it is difficult to adjust the blade shims. Repeated adjustments have poor accuracy.

5. When the blade gap and coincidence accuracy are not satisfied due to blade wear or other reasons, the cutting edge shear box can only be replaced as a whole, and online blade adjustment cannot be realized. The overall replacement of the scissor box requires a large volume, long time, and heavy workload, and the accuracy of the blade gap and coincidence during production is also poor. For this reason, we propose a new wedge-shaped sawtooth cutting edge shear gap adjustment mechanism.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the present invention provides a novel wedge sawtooth shredder gap adjustment mechanism, the purpose of which is to solve the problem that the shredder equipment in the steel rolling production line cannot perform quantitative, intuitive, accurate, online, and rapid blade clearance and overlap. adjustment problem.

(2) Technical solutions

To achieve the above object, the present invention is achieved through the following technical solutions:

A new gap adjustment mechanism for cutting edge shears with wedge surface and sawtooth. This new type of gap adjustment mechanism for cutting edge shears with wedge surface is composed of upper cutter head, upper blade, side gasket of upper cutter head, bottom gasket of upper cutter head, upper knife Head side liner positioning bolt, upper head wedge, upper head wedge compression bolt, upper head side liner rectangular teeth, upper head bottom liner rectangular teeth, upper blade edge, upper blade side Rectangular tooth at the bottom, rectangular tooth at the bottom of the upper blade, lower blade, wedge of the lower blade, pressing bolt of the lower blade, lower blade, assembly of the upper blade, and assembly of the lower blade. (see Fig. 1 upper and lower cutter head assembly).

Structural design of the upper cutter head adjustment device (see the assembly structure diagram of the upper cutter head adjustment device in Figure 2);

⑴The side A of the upper blade is designed to have a slope of 1:100, and rectangular teeth with equidistant 2mm are processed on this slope; the bottom surface B of the upper blade is processed with a slope of 1:50, and rectangular teeth with equidistant 5mm are processed on this slope; (see Figure 4 above blade structure diagram);

The other side of the upper blade is processed into a wedge of 5° (see the assembly structure diagram of the upper cutter head adjustment device in Figure 2);

⑵The C surface of the side gasket of the upper cutter head is fastened to the side of the upper cutter head through the positioning bolts of the side gasket of the upper cutter head. (see figure 3 upper cutter head side liner and upper blade).

The D surface of the side pad of the upper cutter head is processed with an inclination of 1:100, and the rectangular teeth are processed on the slope, and the tooth spacing is 2mm; (see the schematic diagram of the rectangular teeth of the side pad of the upper cutter head in Figure 6)

The rectangular teeth on the side pad of the upper cutter head and the rectangular teeth on the side of the upper blade are tightly engaged when they are in working condition. (see Figure 3 upper cutter head side liner and upper blade)

⑶The side of the bottom pad of the upper cutter head is processed with a slope of 1:50, and the rectangular teeth are processed on the slope, and the tooth spacing is 5mm; (see Figure 5, the bottom of the cutter head is lined with rectangular teeth)

Adjustment method of blade gap and coincidence degree:

When adjusting the gap between the upper and lower blades, only the upper blade and the bottom liner are moved as a whole, and other parts remain in place. For every 2mm (1 tooth position) shift in the length direction of the upper blade, the gap between the upper and lower blades changes by 0.02mm.

When adjusting the coincidence degree, only the bottom liner of the upper cutter head is moved, and other parts remain in the original position. For every 5mm (1 tooth position) of the lengthwise movement of the bottom liner of the upper cutter head, the coincidence degree of the upper and lower blades changes by 0.10mm.

As mentioned above, the quantitative, precise, efficient and online cutting between blades of the crushing edge shearing equipment can be realized.

Gap and coincidence adjustment.

(3) Beneficial effects

By designing the upper blade and the side liner of the upper cutter head as a paired combination wedge surface, and designing the upper blade and the bottom pad of the upper cutter head as a paired combination wedge surface, the above two wedge surfaces are processed with rectangular teeth and fastened with each other. When changing the relative positions of the upper blade and the side gasket of the upper cutter head, and the upper blade and the bottom gasket of the upper cutter head, the quantitative and precise adjustment of the 0.02mm precision gap and 0.10mm precision coincidence adjustment of the upper and lower blades can be completed online respectively.

Description of drawings

The above description is only an overview of the technical solutions of the present invention. In order to understand the technical means of the present invention more clearly and implement them according to the contents of the description, the preferred embodiments of the present invention and accompanying drawings are described in detail below.

