A high-precision shearing machine for processing plate heat exchangers

Abstract

The present invention relates to the field of shearing technology, and in particular provides a high-precision shearing machine for processing plate heat exchangers, comprising: a frame; a blade having an inclined blade edge; a first pressing device and a second pressing device, respectively arranged on both sides of the blade, for pressing the plate; wherein the first pressing device comprises a plurality of pressing assemblies, and the plurality of pressing assemblies pull the plate in a first direction away from the blade; the plurality of pressing assemblies are configured to release the pulling action on the plate in the first direction one by one according to the shearing direction and shearing progress of the blade during the shearing process of the blade. The solution of the present invention utilizes the pressing assemblies to pull the plate, so that the plate is tensioned, thereby improving the flatness of the plate and reducing the risk of deformation of the plate. During the shearing process, the pulling action on the plate is released one by one, so that the cut portion of the plate is no longer subjected to the pulling action in the first direction, thereby avoiding the plate from being torn, and further ensuring the flatness of the cut surface of the plate.

Description

Technical Field

[0001] The invention relates to the field of shearing technology, in particular to a high-precision shearing machine for processing a plate heat exchanger. Background Art

[0002] Plate heat exchangers are highly efficient heat exchangers constructed from a series of stacked, corrugated metal sheets. Therefore, their production requires shearing a large number of sheets. However, the sheets used to make plate heat exchangers are thin and have low rigidity. Existing shearing machines are prone to deformation during the shearing process. This deformation can easily lead to quality issues, hindering subsequent stamping processes, reducing the final product's yield, and increasing processing costs. Summary of the Invention

[0003] The object of the present invention is to reduce the risk of deformation of sheet materials during shearing.

[0004] In particular, the present invention provides a high-precision shearing machine for processing plate heat exchangers, comprising: a frame on which a plate to be sheared is placed; a blade movably arranged on the frame in a vertical direction for shearing the plate; the blade has an inclined blade edge; a first clamping device and a second clamping device, respectively arranged on both sides of the blade for clamping the plate; wherein the first clamping device comprises a plurality of clamping assemblies spaced apart along the length direction of the blade, the plurality of clamping assemblies clamp the plate and pull the plate in a first direction away from the blade; the plurality of clamping assemblies are configured to release the pulling effect on the plate in the first direction one by one according to the shearing direction and shearing progress of the blade during the shearing process of the blade.

[0005] Furthermore, the pressing assembly is further configured to release the pulling action on the sheet in the first direction while pulling the sheet in a second direction away from the shearing direction of the blade.

[0006] Furthermore, the clamping assembly includes: a first wedge block, which is movably arranged on one side of the blade in a vertical direction, and a baffle is provided at the bottom end of the first wedge block; a second wedge block is arranged on the side of the first wedge block away from the blade, the wedge surface of the second wedge block abuts against the wedge surface of the first wedge block, and the bottom surface of the second wedge abuts against the baffle; a shell is arranged on the side of the second wedge block away from the blade, and its top is connected to the second wedge block, and a pulling wheel for pressing the plate is provided at the bottom; the pulling wheel is configured to be movable relative to the shell, and a first spring is provided between the pulling wheel and the shell; the first wedge block is configured to move downward in the vertical direction after the pulling wheel presses the plate, thereby pressing the second wedge block to drive the shell to move in the first direction, and through the elastic force of the first spring, the pulling wheel pulls the plate in the first direction.

[0007] Furthermore, the pulling wheel includes: a rod body passing through the shell along a first direction; two friction wheels respectively arranged at both ends of the rod body and abutting against the plate; wherein the first spring is arranged between the shell and one of the friction wheels.

[0008] Furthermore, the pulling wheel also includes: a sleeve roller, which is sleeved on the rod body; one end of the first spring is connected to a friction wheel, and the other end is connected to the sleeve roller.

[0009] Furthermore, an inclined convex strip is provided on the side of the blade facing the first wedge block, and the inclination direction of the convex strip is consistent with the inclination direction of the blade; a first groove is provided on the side wall of the first wedge block facing the blade, and a first through hole is provided at the bottom of the first groove; a first top block and a second spring are provided in the first groove, one end of the first top block extends into the first through hole, and the other end extends out of the first groove under the elastic force of the second spring; a second groove is provided on the side wall of the second wedge block away from the first wedge block, a second through hole is provided at the bottom of the second groove, and a limiting groove is provided on the groove wall of the second groove; a rotating wheel is fixedly connected to the top of the shell, the rotating wheel part extends into the second groove, and a limiting groove adapted to the limiting groove is provided on the outer side wall of the rotating wheel. The cam is configured to move the first push block toward the rear of the blade and to release the second push block from the rear of the blade, thereby releasing the first push block from the rear of the blade.

