Shearing knife body and shearing machine

Abstract

The utility model discloses a shearing knife body and shearing machine, the shearing knife body comprises a portal frame and a movable knife mounting seat, the movable knife mounting seat is hung on the portal frame, a plurality of rectangular bosses are arranged on one side edge of the movable knife mounting seat at intervals, two groups of blades are continuously attached to the side edge and the side edge of each rectangular boss, and the two groups of blades are arranged on the portal frame. And the two groups of blades are arranged at different heights. By arranging the two sets of blades, when a workpiece with good toughness is encountered, the two sets of blades are driven to shear the workpiece every time the movable cutter installation base moves, the shearing difficulty is reduced, the blades are arranged to be of an L-shaped structure to be fixed to the connecting face of the rectangular boss and the movable cutter installation base, the fixing points of the blades are located on two different horizontal planes, and the cutting efficiency is improved. And the risk that the blade falls off during shearing is reduced, and the risk that the blade is broken off when the blade is vertically arranged is reduced by arranging the fillet section.

Description

Technical Field

[0001] The utility model belongs to the technical field of shearing machines, and in particular relates to a shearing knife body and a shearing machine. Background Art

[0002] Gantry shear is a scrap metal cutting equipment, which can shear various scrap metals such as aluminum ingots. The structure of the gantry shear includes a main frame, a pusher mechanism connected to the main frame, a shearing knife body and a pressing head arranged on the main frame, etc. When working, the scrap material is pushed to the shearing platform by the pusher mechanism, and then the pressing head presses the material on the shearing platform, and then the scissor seat of the shearing knife body moves downward, and the material is cut by the shear blades arranged on the scissor seat and the shearing platform that shear each other up and down; after each shearing is completed, the pusher mechanism pushes the material forward for a distance, and then the next pressing and shearing are carried out in sequence, so that the larger material is sheared into smaller-sized segmented materials.

[0003] The Chinese patent document with patent number 202021433723.8 discloses a movable knife frame assembly of a gantry shearing machine and a gantry shearing machine. In this technical scheme, a boss is set and the blade is installed on the side of the boss to form a bend. In this technical scheme, the blade is fixed to the same surface by a number of threaded connections. The blade is easily subjected to upward force at the fixed point of the same surface during shearing, causing the blade to break. In addition, a row of blades is mostly arranged on the shear body of the shearing machine in the prior art. When shearing, when encountering materials with good toughness, it is necessary to lift the knife body for repeated shearing. In addition, when shearing, the shearing machine in the prior art has baffles on the front and rear sides of the knife body to abut the workpiece to be sheared before shearing, but the front and rear baffles cannot be adjusted, and the abutment effect is not good for shearing workpieces with different front and rear heights. Therefore, improvement is needed. Utility Model Content

[0004] The utility model aims to provide a shearing knife body and a shearing machine, and the technical problem to be solved is that the shearing knife body of the shearing machine in the prior art is mostly provided with only one row of blades, and when encountering a workpiece with good toughness, the knife body needs to be lifted up several times for repeated shearing.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] In the first aspect, the utility model provides a shearing knife body, including a gantry and a moving knife mounting seat, wherein the moving knife mounting seat is suspended on the gantry, and a plurality of rectangular bosses are arranged at intervals on one side of the moving knife mounting seat, and two groups of blades are continuously attached to the side and the side of each rectangular boss, and the two groups of blades are arranged at different heights.

[0007] By arranging two sets of blades on the moving knife mounting seat, and the two sets of blades are located at different heights, when encountering a workpiece with good toughness during shearing, the blades can be sheared twice each time, reducing the number of times the moving knife mounting seat lifts the same position of the workpiece.

[0008] Optionally, a rounded section is provided in the middle of the blade to form an L-shaped structure, and each L-shaped blade is fixed to two adjacent sides of the rectangular boss, or one section of each L-shaped blade is fixed to the side of the rectangular boss, and the other section is fixed to the side of the movable knife mounting seat where the rectangular boss is provided. By setting the blade as an L-shaped structure and fixing it on the rectangular boss or at the connecting surface between the rectangular boss and the movable knife mounting seat, the fixing point of the blade is on two vertical horizontal planes, thereby reducing the risk of the blade falling off during shearing, and by setting the rounded section, the risk of the blade breaking when it is set vertically is reduced.