Fig. 1 is the perspective view of the general assembly of the upper and lower cutter head in the embodiment of the present invention;

Fig. 2 is a three-dimensional view of the assembly structure of the upper cutter head adjustment in the embodiment of the present invention;

Fig. 3 is an assembly perspective view of the upper cutter head side gasket and the upper blade in the embodiment of the present invention;

Fig. 4 is a structural diagram of the upper blade of the embodiment of the present invention;

Fig. 5 is a schematic diagram of the rectangular teeth of the bottom pad of the upper cutter head according to the embodiment of the present invention;

Fig. 6 is a schematic diagram of rectangular teeth on the side pad of the cutter head according to the embodiment of the present invention;

Fig. 7 is an assembly structure diagram of the existing cutter head.

Legend: 100, upper cutter head assembly; 200, lower cutter head assembly; 1, upper cutter head; 2, upper blade; 3, side gasket; 4, bottom gasket; 5, positioning bolt; 6, first Wedge; 7. First compression bolt; 8. Sawtooth; 9. Liner rectangular tooth; 10. Cutting edge; 11. Side rectangular tooth; 12. Bottom rectangular tooth; 13. Lower blade; 14. Second wedge block; 15, the second compression bolt; 16, the lower cutter head.

Detailed ways

The embodiment of the present application provides a novel wedge sawtooth shredder gap adjustment mechanism to solve the problem that the shredder equipment in the steel rolling production line cannot be adjusted quantitatively, intuitively, accurately, online, and quickly. Through the design The upper blade and the side pad of the upper cutter head are paired and combined wedge surfaces, and the upper blade and the bottom pad of the upper cutter head are designed to be paired and combined wedge surfaces. The wedge surfaces of the two above are processed with rectangular teeth and fastened with each other. When changing the relative positions of the upper blade and the side gasket of the upper cutter head, and the upper blade and the bottom gasket of the upper cutter head, the quantitative and precise adjustment of the 0.02mm precision gap and 0.10mm precision coincidence adjustment of the upper and lower blades can be completed online respectively.

Example

The technical solution in the embodiment of the present application is to solve the problem that the scrapping and shearing equipment in the steel rolling production line cannot be adjusted quantitatively, intuitively, accurately, online, and quickly, and the general idea is as follows:

Aiming at the problems existing in the prior art, the present invention provides a novel wedge-face sawtooth shredder clearance adjustment mechanism. The shredder shear mechanism consists of an upper cutter head assembly 100 and a lower cutter head assembly 200 .

The upper cutter head assembly 100 consists of an upper cutter head 1, an upper blade 2, an upper cutter head side gasket 3, an upper cutter head bottom gasket 4, an upper cutter head side gasket positioning bolt 5, an upper cutter head wedge 6, Clamping bolt of upper cutter head wedge 7, upper cutter head side liner rectangular teeth 8, upper cutter head bottom liner rectangular teeth 9, upper blade cutting edge 10, upper blade side rectangular teeth 11, upper blade bottom rectangular teeth 12 compositions. (See Figure 1 for the assembly of the upper and lower cutter heads)

The side surface of the upper blade 2 has a slope of 1:100, and the side surface is processed with rectangular teeth, and the tooth spacing is 2mm. The bottom surface has a slope of 1:50, and rectangular teeth are processed, and the tooth spacing is 5mm. (See the upper blade structure diagram in Figure 4)

The side liner 3 of the upper cutter head is processed with a slope of 1:100 on one side, and rectangular teeth 8 are processed on the slope.

The spacing is 2mm. The upper cutter head side gasket 3 is fixed with the upper cutter head side gasket positioning bolt 5

Close on the upper cutter head 1. The side liner 3 of the upper cutter head and the wedge surface of the upper blade 2 both have an inclination of 1:100, and the processing distribution of the side liner of the upper cutter head and the upper blade are equidistant rectangular teeth 8 and 11 are attached to each other in working state. (see Figure 3 upper cutter head side liner and upper blade)

The pad 4 at the bottom of the upper cutter head is processed with a slope of 1:50, and the rectangular teeth 9 are processed on the slope, and the tooth spacing is 5 mm. The pad 4 at the bottom of the upper cutter head and the wedge surface at the lower part of the upper blade both have a slope of 1:50, and the rectangular teeth 9 at the bottom of the upper cutter head and the rectangular teeth 12 at the lower part of the upper blade mesh with each other in working condition. As shown in Figure 4 (the structure diagram of the upper blade) and (see Figure 5 on the bottom pad of the cutter head with 4 rectangular teeth).

The following cutter head assembly 200 is made up of lower blade 13, lower cutter head wedge 14, lower blade hold-down bolt 15, and lower cutter head 16. (See Figure 1 for the assembly of the upper and lower cutter heads)

The lower cutter head assembly 200 is used as the benchmark for the adjustment of the gap and coincidence degree of the cutting edge shears. The structure of the lower cutter head remains the same as the original design: the lower blade 13 is designed with a 5° wedge angle, and the 5° wedge angle with the lower cutter head wedge 14 Cooperate, when lower blade compression bolt 15 is fastened, lower blade 13 spatial positions are compressed and determined.