[0010] Furthermore, the blade is configured to shear to the plate area corresponding to the first top block after the convex strip is separated from the first top block.

[0011] Furthermore, the end of the first top block close to the blade is wedge-shaped, and the top end of the convex strip is also wedge-shaped.

[0012] Furthermore, the high-precision shearing machine for processing plate heat exchangers also includes: a mounting plate, which is arranged on the frame, located on the side of the shell away from the blade, and is provided with a plurality of vertical elliptical holes; a limiting rod is provided on the side of the shell facing the mounting plate, the limiting rod is opposite to the center of the rotating wheel, and the limiting rod passes through the corresponding elliptical hole; the part of the rotating wheel extending out of the second groove is provided with gear teeth; a rack meshing with the gear teeth is provided on the side wall of the second wedge block away from the first wedge block; the rotating wheel is configured to move downward and drive the shell to rotate in the process of downward movement of the second wedge block, with the cooperation of the gear teeth and the rack, so that the pulling wheel pulls the plate in the second direction.

[0013] Furthermore, the clamping assembly also includes: a first push rod, which is arranged in the shell and abuts against the end face of the second push block, and a countersunk hole is provided at the bottom of the first push rod, and a compression spring is provided in the countersunk hole; a second push rod is arranged in the shell, one end extends into the countersunk hole and abuts against the compression spring, and the other end abuts against the pulling wheel; the first push rod is configured to move under the pressure of the second push block and press the compression spring to make the second push rod close to the pulling wheel.

[0014] The beneficial effects of the present invention are:

[0015] The high-precision shearing machine for plate heat exchanger processing of the present invention provides a first clamping device and a second clamping device on either side of the blade. The clamping assembly of the first clamping device pulls the plate in a first direction away from the blade, thereby tensioning the plate and improving its flatness while reducing the risk of deformation. During the shearing process, the multiple clamping assemblies release their pulling force on the plate one by one according to the shearing direction and progress of the blade, freeing the cut portion of the plate from any pulling force, thereby preventing tearing and ensuring the flatness of the cut surface.

[0016] Furthermore, the high-precision shearing machine for plate heat exchanger processing of the present invention configures the clamping assembly to pull the plate in a second direction away from the shearing direction of the blade while releasing the pulling action in the first direction, so that the cut part of the plate is tensioned in the second direction parallel to the shearing direction, thereby further reducing the risk of tearing of the plate, improving the flatness of the plate, and reducing the risk of deformation of the plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. In the accompanying drawings:

[0018] Figure 1 2. It is a structural schematic diagram of a high-precision shearing machine for processing a plate heat exchanger according to one embodiment of the present invention;

[0019] Figure 2 This is an exploded schematic diagram of a high-precision shearing machine for processing a plate heat exchanger according to one embodiment of the present invention;

[0020] Figure 3 yes Figure 2 Schematic enlarged view of region A;

[0021] Figure 4 2 is a schematic structural diagram from another angle of a high-precision shearing machine for processing a plate heat exchanger according to an embodiment of the present invention;

[0022] Figure 5 It is along Figure 4 A schematic cross-sectional view taken along the cutting line BB in FIG.

[0023] Figure 6 yes Figure 5 Schematic enlargement of the middle region C;

[0024] Figure 7 yes Figure 6 Schematic diagram of the structure of the high-precision shearing machine for plate heat exchanger processing after the first wedge moves downward;

[0025] Figure 8 yes Figure 6 A schematic diagram of the structure of a high-precision shearing machine for plate heat exchanger processing when the convex strip presses against the first stopper;

[0026] Figure 9 yes Figure 6 Schematic diagram of the structure of the high-precision shearing machine for plate heat exchanger processing after the convex strip is separated from the first stop;

[0027] Figure 10 2 is a schematic structural diagram of a first wedge block and a second wedge block according to an embodiment of the present invention.