[0009] Optionally, the shearing knife body also includes a fixed knife mounting seat, which is arranged at the bottom of the gantry, and a plurality of fixed knife bodies are integrally formed on the fixed knife mounting seat, and a plurality of rectangular bosses form a plurality of grooves with the side of the movable knife mounting seat on which they are arranged, and each fixed knife body corresponds to the groove one by one. The fixed knife body is manufactured by setting an integrated molding technology to improve the manufacturing efficiency and reduce the manufacturing cost. The fixed knife body corresponds to the formed groove, and the movable knife mounting seat is moved toward the fixed knife mounting seat, and the shearing of the workpiece is achieved through the fitting movement of the blade and the fixed knife body.

[0010] Optionally, a cutting edge is provided at the bottom of each blade, and the cutting edge of each blade is directed toward the fixed blade body in a one-to-one correspondence. By providing a cutting edge at the bottom of each blade, the difficulty of shearing is reduced.

[0011] Optionally, the shearing knife body further comprises a buffer pad, and the buffer pad is arranged at the bottom of the fixed knife mounting seat, and the stability of the fixed knife mounting seat during use is increased by arranging the buffer pad.

[0012] In the second aspect, the utility model also provides a shearing machine, comprising the shearing blade body, the first hydraulic cylinder, the second hydraulic cylinder, the fixed plate, the protective front plate and the protective rear plate as described in any one of the first aspects, the movable blade mounting seat of the shearing blade body is fixed at the end of the first hydraulic cylinder, the first hydraulic cylinder is arranged on the gantry and the end passes through the fixed plate, the second hydraulic cylinder is arranged on the gantry and the end is connected to the fixed plate, one side of the fixed plate is fixedly connected to the protective front plate, and the other side is movably connected to the protective rear plate, and the protective front plate and the protective rear plate covers are arranged outside the movable blade mounting seat.

[0013] By arranging a protective front plate and a protective rear plate, the movable knife mounting seat is covered inside to prevent the splashing of the workpiece caused by shearing from causing harm to the surrounding personnel. By movably connecting the protective rear plate with the fixed plate, and arranging a guide cylinder and an abutment column on the protective front plate to drive the movable clamping plate, when the heights of the workpieces to be sheared at both ends of the movable knife mounting seat are different during use, adaptive adjustment can be made to facilitate the abutment shearing of the workpiece.

[0014] Optionally, the inner wall of the gantry is provided with a guide groove, and the side edges of the protective front plate and the protective rear plate are movably inserted into the guide groove. By providing the guide groove, both the protective front plate and the protective rear plate can move in the guide groove.

[0015] Optionally, the protective front plate is provided with a plurality of guide cylinders facing the fixed knife mounting seat, and an abutment column is movably inserted in each guide cylinder, and a movable clamp is fixed to the end of the abutment column, and the two sides of the movable clamp are movably clamped on the side of the protective front plate. By arranging the movable clamp at the end of the abutment column, the position of the movable clamp on the side of the protective front plate can be changed by the movement of the abutment column in the guide cylinder.

[0016] Optionally, the protective rear plate and the movable clamping plate are both provided with a plurality of arc-shaped openings for abutting against the workpiece to be sheared. By providing the arc-shaped openings, the workpiece with a tubular structure can be clamped, pressed and sheared through the arc-shaped openings opened at intervals during use.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The shearing knife body of the utility model is provided with two sets of blades on the moving knife mounting seat, and the two sets of blades are located at different heights. When encountering a workpiece with good toughness during shearing, the blades can be sheared twice each time, reducing the number of times the moving knife mounting seat lifts the same position of the workpiece. By setting the blade as an L-shaped structure and fixing it on the rectangular boss or the connecting surface of the rectangular boss and the moving knife mounting seat, the fixing point of the blade is on two vertical horizontal planes, reducing the risk of the blade falling off during shearing, and by setting the rounded corner section, the risk of the blade breaking caused by the vertical setting is reduced.

[0019] 2. The shearing machine of the utility model covers the movable knife mounting seat inside by arranging a protective front plate and a protective rear plate to avoid the splashing of the workpiece caused by shearing and causing harm to the surrounding personnel. The protective rear plate is movably connected with the fixed plate, and the protective front plate is provided with a guide cylinder and an abutment column to drive the movable clamping plate. When in use, when the heights of the workpieces to be sheared at both ends of the movable knife mounting seat are different, adaptive adjustment can be made to facilitate the abutment shearing of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of the first embodiment of the utility model;

[0021] Figure 2It is an enlarged schematic diagram of the shearing knife body structure of the utility model;

[0022] Figure 3 It is an enlarged schematic diagram of the blade structure of the utility model;

[0023] Figure 4 This is a structural schematic diagram of the second embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of the connection of the fixing plate in the second embodiment of the present utility model;

[0025] Figure 6 This is a schematic diagram of the protective front plate structure of the second embodiment of the utility model.

