Upper shearing assembly of multi-knife scissors

Abstract

The upper shearing assembly comprises an upper tool apron, a plurality of shearing blades are installed at the bottom of the upper tool apron, the vertical orthographic projection of the shearing blades is a parallelogram, an installation groove is formed in the lower portion of the upper tool apron, and the top of the installation groove is a horizontal plane. The shearing blades are installed in the installation grooves through blade cushion blocks, the whole shearing blades are installed in an inclined mode, a plurality of installation grooves are formed in the upper tool apron, and the tops of the installation grooves rise in sequence; the inclination directions of the shearing blades in the adjacent installation grooves of the upper tool apron relative to the horizontal plane are opposite, the installation directions of the shearing blades in the adjacent installation grooves are mirror images, and the shearing blades in the adjacent installation grooves can be installed in an interchanging mode after being turned over. According to the upper shearing assembly of the multi-knife shear, through simple structural adjustment, the service life of the shearing blades is remarkably prolonged, and the use and maintenance cost of multi-knife shear equipment is reduced.

Description

Technical Field

[0001] This utility model relates to an upper shearing assembly used in a multi-blade shearing device, belonging to the field of mechanical equipment. Background Technology

[0002] Chinese Patent Publication No. CN114012166B discloses a sheet metal shearing system and its serrated multi-blade shear, and Chinese Patent Publication No. CN216541157U discloses a serrated multi-blade shearing structure. These disclose a serrated multi-blade shearing device that, through the combination of the upper shearing component and the lower blade holder, can shear wide materials into small pieces in one go, with high shearing efficiency. Moreover, compared with the concave-convex multi-blade shear (Chinese Patent Publication No. CN103878433B, a continuous blade longitudinal and transverse composite shearing machine), there is no enclosed space, which facilitates the discharge of material blocks and avoids squeezing the blades.

[0003] To increase the pressure at the shearing section, the blade of the upper shearing assembly is generally inclined relative to the horizontal plane, resulting in a parallelogram structure for the shearing blade. This design requires the upper blade holder to be machined with an inclined groove to hold the blade, increasing the machining difficulty. At the same time, because the blade uses a parallelogram design, only two sides can be used as shearing edges. After flipping, the inclination direction is reversed, so it cannot be used. In other words, the utilization rate of the blade is low, increasing the cost of use and maintenance.

[0004] Therefore, it is necessary to improve the structure of the upper shearing assembly in order to address the aforementioned deficiencies in manufacturing and use. Utility Model Content

[0005] The purpose of this invention is to provide a shearing assembly for a multi-blade scissor, which is installed inside the multi-blade scissor equipment, allowing the shearing blades to be reused and have a longer service life, thereby reducing the cost of use and maintenance; and the structure of the upper blade holder has been adjusted to reduce the difficulty of processing and manufacturing.

[0006] To achieve the above-mentioned utility model objectives, this utility model provides a multi-blade scissor upper shearing assembly, including an upper blade holder, with a plurality of shearing blades mounted on the bottom of the upper blade holder, and the horizontal projection of all the shearing blades forming a continuous serrated shearing blade.

[0007] The vertical orthographic projection of the shearing blade is a parallelogram, and the vertical lateral projection of the shearing blade is a rectangle. The shearing blade forms four shearing blades at the top and bottom, namely the first shearing blade, the second shearing blade, the third shearing blade, and the fourth shearing blade.

[0008] The lower part of the upper blade holder is provided with a mounting groove, and the top of the mounting groove is a horizontal plane; the shearing blade is installed in the mounting groove by a blade pad, and a blade pad is provided between the shearing blade and the top of the mounting groove;

[0009] The top surface of the blade pad is a horizontal surface, the bottom surface of the blade pad is an inclined surface, and the shear blade is flush with the bottom surface of the blade pad;

[0010] The shear blade is integrally installed in an inclined manner, and the included angle between the shear blade and the horizontal surface is alpha; the side edge and the side surface of the shear blade are vertically arranged;

[0011] One shear blade or two shear blades arranged in a vertical and horizontal manner can be simultaneously installed in one mounting groove on the upper blade seat; a plurality of mounting grooves are formed on the upper blade seat, and the top portions of the plurality of mounting grooves are sequentially raised;

[0012] The center heights of all the vertical shear blades on the upper blade seat are sequentially raised, and the center heights of all the horizontal shear blades on the upper blade seat are sequentially raised;

[0013] The shear blades in the adjacent mounting grooves on the upper blade seat are oppositely inclined relative to the horizontal surface, the installation directions of the shear blades in the adjacent mounting grooves are mirror images of each other, and the shear blades in the adjacent mounting grooves can be interchangeably installed after being flipped.