[0028] in:

[0029] 01, plate; 100, frame; 110, mounting plate; 111, elliptical hole; 120, support platform; 130, crossbeam; 131, control cylinder; 132, positioning column; 200, blade; 210, knife edge; 220, rib; 230, drive device; 300, first clamping device; 310, clamping assembly; 320, first wedge; 321, first groove; 322, first through hole; 323, first top block; 324, second spring; 325, slide; 326, positioning hole; 327, pressure block; 328, baffle; 330, second Wedge block; 331, second groove; 332, second through hole; 333, limiting groove; 334, protrusion; 335, rack; 340, shell; 341, first push rod; 342, countersunk hole; 343, compression spring; 344, second push rod; 350, pulling wheel; 351, first spring; 352, rod body; 353, friction wheel; 354, sleeve roller; 360, rotating wheel; 361, limiting plate; 362, third groove; 363, second push block; 364, third spring; 365, gear teeth; 370, limiting rod; 400, second clamping device. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] The terms "first" and "second" herein are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being described. "Multiple" means at least two, for example, two, three, etc., unless otherwise specifically defined. When a feature "includes or comprises" one or more of the features it encompasses, unless otherwise specifically stated, this indicates that other features are not excluded and may further be included.

[0032] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," "coupled," and the like should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise expressly limited. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0033] It should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0034] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0035] Refer to the following Figures 1 to 10 To describe a high-precision shearing machine for processing plate heat exchangers provided by the present invention.

[0036] This embodiment first provides a high-precision shearing machine for processing a plate heat exchanger. The high-precision shearing machine for processing a plate heat exchanger generally includes: a frame 100, a blade 200, a first pressing device 300 and a second pressing device 400.

[0037] A plate 01 to be sheared is placed on the frame 100. A blade 200 is movably arranged on the frame 100 in a vertical direction for shearing the plate 01. The blade 200 has an inclined blade edge 210. The first pressing device 300 and the second pressing device 400 are respectively arranged on both sides of the blade 200 for pressing the plate 01. The first pressing device 300 includes a plurality of pressing assemblies 310 arranged at intervals along the length direction of the blade 200. The plurality of pressing assemblies 310 press the plate 01 and pull the plate 01 in a first direction away from the blade 200. The plurality of pressing assemblies 310 are configured to release the pulling effect on the plate 01 in the first direction one by one according to the shearing direction and shearing progress of the blade 200 during the shearing process of the blade 200.

[0038] This embodiment provides a first pressing device 300 and a second pressing device 400 on either side of the blade 200. These devices work together to press the sheet material 01, ensuring the cutting accuracy of the blade 200. The pressing assembly 310 of the first pressing device 300 pulls the sheet material 01 in a first direction away from the blade 200, thereby tensioning the sheet material 01 and improving the flatness of the sheet material 01 and reducing the risk of deformation. During the shearing process, the multiple pressing assemblies 310 release their pulling force on the sheet material 01, one by one, based on the shearing direction and progress of the blade 200. As the cut moves, the pressing assemblies 310 near the cut gradually release their pulling force on the sheet material 01 in the first direction. This releases the pulling force on the cut portion of the sheet material 01, preventing tearing of the sheet material 01 at the cut and ensuring the flatness of the cut surface of the sheet material 01. The plurality of pressing assemblies 310 are spaced apart along the length direction of the blade 200 , so that the pulling force on the plate 01 is more uniform, thereby improving the pulling effect.

[0039] The blade 200 has an inclined cutting edge 210, which reduces the contact area between the cutting edge 210 and the sheet material 01, improving shearing efficiency and effectiveness. The blade 200 is driven vertically by a drive device 230. In some embodiments, the drive device 230 can be configured as a drive shaft equipped with an eccentric wheel 360. In other embodiments, the drive device 230 can also be configured as a motor or a cylinder.

[0040] like Figure 1 As shown, the frame 100 may generally be provided with a support platform 120, and the plate 01 to be sheared is placed on the support platform 120. The second pressing device 400 is preferably configured as a long strip pressing plate adapted to the size of the plate 01 to ensure a pressing effect.

[0041] In some embodiments, the support platform 120 is fixedly mounted on the frame 100. The first pressing device 300 and the second pressing device 400 can move downward as a whole to cooperate with the support platform 120 to press the plate 01.

[0042] In other embodiments, the support platform 120 can be raised and lowered in the vertical direction. The support platform 120 moves vertically upward, thereby driving the plate 01 to move upward, and cooperates with the first pressing device 300 and the second pressing device 400 to jointly press the plate 01.