[0026] In the figure: 1-movable knife mounting seat, 2-fixed knife mounting seat, 3-rectangular boss, 4-blade, 5-cutting edge, 6-radius section, 7-fixed knife body, 8-buffer pad, 9-first hydraulic cylinder, 10-second hydraulic cylinder, 11-guide groove, 12-fixed plate, 13-protective front plate, 14-protective rear plate, 15-slide groove, 16-arc mouth, 17-guide cylinder, 18-abutment column, 19-movable splint. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model. Embodiment 1

[0028] like Figures 1 to 3 As shown, the present embodiment provides a shearing knife body, including a gantry, a moving knife mounting seat 1 and a fixed knife mounting seat 2, wherein the moving knife mounting seat 1 is fixed on the gantry crossbeam in the prior art, wherein the fixed knife mounting seat 2 is fixed on the bottom of the gantry, in the present embodiment, the moving knife mounting seat 1 is fixed on the gantry crossbeam by a hydraulic cylinder in the prior art, and the moving knife mounting seat 2 moves toward the fixed knife mounting seat 2 accordingly, wherein the moving knife mounting seat 1 forms a plurality of rectangular bosses 3 by opening a plurality of rectangular grooves along one side edge, in the present embodiment, the side edge and each side edge of the rectangular boss 3 are fixedly mounted with a blade 4, wherein the blade 4 is at least two groups and is respectively located at different heights of the rectangular boss 3.

[0029] When in use, the movement of the hydraulic cylinder drives the movable knife mounting seat 1 to move up and down toward the fixed knife mounting seat 2, thereby shearing the workpiece to be sheared placed on the fixed knife mounting seat 2. By installing blades 4 at different heights, the workpiece with better toughness can be sheared twice, reducing the number of times the hydraulic cylinder drives the movable knife mounting seat 1 to move up and down, thereby reducing energy consumption.

[0030] refer to Figure 2As shown, in this embodiment, four rectangular bosses 3 are formed by five grooves on the side of the movable knife mounting seat 1, and a blade 4 is fixed on each rectangular boss 3, wherein the blade 4 is preferably an L-shaped structure. In this embodiment, the L-shaped blade 4 is formed by an integrally formed rounded section 6 at the bending part of the L-shaped blade 4, and each blade 4 is fixed on two adjacent side surfaces of the rectangular boss 3 or on the side adjacent to the rectangular boss 3 and the movable knife mounting seat 1. In this embodiment, the two straight sections of the L-shaped blade 4 are fixedly connected by bolts in the prior art, and in this embodiment, each blade 4 is provided with a cutting edge 5 facing the fixed knife mounting seat 2.

[0031] In this embodiment, the groove on the side of the movable blade mounting seat 1 and the adjacent rectangular boss 3 are provided with a rounded structure corresponding to each other, so that the blade 4 can be installed in a close fit.

[0032] When in use, the blade 4 is set as an L-shaped structure and fixed on the connecting surface of the rectangular boss 3 and the movable knife mounting seat 1, so that the fixing point of the blade 4 is on two different horizontal planes, thereby reducing the risk of the blade 4 falling off during shearing, and by setting the rounded corner section 6, the risk of the blade 4 breaking when it is set vertically is reduced.

[0033] In the present embodiment, the fixed knife mounting seat 2 is integrally formed with a fixed knife body 7 that protrudes upward, wherein the fixed knife body 7 corresponds one-to-one with the groove provided on the movable knife mounting seat 1. In the present embodiment, the fixed knife mounting seat 2 is preferably integrally formed with steel material in the prior art to form a blade, wherein the blade edge faces upward and corresponds one-to-one with the cutting edge 5 of the blade 4.

[0034] When in use, the hydraulic cylinder moves up and down to drive the movable knife mounting seat 1 to move, and the blade 4 located on the rectangular boss 3 shears the workpiece to be sheared placed on the fixed knife mounting seat 2. By adopting two sets of blades 4, the hydraulic cylinder is reduced from lifting multiple times to shear the workpiece at the same position.