[0014] As a further improvement of the utility model, two adjacent blade pads installed in the mounting groove of the same upper blade seat are vertically crossed at the intersection.

[0015] Further, the blade pad forms a protrusion and a groove in the vertical direction at the intersection;

[0016] The protrusion of the blade pad is clamped into the groove of the adjacent blade pad;

[0017] The protrusion of the adjacent blade pad is clamped into the groove of the blade pad.

[0018] As a further improvement of the utility model, a horizontal through hole is arranged in the middle of the shear blade for the fixed screw to pass through;

[0019] A counterbore is arranged on both sides of the through hole; the counterbore is a hinge hole;

[0020] A pin hole is arranged on the outside of the mounting screw hole of the upper blade seat for screwing in the fixed screw, and the pin hole is a hinge hole;

[0021] The pin hole on the upper blade seat and the counterbore on the inner side of the shear blade are in communication and coaxial and have the same inner diameter;

[0022] A pin cylinder is arranged in the pin hole and the counterbore in communication therewith;

[0023] The outer side of the pin cylinder is a cylindrical surface and is in transition fit with the hinge hole;

[0024] The inner side of the pin cylinder is provided with a through hole for the fixed screw to pass through.

[0025] Further, an inner and outer threaded sleeve is arranged;

[0026] The inner and outer threaded sleeve is a cylindrical sleeve, which has a cylindrical body, the outer wall of the cylindrical body is provided with a connecting outer thread, and the inner wall of the cylindrical body is provided with a connecting inner thread;

[0027] The connecting outer thread is screwed into the mounting screw hole;

[0028] The thread of the fixing screw is screwed into the connecting inner thread.

[0029] As a further improvement of the utility model, the upper part of the upper tool holder is provided with a casting cavity on both sides.

[0030] The upper shearing assembly of the multi-cutter shear of the utility model has the advantages that the structure of the upper tool holder is improved, the mounting groove is arranged, and the machining is facilitated; then the inclination angle of the shearing blade is adjusted by using the blade pad block, the inclination directions of the shearing blades in the adjacent mounting grooves of the upper tool holder are opposite relative to the horizontal plane, the mounting directions of the shearing blades in the adjacent mounting grooves are mirror images of each other, the shearing blades in the adjacent mounting grooves can be installed by being turned over and interchanged, so that the four blades of the shearing blade can be used, and the service life of the shearing blade is remarkably improved by simple rotation and turning over and interchanging during equipment maintenance. Meanwhile, the structure of the blade pad block is improved, the stress area of the blade pad block is increased, and the service life of the blade pad block is improved.

[0031] The upper shearing assembly of the multi-cutter shear of the utility model has the advantages that the structure is simple, easy to process and realize; and because the shearing blade is installed by the blade pad block, the blade pad block with different heights and sizes is matched and equipped to realize the replacement and installation of the shearing blade after grinding and thinning, and the service life of the shearing blade is further improved.

[0032] The upper shearing assembly of the multi-cutter shear of the utility model has the advantages that the service life of the shearing blade is remarkably increased by simple structure adjustment, and the use and maintenance cost of the multi-cutter shear equipment is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 The utility model discloses a kind of upper shearing assembly of multi-cutter shear, and its application situation schematic diagram in multi-cutter shear equipment is shown in the figure;

[0034] Figure 2 The utility model discloses a kind of upper shearing assembly of multi-cutter shear, and its overall structure schematic diagram is shown in the figure; Figure 1 ;

[0035] Figure 3 The utility model discloses a kind of upper shearing assembly of multi-cutter shear, and its overall structure schematic diagram is shown in the figure; Figure 2 ;