[0043] The pressing assembly 310 is further configured to release the pulling action on the sheet material 01 in the first direction while pulling the sheet material 01 in a second direction away from the shearing direction of the blade 200 .

[0044] The solution of this embodiment configures the clamping assembly 310 to pull the plate 01 in a second direction away from the shearing direction of the blade 200 while releasing the pulling action in the first direction, so that the cut portion of the plate 01 is tensioned in the second direction parallel to the shearing direction, thereby further reducing the risk of tearing of the plate 01, improving the flatness of the plate 01, and reducing the risk of deformation of the plate 01.

[0045] The pressing assembly 310 may generally include a first wedge block 320 , a second wedge block 330 and a housing 340 .

[0046] A first wedge block 320 is vertically movably disposed on one side of the blade 200, and a baffle 328 is disposed at the bottom end of the first wedge block 320. A second wedge block 330 is disposed on the side of the first wedge block 320 facing away from the blade 200. The wedge surface of the second wedge block 330 abuts against the wedge surface of the first wedge block 320, and the bottom surface of the second wedge block 330 abuts against the baffle 328. A housing 340 is disposed on the side of the second wedge block 330 facing away from the blade 200, and is connected to the second wedge block 330 at its top. A pulling wheel 350 is disposed at its bottom for pressing against the sheet material 01. The pulling wheel 350 is configured to be movable relative to the housing 340, and a first spring is disposed between the pulling wheel 350 and the housing 340. The first wedge block 320 is configured to move downward in the vertical direction after the pulling wheel 350 presses the plate 01, thereby pressing the second wedge block 330 to drive the shell 340 to move in the first direction, and through the elastic force of the first spring 351, the pulling wheel 350 pulls the plate 01 in the first direction.

[0047] like Figure 7 As shown, in the solution of this embodiment, the first spring 351 is configured as a compression spring and is provided on the side of the housing 340 away from the blade 210 .

[0048] The solution of this embodiment, by providing a first wedge block 320 and a second wedge block 330, utilizes the wedge-shaped surfaces of the first wedge block 320 and the second wedge block 330 to abut against each other, so that the power of the first wedge block 320 moving in the vertical direction is smoothly transmitted to the second wedge block 330. The inclined pressure between the first wedge block 320 and the second wedge block 330 not only pushes the second wedge block 330 to move in the horizontal first direction, but also presses the plate 01 downward, further improving the compression effect of the plate 01. The second wedge block 330 moves in the first direction, driving the housing 340 to move relative to the pulling wheel 350 and compressing the compression spring. Under the pressure of the compressed compression spring, the pulling wheel 350 generates a large frictional resistance with the plate 01, pulling the plate 01, thereby improving the flatness of the plate 01 and reducing the risk of deformation of the plate 01.

[0049] In other embodiments, the first spring 351 can be configured as a tension spring and disposed on a side of the housing 340 close to the blade 200. When the housing 340 moves in the first direction, the tension spring is stretched, so that the pulling wheel 350 pulls the plate 01 under the tension of the tension spring.

[0050] Preferably, the portion of the pulling wheel 350 that contacts the plate 01 is made of a material with a high coefficient of friction to ensure sufficient friction between the pulling wheel 350 and the plate 01. A first spring disposed between the pulling wheel 350 and the housing 340 prevents the pulling wheel 350 from slipping relative to the plate 01 while transmitting torque, thereby ensuring the pulling effect of the pulling wheel 350 on the plate 01.

[0051] like Figure 2 As shown, in this embodiment, a control cylinder 131 can generally be provided on the crossbeam 130 of the frame 100 to control the up and down movement of the first wedge block 320. A positioning post 132 can be provided below the crossbeam 130, and a corresponding positioning hole 326 can be provided on the first wedge block 320. The positioning post 132 extends into the positioning hole 326 to guide and limit the movement of the first wedge block 320.

[0052] The plurality of first wedge blocks 320 may be integrally formed for ease of assembly.

[0053] In other embodiments, the plurality of first wedge blocks 320 may exist separately and be arranged in a one-to-one correspondence with the plurality of second wedge blocks 330 .

[0054] The pulling wheel 350 may generally include a rod body 352 and two friction wheels 353 .