[0035] In this embodiment, a buffer pad 8 is provided between the fixed knife mounting seat 2 and the bottom of the gantry. The buffer pad 8 is a wear-resistant layer, a rubber layer and a support layer arranged in sequence from top to bottom, wherein the wear-resistant layer and the support layer can be made of alloy steel in the prior art. By adopting a multi-layer structure, the stability of the fixed knife mounting seat 2 during shearing and the increase of service life are achieved. Embodiment 2

[0036] like Figures 4 to 6As shown, on the basis of the first embodiment, the present embodiment can also be designed as follows, including the shearing knife body, the first hydraulic cylinder 9, the second hydraulic cylinder 10, the fixed plate 12, the protective front plate 13 and the protective rear plate 14 in the first embodiment, wherein the movable knife mounting seat 1 of the shearing knife body is fixed to the cross beam of the gantry through the first hydraulic cylinder 9, and the fixed knife mounting seat 2 of the shearing knife body is fixed to the bottom of the gantry, wherein the end of the first hydraulic cylinder 9 slides through the bottom of the fixed plate 12 and is fixed to the movable knife mounting seat 1, one end of the second hydraulic cylinder 10 is fixed to the cross beam of the gantry, and the other end is fixedly connected to the fixed plate 12, and in the present embodiment, the protective front plate 13 and the protective rear plate 14 are covered in front and behind the movable knife mounting seat 1.

[0037] When in use, the first hydraulic cylinder 9 moves up and down to drive the movable knife mounting seat 1 to shear the workpiece to be sheared. The principle is the same as that in Example 1, so it is not repeated here. The protective front plate 13 and the protective rear plate 14 shield the movable knife mounting seat 1 to prevent the splashing of materials caused by shearing from causing harm to the surrounding personnel.

[0038] refer to Figure 4 and Figure 5 As shown, in this embodiment, a pair of inner walls of the gantry are provided with two pairs of guide grooves 11, wherein both ends of the protective front plate 13 and the protective rear plate 14 are slidably inserted into the two pairs of guide grooves 11, wherein both ends of the protective front plate 13 and the anti-slip rear plate 14 can be inserted into the guide grooves 11 by means of protrusions in the prior art. In this embodiment, one end of the fixed plate 12 is fixed to the protective front plate 13, and the other end is slidably connected to the protective rear plate 14.

[0039] When in use, two pairs of guide grooves 11 are provided to be slidably connected with the protective front plate 13 and the protective rear plate 14, and the second hydraulic cylinder 10 drives the movement of the fixed plate 12 to realize the lifting and lowering of the protective front plate 13 and the protective rear plate 14, thereby realizing the cover protection of the movable knife mounting seat 1.

[0040] refer to Figure 5 As shown, in this embodiment, a pair of slide grooves 15 are provided on the surface where the protective rear plate 14 and the fixed plate 12 are connected, wherein the end of the fixed plate 12 is connected to the slide groove 15 through a fixed slider to realize a movable connection.

[0041] By providing the slide groove 15 , the connection end of the fixing plate 12 can move in the slide groove 15 , so as to facilitate adaptive adjustment when facing different heights of the workpieces to be sheared.

[0042] refer to Figure 5 and Figure 6As shown, in this embodiment, the protective front plate 13 is provided with a notch of a rectangular structure, and four guide cylinders 17 are preferably fixed on the notch downward toward the fixed knife mounting seat 2, wherein the guide cylinders 17 are realized by welding technology in the prior art, and in this embodiment, each guide cylinder 17 is downwardly sleeved with an abutment column 18, wherein the abutment column 18 and the guide cylinder 17 are filled with springs to achieve connection, and a movable splint 19 is also fixed to the end of the abutment column 18, wherein the two ends of the movable splint 19 are also slidably engaged with the side edges of the notch of the protective front plate 13.

[0043] When in use, the workpiece to be sheared enters from the side of the protective rear plate 14, the movement of the second hydraulic cylinder 10 drives the fixed plate 12 to move upward, one side of the fixed plate 12 drives the protective front plate 13 to lift upward, and the other side of the fixed plate 12 slides to the highest point in the slide groove 15 and drives the protective rear plate 14 to lift upward. After the workpiece is transported to the right place, the second hydraulic cylinder 10 drives the fixed plate 12 to move downward, and the protective front plate 13 and the protective rear plate 14 exert low pressure on the workpiece on the fixed knife mounting seat 2, which is convenient for shearing of the shearing knife body.

[0044] If the workpiece on the protective front plate 13 side is higher than that on the protective rear plate 14 side, the fixed plate 12 is located in the upper half of the slide 15; if the workpiece on the protective front plate 13 side is lower than that on the protective rear plate 14 side, the fixed plate 12 is located in the lower half of the slide 15, wherein the workpiece on the protective front plate 13 side is pressed by the second hydraulic cylinder 10, and the workpiece on the protective rear plate 14 side is pressed by the gravity of the protective front plate 14 itself.