[0036] Figure 4 The utility model discloses a kind of upper shearing assembly of multi-cutter shear, and its overall structure schematic diagram is shown in the figure; Figure 3 ;

[0037] Figure 5 It is a partial enlarged view of the upper shearing assembly of the multi-blade shear of the utility model;

[0038] Figure 6 It is a structure view of the blade pad;

[0039] Figure 7 It is a main view of the overall structure of the blade;

[0040] Figure 8 It is a sectional view of the blade;

[0041] Figure 9 It is a partial sectional view of the upper shearing assembly of the multi-blade shear of the utility model;

[0042] Figure 10 It is an installation and fixing view of the shearing blade on the upper blade holder of the utility model;

[0043] Figure 11 It is a plan view of the upper shearing assembly of the multi-blade shear of the utility model; the A view angle is Figure 2 , the B view angle is Figure 3 , and the C view angle is Figure 4 . DETAILED DESCRIPTION

[0044] The specific embodiments of the utility model are further described in detail below with reference to the drawings.

[0045] As shown in Figure 1 , the upper shearing assembly of the multi-blade shear of the utility model is applied to the multi-blade shear equipment, and is consistent with the existing multi-blade shear structure, that is, comprises a rack 11, a lower blade holder assembly 12, a shearing oil cylinder 13, and the upper shearing assembly 2 of the multi-blade shear of the utility model; the rack 11 is a portal frame, and the lower part is provided with the lower blade holder assembly 12; the upper surface of the lower blade holder assembly 12 is kept horizontal, can be connected with a material box, and facilitates material feeding; the upper part of the rack 11 is provided with the upper shearing assembly 2 of the multi-blade shear of the utility model; the upper shearing assembly 2 of the multi-blade shear can move up and down along the rack 11; when moving upwards, the upper shearing assembly 2 of the multi-blade shear is away from the lower blade holder assembly 12, so that the material feeding is facilitated; when moving downwards, the upper shearing assembly 2 of the multi-blade shear approaches the lower blade holder assembly 12 and is engaged with the lower blade holder assembly 12, so that the material shearing is realized. The top of the rack 11 is provided with a plurality of shearing oil cylinders 13; the piston rod of the shearing oil cylinder 13 extends downward and is connected with the upper shearing assembly 2 of the multi-blade shear, so that the upper shearing assembly 2 of the multi-blade shear is driven to move up and down, and the material shearing operation is realized.

[0046] The improvement of the utility model is that the structure of the upper shearing assembly 2 is improved; as Figure 2 、 Figure 3 、 Figure 4As shown, the upper shearing assembly 2 still comprises the upper knife seat 21, and the bottom of the upper knife seat 21 still is provided with a plurality of shearing blades 4, so as to form a continuous zigzag shearing edge in horizontal projection, which matches the zigzag shearing edge of the lower knife seat assembly 12 to realize shearing operation on the material.

[0047] In order to realize repeated use of the shearing blades 4 after being turned over, reduce the number of blades, and improve the reliability of blade installation and use, the shearing blade 4 is still designed as a parallelogram structure in vertical section / projection, as shown in the figure, that is, four shearing edges are formed on the upper and lower parts of the shearing blade 4, as shown in the figure, which are respectively a first shearing edge 43, a second shearing edge 44, a third shearing edge 45, and a fourth shearing edge 46. Figure 7 Figure 8

[0048] In order to make the shearing blade 4 form an inclined shearing edge on the bottom after being installed on the upper knife seat 21, the shearing blade 4 needs to be installed in a whole inclined manner. At this time, the lower part of the upper knife seat 21 is processed to form an installation groove, and the shearing blade 4 is installed in the installation groove. In order to reduce the processing difficulty of the upper knife seat 21, the top 22 of the installation groove is processed to form a horizontal surface, so that the top 22 of the installation groove is parallel to the top of the upper knife seat 21, which is convenient for processing. A blade pad 3 is arranged between the shearing blade 4 and the top 22 of the installation groove, the top surface of the blade pad 3 is a horizontal surface, and the bottom surface of the blade pad 3 is an inclined surface. The shearing blade 4 is flush with the bottom surface of the blade pad 3, so that the shearing blade 4 is installed in a whole inclined manner, and the included angle between the shearing edge and the horizontal surface is α. At this time, the side and the side surface of the shearing blade 4 are in a vertical state, which is convenient for the connection of adjacent two shearing blades 4.