[0055] The rod 352 passes through the housing 340 along a first direction. Two friction wheels 353 are respectively provided at both ends of the rod 352 and abut against the plate 01; wherein the first spring 351 is provided between the housing 340 and one friction wheel 353 of the blade 200.

[0056] like Figure 7 As shown, in the solution of this embodiment, the first spring 351 is configured as a compression spring and is arranged between the housing 340 and the friction wheel 353 away from the blade 200.

[0057] In this embodiment, the rod 352 of the pulling wheel 350 is inserted through the bottom of the housing 340, thereby ensuring that the housing 340 can move relative to the rod 352. A first spring is provided between the friction wheel 353, which is away from the blade 200, and the housing 340 to prevent the friction wheel 353 from slipping relative to the plate 01, thereby ensuring the pulling effect of the friction wheel 353 on the plate 01.

[0058] In other embodiments, the first spring 351 may be configured as a tension spring and disposed between the housing 340 and the friction wheel 353 close to the blade 200 .

[0059] Preferably, the friction wheel 353 is made of a material with a large friction coefficient.

[0060] The pulling wheel 350 may generally further include a sleeve roller 354. The sleeve roller 354 is sleeved on the rod body 352. One end of the first spring is connected to a friction wheel 353 of the blade 200, and the other end is connected to the sleeve roller 354.

[0061] In the solution of this embodiment, a sleeve roller 354 is provided on the rod body 352 and the first spring is arranged between the friction wheel 353 and the sleeve roller 354 , thereby avoiding direct contact between the first spring and the housing 340 and reducing the risk of wear of the housing 340 .

[0062] Blade 210 friction wheel 353 shell 340 second wedge 330 shell 340 sleeve roller 354 friction wheel 353 plate 01 In some preferred embodiments, the sleeve roller 354 and the rod body 352 are connected by a key to ensure that the sleeve roller 354 can move relative to the rod body 352 under the pressure of the shell 340 while preventing the sleeve roller 354 from rotating relative to the rod body 352.

[0063] The blade 200 is provided with an inclined ridge 220 on the side facing the first wedge block 320. The inclination direction of the ridge 220 is consistent with the inclination direction of the blade edge 210. A first groove 321 is provided on the side wall of the first wedge block 320 facing the blade 200. A first through-hole 322 is provided at the bottom of the first groove 321. A first top block 323 and a second spring 324 are provided within the first groove 321. One end of the first top block 323 extends into the first through-hole 322, and the other end extends out of the first groove 321 under the elastic force of the second spring. A second groove 331 is provided on the side wall of the second wedge block 330 facing away from the first wedge block 320. A second through-hole 332 is provided at the bottom of the second groove 331, and a limiting groove 333 is provided on the wall of the second groove 331. A rotating wheel 360 is fixedly connected to the top of the housing 340. The rotating wheel 360 partially extends into the second groove 331. A limiting plate 361 is provided on the outer wall of the rotating wheel 360, which adapts to the limiting groove 333. A third groove 362 is provided in the rotating wheel 360. A second top block 363 and a third spring 364 are provided in the third groove 362. The end of the second top block 363 near the blade 210 passes through the rotating wheel 360 and extends into the second through hole 332 under the elastic force of the third spring 364.

[0064] like Figure 7-Figure 9 As shown, in the embodiment, the second spring 324 is configured as a compression spring and is disposed on the end of the first top block 323 facing away from the blade 200. One end of the compression spring abuts the first stop plate of the first top block 323, and the other end abuts the bottom of the first groove 321. The third spring 364 is configured as a tension spring and is disposed on the side of the second top block 363 closer to the blade 200. One end of the tension spring abuts the second stop plate of the second top block 363, and the other end abuts the bottom of the third groove 362.

[0065] In this embodiment, a third spring 364 is used to force the second top block 363 into the second through hole 332, thereby limiting the position of the second wedge block 330 and preventing it from moving downward along with the first wedge block 320. This improves structural stability and ensures a pulling effect. The limiting groove 333 and limiting plate 361 define the relative position of the housing 340 and the second wedge block 330, ensuring that the housing 340 and the second wedge block 330 can only move synchronously in the horizontal direction.

[0066] In other embodiments, the second spring 324 can also be configured as a tension spring, disposed at an end of the first top block 323 near the blade 200. One end of the tension spring abuts the first limit plate of the first top block 323, and the other end abuts the first stop at the notch of the first groove 321. The third spring 364 can also be configured as a compression spring, one end of the compression spring abuts the second limit plate of the second top block 363, and the other end abuts the second stop at the notch of the third groove 362.