[0045] In the present embodiment, the movable splint 19 and the protective rear plate 14 are both spaced apart with a plurality of arc-shaped openings 16, wherein the movable splint 19 and the protective rear plate 14 are both opened near the end face of the workpiece to be sheared, and in the present embodiment, the plurality of arc-shaped openings 16 may be arc-shaped openings 16 of the same specification, or may be a plurality of arc-shaped openings 16 of different curvatures. When in use, the workpiece with a tubular structure is clamped, pressed and sheared through the arc-shaped openings 16 spaced apart between the movable splint 19 and the protective rear plate.

[0046] Working principle: The workpiece to be sheared is transported to the fixed knife mounting seat 2 on the gantry. At this time, the first hydraulic cylinder 9 and the second hydraulic cylinder 10 are started to drive the movable knife mounting seat 1 and the fixed plate 12 to move. During the downward pressing process, the protective rear plate 14 and the protective front plate 13 successively abut against the fixed workpiece and surround the workpiece in the middle. At this time, the blade 4 fixed on the side of the rectangular boss 3 on the movable knife mounting seat 1 shears the workpiece. By adopting two rows of blades 4 and different fixed surfaces, the blade installation stability is increased while the number of shearing times of the blade 4 on the workpiece at the same position is reduced. After shearing, the first hydraulic cylinder 9 and the second hydraulic cylinder 10 are started to drive the movable knife mounting seat 1 and the fixed plate 12 to move upward.

[0047] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which all fall within the protection of the present invention.

Claims

1. A shearing blade, characterized in that: The movable knife mounting seat (1) comprises a gantry and a movable knife mounting seat (1), wherein the movable knife mounting seat (1) is suspended on the gantry, and a plurality of rectangular bosses (3) are arranged at intervals on one side of the movable knife mounting seat (1), and two groups of blades (4) are continuously attached to the side and the side of each rectangular boss (3), and the two groups of blades (4) are arranged at different heights.

2. A shearing blade according to claim 1, characterized in that: A rounded section (6) is provided in the middle of the blade (4) to form an L-shaped structure; each L-shaped blade (4) is correspondingly fixed to two adjacent sides of the rectangular boss (3); or one section of each L-shaped blade (4) is fixed to a side of the rectangular boss (3) and the other section is fixed to a side of a movable blade mounting seat (1) on which the rectangular boss (3) is provided.

3. A shearing blade according to claim 2, characterized in that: The shearing knife body also includes a fixed knife mounting seat (2), the fixed knife mounting seat (2) is arranged at the bottom of the gantry, and a plurality of fixed knife bodies (7) are integrally formed on the fixed knife mounting seat (2), and a plurality of rectangular bosses (3) and the side of the movable knife mounting seat (1) on which they are arranged form a plurality of grooves, and each fixed knife body (7) faces the groove in a one-to-one correspondence.

4. A shearing blade according to claim 3, characterized in that: A cutting edge (5) is formed at the bottom of each blade (4), and the cutting edge (5) of each blade (4) faces the fixed blade body (7) in a one-to-one correspondence.

5. A shearing blade according to claim 4, characterized in that: The shearing knife body further comprises a buffer pad (8), wherein the buffer pad (8) is arranged at the bottom of the fixed knife mounting seat (2).

6. A shearing machine, characterized in that: The invention comprises a shearing knife body, a first hydraulic cylinder (9), a second hydraulic cylinder (10), a fixed plate (12), a protective front plate (13) and a protective rear plate (14) as described in any one of claims 1 to 4, wherein a movable knife mounting seat (1) of the shearing knife body is fixed to the end of the first hydraulic cylinder (9), the first hydraulic cylinder (9) is arranged on a gantry and the end thereof passes through the fixed plate (12), the second hydraulic cylinder (10) is arranged on the gantry and the end thereof is connected to the fixed plate (12), one side of the fixed plate (12) is fixedly connected to the protective front plate (13), and the other side is movably connected to the protective rear plate (14), and the protective front plate (13) and the protective rear plate (14) are covered on the outside of the movable knife mounting seat (1).

7. A shearing machine according to claim 6, characterized in that: The inner wall of the gantry is provided with a guide groove (11), and the side edges of the protective front plate (13) and the protective rear plate (14) are movably engaged in the guide groove (11).

8. A shearing machine according to claim 7, characterized in that: The protective front plate (13) is provided with a plurality of guide cylinders (17) facing the fixed knife mounting seat (2), each guide cylinder (17) is movably inserted with an abutment column (18), and a movable clamping plate (19) is fixed to the end of the abutment column (18), and the two sides of the movable clamping plate (19) are movably clamped on the side edges of the protective front plate (13).

9. A shearing machine according to claim 8, characterized in that: The protective rear plate (14) and the movable clamping plate (19) are both provided with a plurality of arc-shaped openings (16) for abutting against the workpiece being sheared.

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