[0049] The installation groove on the upper knife seat 21 takes the installation space of two shearing blades 4 as a group, that is, one vertical and one horizontal form a group. The installation groove located at the edge of the upper knife seat 21 can only install one shearing blade 4. A plurality of installation grooves are formed on the upper knife seat 21, and the tops 22 of the plurality of installation grooves are sequentially raised from left to right or from right to left, so that the center height of the longitudinal shearing blade 4 and the center height of the transverse shearing blade 4 gradually increase after the shearing blade 4 is installed in the installation groove.

[0050] Among them, the shearing along the feeding direction of the material is vertical, and the blade corresponding to the vertical shearing is a vertical shearing blade. The shearing perpendicular to the feeding direction of the material is horizontal, and the blade corresponding to the horizontal shearing is a horizontal shearing blade.

[0051] ​​The further improvement of the utility model is that the shape of the blade pad block 3 is adjusted, especially the shape of the two blade pad blocks 3 above the two transverse shearing blades in the adjacent group of installation grooves and the shape of the two blade pad blocks 3 above the two longitudinal shearing blades, so that the shearing blades 4 in the adjacent group of installation grooves are relatively arranged in the inclined direction relative to the horizontal plane; specifically, the two adjacent longitudinal shearing blades 4 are inclined forward (the opening faces forward) and backward (the opening faces backward) relative to the inclined direction of the horizontal plane; correspondingly, the two adjacent transverse shearing blades 4 are inclined leftward and rightward relative to the inclined direction of the horizontal plane.

[0052] Therefore, the two adjacent longitudinal shearing blades 4 are mirror images of each other, and the two adjacent transverse shearing blades 4 are also mirror images of each other, that is, the shearing blade 4 is provided with a first shearing blade 41 and a second shearing blade 42, both of which are parallelogram structures but are mirror images of each other. Figure 7 、 Figure 8 When the four shearing edges of the shearing blade 4 are blunt, the shearing blade 4 can be returned to the factory for regrinding to form shearing edges again; after the shearing blade 4 is ground, the upper and lower dimensions will be thinned, at which time, the installation can be realized by adjusting the size of the blade pad block 3 or adding a gasket; the service life of the shearing blade 4 is further increased.

[0053] After the above design, the four edges of the shearing blade 4 can be used as shearing edges, and during equipment maintenance, the service life of the shearing blade 4 is significantly improved through simple rotation and inversion.

[0054] When the four shearing edges of the shearing blade 4 are blunt, the shearing blade 4 can be returned to the factory for regrinding to form shearing edges again; after the shearing blade 4 is ground, the upper and lower dimensions will be thinned, at which time, the installation can be realized by adjusting the size of the blade pad block 3 or adding a gasket; the service life of the shearing blade 4 is further increased. The shearing blade 4 needs to bear a large shearing force, and is generally made of tool steel or alloy steel, which has a high material cost, so effectively increasing the number of times of reuse of the shearing blade 4 can effectively reduce the use and maintenance cost of the multi-blade shearing equipment.

[0055] The further improvement of the utility model is that two adjacent blade pads 3 installed in the installation groove of the same group of upper knife holder 21 are vertically crossed at the intersection, that is, as shown in the figure, the blade pad 3 is provided with a protrusion 31 and a groove 32 in the vertical direction at the intersection, the protrusion 31 of the blade pad 3 is clamped into the groove 32 of the adjacent blade pad 3, and the protrusion 31 of the adjacent blade pad 3 is clamped into the groove 32 of the blade pad 3. Figure 6

[0056] When the shearing blade 4 is in shearing operation, the vertical upward thrust is mainly generated on the blade pad 3; after the vertical crossing design of the blade pad 3 is adopted, the stress area of the blade pad 3 in the vertical direction can be increased, so that the blade pad 3 is prevented from being damaged too fast, and the service life is improved. At the same time, the blade pad 3 will transmit part of the vertical thrust to the upper knife holder 21, and after the vertical crossing design is adopted, the pressure of the blade pad 3 transmitted to the upper knife holder 21 can also be reduced, and the service life of the upper knife holder 21 is improved.