[0067] The first wedge block 320 is configured to move downward until the first through-hole 322 is aligned with the second through-hole 332 before the protrusion 220 pushes the first push block 323. The protrusion 220 is configured to move downward and push the first push blocks 323 one by one during the shearing process of the blade 200. The first push block 323 extends into the second through-hole 332, causing the second push block 363 to disengage from the second through-hole 332. After the protrusion 220 disengages from the first push block 323, the first push block 323 returns to its original position under the elastic force of the second spring. The second wedge block 330, under the action of gravity, moves downward along the wedge-shaped surface of the first wedge block 320, driving the housing 340 away from the first direction and relaxing the first spring 351.

[0068] In this embodiment, the first wedge block 320 is configured to move downward to align the first through hole 322 with the second through hole 332 before the protruding strip 220 pushes the first push block 323. This ensures that the first push block 323 can smoothly extend into the second through hole 332 under the push of the protruding strip 220. In some preferred embodiments, the first wedge block 320 can be configured so that its extreme downward movement position just aligns the first through hole 322 with the second through hole 332.

[0069] This embodiment employs an inclined ridge 220 provided on the blade 200. This allows the ridge 220 to move downward synchronously with the blade 200 as it moves downward to shear the sheet material 01. Because the ridge 220's inclination aligns with the blade edge 210's, as the ridge 220 moves downward, it supports the plurality of first push blocks 323 one by one along the shearing direction of the blade edge 210. Once the first push blocks 323 are pushed into the second through-hole 332, they force the second push blocks 363 out of the second through-hole 332.

[0070] The protruding strip 220 continues to move downward, disengaging the first push block 323. The first push block 323 returns to its original position under the elastic force of the second spring 324. At this point, the second wedge block 330 is released from its vertical restraint. Under its own weight, the second wedge block 330 moves downward along the wedge-shaped surface, driving the housing 340 away from the first direction. After the second wedge block 330 moves downward until it abuts the stop plate 328, the first spring 351 relaxes, releasing the pulling wheel 350 from pulling the sheet material 01 in the first direction.

[0071] like Figure 10As shown, in the embodiment, the wedge-shaped surfaces of the first wedge block 320 and the second wedge block 330 are respectively provided with a matching sliding groove 325 and a protrusion 334, so that the second wedge block 330 moves downward along the inclined direction of the wedge surface under the action of gravity, thereby ensuring that the housing 340 moves back and forth a consistent distance in the first direction and completely relaxes the first spring 351. The second stopper preferably fits tightly with the groove wall of the third groove 362. The second stopper passes through the rotating wheel 360 and cooperates with the groove bottom of the third groove 362 to form a damping hole, thereby reducing the speed at which the second top block 363 returns to its original position. Before the second top block 363 contacts the second wedge block 330, the second wedge block 330 has already moved downward to the point where the second through hole 332 and the second top block 363 are misaligned, thereby ensuring smooth downward movement of the second wedge block 330.

[0072] In this embodiment, the inclined ridges 220 cooperate with the first wedges 320 to gradually move the second wedges 330 downward, causing the pulling wheels 350 to gradually release the pulling action on the sheet 01 in the first direction. The cut portion of the sheet 01 is no longer subject to the pulling action in the first direction, thus preventing tearing of the sheet 01 at the cut and ensuring the smoothness of the cut surface of the sheet 01.

[0073] The blade 200 is configured to shear the plate 01 area corresponding to the first top block 323 after the protruding strip 220 is separated from the first top block 323 .

[0074] In the solution of this embodiment, the blade 200 only cuts to the area of ​​the plate 01 corresponding to the first top block 323 after the convex strip 220 is separated from the first top block 323, so that during the cutting process of the blade 200, when the incision moves to the area of ​​the plate 01 corresponding to the bottom of the first top block 323, the first top block 323 has been separated from the convex strip 220 and reset, and the corresponding pulling wheel 350 has released the pulling effect on the plate 01 in the first direction, thereby ensuring that the plate 01 near the incision is not affected by the pulling effect, thereby reducing the risk of tearing and deformation at the incision of the plate 01.