The upper cutter head adjustment device 100 realizes the adjustment of the gap and the degree of coincidence between the upper and lower blades of the edge trimmer. When adjusting the upper and lower blade gaps and overlap, the following blades 13 are used as the benchmark for adjusting the gap. Adjustment method of upper and lower blade gap or coincidence degree:

When the upper blade 2 and the lower blade 13 are assembled or worn, and the clearance adjustment is required, the position of the upper blade 2 and the bottom gasket 4 is moved axially as a whole, and other parts do not move. Every time the upper blade moves a tooth position, the gap changes by 0.02mm; The upper cutter head wedge 6 and the upper cutter head wedge compression bolt 7 are pressed at a wedge angle of 5° to realize full constraint positioning of the upper blade 2 .

When the upper blade 2 and the lower blade 13 are assembled or worn out, and the adjustment of the overlap is required, the pad 4 at the bottom of the upper cutter head is moved axially, and the other parts do not move, and the overlap changes by 0.10 mm for each tooth position moved. Utilize 5 ° wedge angle to press on upper cutter head wedge 6, upper cutter head wedge hold down bolt 7

tight to realize the fully constrained positioning of the upper blade 2 and the pad 4 at the bottom of the upper cutter head.

As mentioned above, quantitative, precise, efficient, online adjustment of blade gap and coincidence can be achieved.

Adopting the combination of oblique wedge and rectangular teeth, it has the characteristics of quantitative, precise and efficient in adjusting the clearance and coincidence adjustment of the cutting edge shears, and can be adjusted online. Wide range of applications, strong practicability and convenient operation.

Finally, it should be noted that obviously, the above-mentioned embodiments are only examples for clearly illustrating the present invention, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. However, the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims (8)

1. A novel wedge surface sawtooth shredder clearance adjustment mechanism, characterized in that the shredder clearance adjustment mechanism comprises: Corresponding upper cutter head assembly (100) and lower cutter head assembly (200); Wherein, the upper cutter head assembly (100) includes an upper cutter head (1), and the outer portion of the upper cutter head (1) is surrounded by a plurality of upper blades (2), and the two sides of the upper blade (2) are respectively provided with There are side liners (3) and first wedges (6); The serrations (8) on the outside of the side liner (3) mesh with the side rectangular teeth (11) on the outer wall of the upper blade (2); The side of the first wedge (6) attached to the upper blade (2) is arranged obliquely, and the inclination is 5°; A bottom liner (4) is installed on the side of the upper blade (2) close to the upper cutter head (1), and the bottom liner (4) is located between the first wedge (6) and the side liner (3) between, and through the bottom rectangular tooth (12) on the bottom of the upper blade (2) meshes with the liner rectangular tooth (9) on the top of the bottom liner (4); Described lower cutter head assembly (200) comprises lower cutter head (16), and the exterior of lower cutter head (16) is surrounded with a plurality of lower blades (13), and one side of described lower blade (13) is equipped with second The wedge (14), and the side where the lower blade (13) sticks to the second wedge (14) is inclined, and the inclination is 5°. 2. A novel wedge sawtooth shredder gap adjustment mechanism according to claim 1, characterized in that: the side of the upper blade (2) facing the side pad (3) has a slope of 1:100 , and the side rectangular teeth (11) on the side are equidistantly distributed with a pitch of 2 mm. 3. A novel wedge sawtooth shredder gap adjustment mechanism as claimed in claim 1, characterized in that: the bottom surface of the upper blade (2) has a slope of 1:50, and the bottom rectangular teeth on the bottom surface ( 12) Distributed equally at intervals of 5mm. 4. A novel wedge sawtooth shredder clearance adjustment mechanism according to claim 1, characterized in that: the side of the side liner (3) facing the upper blade (2) has an inclination of 1:100 , and the serrations (8) on the side are equally spaced at a distance of 2mm; Wherein, the side liner (3) is connected with the upper cutter head (1) through a positioning bolt (5). 5. A novel wedge-face sawtooth shredder gap adjustment mechanism according to claim 1, characterized in that: the top surface of the bottom pad (4) has a slope of 1:50, and the pad on the top surface Pad rectangular teeth (9) are equally spaced with 5mm intervals. 6. A novel wedge-face sawtooth shredder gap adjustment mechanism according to claim 1, characterized in that: the first wedge (6) is connected to the upper cutter head ( 1) connection; Wherein, the upper blade (2) is squeezed between the side liner (3) and the first wedge (6). 7. The gap adjustment mechanism of a new type of wedge sawtooth shredding shears according to claim 1, characterized in that: the upper blade (2) is provided with a cutting edge ( 10). 8. The gap adjustment mechanism of a new type of wedge sawtooth cutting edge shears as claimed in claim 1, characterized in that: the second wedge (14) is connected to the lower cutter head ( 16) connection; Wherein, the lower blade (13) is squeezed between the second pressing bolt (15) and the outer wall of the lower cutter head (16).

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