[0057] The further improvement of the utility model is that, as shown in the figure, the shearing blade 4 is provided with a horizontal through hole 48 in the middle, which is used for passing through the fixing screw 5; the through hole 48 is provided with a counterbore 49 on both sides, so that the cap head of the fixing screw 5 can be sunk into the counterbore 49, and the outer surface of the shearing blade 4, the outer surface of the blade pad 3 and the outer surface of the upper knife holder 21 can be kept flat. Further, the counterbore 49 is a hinge hole; the upper knife holder 21 is provided with a pin hole 24 outside the mounting screw hole 23 of the fixing screw 5, the pin hole 24 is also a hinge hole, and communicates with the counterbore 49 on the inner side of the shearing blade 4; the pin cylinder 6 is arranged in the pin hole 24 and the counterbore 49; the outer side of the pin cylinder 6 is a cylindrical surface, which is in transition fit with the hinge hole; the inner side of the pin cylinder 6 is provided with a through hole for the fixing screw 5 to pass through. Therefore, when the shearing blade 4 is in shearing operation, the upward thrust generated by the shearing blade 4 is mainly borne by the pin cylinder 6 and applied to the pin hole 24, so that the fixing screw 5 is prevented from being excessively stressed, so as to avoid damage to the fixing screw 5 or the screw thread in the mounting screw hole 23, so that the fixing screw 5 cannot be removed from the mounting screw hole 23, and the replacement of the shearing blade 4 is difficult. Figure 8 Figure 9

[0058] Further, as shown in the figure, the shearing blade 4 is provided with a horizontal through hole 48 in the middle, which is used for passing through the fixing screw 5; the through hole 48 is provided with a counterbore 49 on both sides, so that the cap head of the fixing screw 5 can be sunk into the counterbore 49, and the outer surface of the shearing blade 4, the outer surface of the blade pad 3 and the outer surface of the upper knife holder 21 can be kept flat. Further, the counterbore 49 is a hinge hole; the upper knife holder 21 is provided with a pin hole 24 outside the mounting screw hole 23 of the fixing screw 5, the pin hole 24 is also a hinge hole, and communicates with the counterbore 49 on the inner side of the shearing blade 4; the pin cylinder 6 is arranged in the pin hole 24 and the counterbore 49; the outer side of the pin cylinder 6 is a cylindrical surface, which is in transition fit with the hinge hole; the inner side of the pin cylinder 6 is provided with a through hole for the fixing screw 5 to pass through. Therefore, when the shearing blade 4 is in shearing operation, the upward thrust generated by the shearing blade 4 is mainly borne by the pin cylinder 6 and applied to the pin hole 24, so that the fixing screw 5 is prevented from being excessively stressed, so as to avoid damage to the fixing screw 5 or the screw thread in the mounting screw hole 23, so that the fixing screw 5 cannot be removed from the mounting screw hole 23, and the replacement of the shearing blade 4 is difficult. Figure 10 ​​​As shown, the inner and outer threaded sleeve 7 is a cylindrical sleeve, which has a cylindrical body 71, and the outer wall of the cylindrical body 71 is provided with a connecting external thread 72, and the inner wall of the cylindrical body 71 is provided with a connecting internal thread 73; wherein the connecting external thread 72 is screwed into the mounting screw hole 23, and the inner and outer threaded sleeve 7 is fixed in the upper tool holder 21, and the thread of the fixing screw 5 is screwed into the connecting internal thread 73, thereby realizing the fixing of the shearing blade 4. By arranging the inner and outer threaded sleeve 7, the mounting screw hole 23 of the upper tool holder 21 can be further protected, and when the connecting internal thread 73 is damaged, the inner and outer threaded sleeve 7 can be directly replaced, thereby completing the repair of the upper tool holder 21.