[0075] The end of the first top block 323 close to the blade 200 is wedge-shaped, and the top of the protruding strip 220 is also wedge-shaped.

[0076] In this embodiment, the ends of the first top block 323 and the protrusion 220 are both wedge-shaped. This allows the protrusion 220 to push against the first top block 323 with its wedge-shaped end surface during downward movement, resulting in smoother movement of the first top block 323. Preferably, the wedge-shaped end of the first top block 323 and the wedge-shaped end of the protrusion 220 mate with each other, maintaining a consistent inclination angle, thereby reducing the risk of wear on the first top block 323 and the protrusion 220.

[0077] The high-precision shearing machine for processing a plate heat exchanger may generally further include a mounting plate 110 .

[0078] The mounting plate 110 is disposed on the frame 100, on the side of the housing 340 facing away from the blade 200, and is provided with a plurality of vertical elliptical holes 111. A limiting rod 370 is provided on the side of the housing 340 facing the mounting plate 110. The limiting rod 370 is opposite to the center of the rotating wheel 360, and the limiting rod 370 passes through the corresponding elliptical hole 111. The portion of the rotating wheel 360 extending out of the second groove 331 is provided with gear teeth 365; a rack 335 is provided on the side wall of the second wedge block 330 facing away from the first wedge block 320, which engages with the gear teeth 365. The rotating wheel 360 is configured so that, during the downward movement of the second wedge block 330, the gear teeth 365 and the rack 335 cooperate to move downward and drive the housing 340 to rotate, so that the pulling wheel 350 pulls the plate 01 in the second direction.

[0079] like Figure 2-Figure 3 As shown, rack 335 is positioned on the side of rotating wheel 360 facing away from the second direction. The second wedge 330 moves downward, releasing the pulling force on sheet 01 in the first direction and simultaneously driving rotating wheel 360 downward. As rotating wheel 360 moves downward, the rack 335 and gear teeth 365 cooperate to rotate housing 340 in the second direction. Driven by housing 340, pulling wheel 350 presses against sheet 01 and pulls it in the second direction, tensioning the cut portion of sheet 01 in the second direction. This reduces the risk of tearing and improves the flatness of sheet 01.

[0080] like Figure 2 As shown, in this embodiment, multiple first wedge blocks 320 are integrally formed, and a pressure block 327 may be provided at the bottom of each first wedge block 320. Pressure block 327 is located near the end of blade 210. After the first wedge blocks 320 move downward, pressure block 327 presses against sheet material 01, cooperating with the pulling action of pulling wheel 350 in the second direction, thereby improving the tensioning effect of sheet material 01, enhancing the flatness of sheet material 01, and reducing the risk of deformation of sheet material 01.

[0081] The pressing assembly 310 may generally further include a first push rod 341 and a second push rod 344 .

[0082] A first push rod 341 is disposed within the housing 340 and abuts the end surface of the second push block 363. A countersunk hole 342 is provided at the bottom of the first push rod 341, and a compression spring 343 is disposed within the countersunk hole 342. A second push rod 344 is disposed within the housing 340, with one end extending into the countersunk hole 342 and abutting the compression spring 343, and the other end abutting the pulling wheel 350. The first push rod 341 is configured to move under the pressure of the second push block 363, pressing against the compression spring 343 and causing the second push rod 344 to contact the pulling wheel 350.

[0083] like Figure 7-Figure 9 As shown, in this embodiment, the contact surface between the first push rod 341 and the second push block 363 is a wedge-shaped surface. When the second push block 363 moves away from the blade 200, the first push rod 341 is pressed toward the pulling wheel 350. The first pull rod squeezes the compression spring 343, increasing the contact force between the second pull rod and the pulling wheel 350.

[0084] As the second wedge block 330 moves downward, the rotating wheel 360 moves downward, driving the housing 340 to rotate. When the housing 340 begins to rotate, the pulling wheel rolls on the surface of the plate 01 and rotates relative to the housing 340. As the second wedge block 330 continues to move downward, the second push block 363 penetrates deeper into the housing 340, causing the first push rod 341 to continuously compress the compression spring 343. As the compression of the compression spring 343 increases, the pressure exerted on the second push rod 344 by the compression spring 343 increases, causing the rotational friction between the second push rod 344 and the pulling wheel 350 to increase, until the pulling wheel 350 stops rotating relative to the second push rod 344. The pressure exerted by the compression spring 343 on the second push rod 344 is transmitted to the plate 01 through the pulling wheel 350. As the compression of the compression spring 343 increases, the pressure between the pulling wheel 350 and the plate 01 also increases continuously, causing the friction between the pulling wheel 350 and the plate 01 to increase continuously, thereby enabling the pulling wheel 350 to pull the plate 01 in the second direction.