[0059] Further improvement of the utility model is that the upper tool holder 21 is a casting part, which is processed and the weight is generally more than 1 ton; in order to reduce the driving force of the shearing oil cylinder 13, the upper tool holder 21 is provided with a cavity 25 in the upper part during casting, thereby realizing weight reduction. Figure 11 As shown, in this way, the self weight of the upper tool holder 21 is reduced, so that the shearing oil cylinder 13 is more stable during driving, and is reliable; meanwhile, the service life of the shearing oil cylinder 13 is prolonged, thereby reducing the use and maintenance cost of the whole equipment.

[0060] The above has carried out the specific description to the preferred embodiment of the utility model, but the utility model is not limited to the described embodiment, and the skilled person in the art can make various equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the range defined by the claims of the present application.

Claims

1. A multi-blade shearing assembly, comprising an upper knife holder, a plurality of shearing blades mounted on the bottom of the upper knife holder, and the horizontal projection of all the shearing blades forming a continuous zigzag shearing edge. characterized in that The vertical projection of the shearing blade is a parallelogram, the vertical side projection of the shearing blade is a rectangle, and the upper and lower of the shearing blade form four shearing edges, namely a first shearing edge, a second shearing edge, a third shearing edge, and a fourth shearing edge. The lower part of the upper knife holder is provided with a mounting groove, and the top of the mounting groove is a horizontal plane; the shearing blade is mounted in the mounting groove through a blade pad, and the blade pad is arranged between the shearing blade and the top of the mounting groove. The top surface of the blade pad is a horizontal plane, and the bottom surface of the blade pad is an inclined plane; the shearing blade is flush with the bottom surface of the blade pad. The shearing blade is installed in an inclined manner, and the included angle between the shearing edge of the shearing blade and the horizontal plane is α; the side edge and the side surface of the shearing blade are vertical. One shearing blade or two shearing blades arranged in a vertical and horizontal manner can be simultaneously mounted in one mounting groove on the upper knife holder; a plurality of mounting grooves are arranged on the upper knife holder, and the top of the plurality of mounting grooves is sequentially raised. The center height of all the vertical shearing blades on the upper knife holder is sequentially raised, and the center height of all the horizontal shearing blades on the upper knife holder is sequentially raised. The shearing blades in the adjacent mounting grooves on the upper knife holder are oppositely inclined relative to the horizontal plane, the mounting directions of the shearing blades in the adjacent mounting grooves are mirror images of each other, and the shearing blades in the adjacent mounting grooves can be exchanged after being flipped.

2. A multi-knife trim and shear assembly as claimed in claim 1, wherein, The adjacent two blade pads mounted in the mounting grooves of the same upper knife holder are vertically crossed at the intersection.

3. A multi-knife trim and shear assembly as claimed in claim 2, wherein, The blade pad forms a protrusion and a groove in the vertical direction at the intersection. The protrusion of the blade pad is clamped into the groove of the adjacent blade pad. The protrusion of the adjacent blade pad is clamped into the groove of the blade pad.

4. A multi-knife trim and shear assembly as claimed in claim 1 wherein, A horizontal through hole is arranged in the middle of the shearing blade for the fixed screw to pass through. A counterbore is arranged on both sides of the through hole; the counterbore is a hinge hole. A pin hole is arranged outside the mounting screw hole on the upper knife holder for the fixed screw to pass through; the pin hole is a hinge hole. The pin hole on the upper knife holder and the counterbore on the inner side of the shearing blade are coaxial and have the same inner diameter. A pin cylinder is arranged in the pin hole and the counterbore penetrating therethrough. The outer side of the pin cylinder is a cylindrical surface, which is in transition fit with the hinge hole. The inner side of the pin cylinder is provided with a through hole for the fixed screw to pass through.

5. A multi-knife trimming and shearing assembly as claimed in claim 4, wherein, An inner and outer threaded sleeve is arranged. The inner and outer threaded sleeve is a cylindrical threaded sleeve, which has a cylindrical body, an outer thread is arranged on the outer wall of the cylindrical body, and an inner thread is arranged on the inner wall of the cylindrical body. The outer thread is screwed into the mounting screw hole. The thread of the fixed screw is screwed into the inner thread.

6. A multi-knife trim and shear assembly as claimed in claim 1 wherein, Cast cavities are arranged on both sides of the upper part of the upper knife holder.

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