[0085] The specific working process of the high-precision shearing machine for plate heat exchanger processing provided by the present invention is described in combination with the above embodiments:

[0086] Before shearing begins, the first and second pressing devices 300 and 400 cooperate with the support platform 120 to compress the sheet material 01, securing it. Subsequently, the first wedge block 320 is driven downward, pressing the second wedge block 330 in the first direction away from the blade 200. The second wedge block 330 drives the housing 340, and via the first spring 351, the pulling wheel 350 pulls the sheet material 01 in the first direction. After the first wedge block 320 stops moving downward, the first through-hole 322 and the second through-hole 332 face each other.

[0087] The blade 200 is driven downward, utilizing its angled cutting edge 210 to shear from one end of the sheet material 01 toward the other. As the blade 200 moves downward, the ridges 220 push the first push blocks 323 one by one in the shearing direction. Under the pressure of the ridges 220, the first push blocks 323 extend into the second through-hole 332, disengaging the second push blocks 363 from the second through-hole 332. As the ridges 220 continue to move downward and disengage from the first push blocks 323, the first push blocks 323, under the action of the second spring 324, disengage from the second through-hole 332. The second wedge block 330, under its own weight, moves downward at an angle along the wedge-shaped surface of the first wedge block 320. The downward movement of the second wedge block 330 drives the housing 340 closer to the blade 200, causing the first spring 351 to reset, thereby releasing the pulling wheel 350 from pulling the sheet material 01 in the first direction.

[0088] As the second wedge block 330 moves downward, it also drives the rotating wheel 360 downward and rotates via the rack 335 and gear teeth 365. The rotating wheel 360 drives the housing 340 and the pulling wheel 350 to rotate in a second direction, away from the shearing direction, causing the pulling wheel 350 to pull the sheet 01 in the second direction, away from the shearing direction. As the second wedge block 330 moves downward, it also pushes the second push block 363, causing it to penetrate deeper into the housing 340 and press against the first push rod 341 in the housing 340. The first push block 323 is pressed against the second push rod 344, compressing the compression spring 343 between the first push rod 341 and the second push rod 344. This increases the pressure between the second push rod 344, the pulling wheel 350, and the sheet 01, thereby increasing the friction between the pulling wheel 350 and the sheet 01 and improving the pulling effect.

[0089] After the pulling force of the pulling wheel 350 on the plate 01 is changed from the first direction to the second direction, the blade 200 just cuts to the vicinity of the pulling wheel 350, thereby reducing the risk of tearing of the plate 01 and improving the shearing quality.

[0090] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A high-precision shearing machine for plate heat exchanger processing, characterized in that: include: a frame on which the sheets to be cut are placed; A blade is movably arranged on the frame in a vertical direction and is used for shearing plates; the blade has an inclined cutting edge; The first pressing device and the second pressing device are respectively arranged on both sides of the blade for pressing the plate; wherein, The first pressing device includes a plurality of pressing assemblies spaced apart along the length of the blade, the plurality of pressing assemblies pressing the sheet material and pulling the sheet material in a first direction away from the blade; the plurality of pressing assemblies are configured to release the pulling action on the sheet material in the first direction one by one according to the shearing direction and shearing progress of the blade during the shearing process of the blade; the pressing assemblies are further configured to pull the sheet material in a second direction away from the shearing direction of the blade while releasing the pulling action on the sheet material in the first direction; The pressing assembly comprises: a first wedge block movably disposed on one side of the blade in a vertical direction, and a baffle being disposed at a bottom end of the first wedge block; a second wedge block, arranged on a side of the first wedge block away from the blade, the wedge surface of the second wedge block abutting against the wedge surface of the first wedge block, and the bottom surface of the second wedge block abutting against the baffle; a housing, disposed on a side of the second wedge away from the blade, the top of the housing being connected to the second wedge, and the bottom of the housing being provided with a pulling wheel for pressing the plate; the pulling wheel being configured to be movable relative to the housing, and a first spring being provided between the pulling wheel and the housing; The first wedge block is configured to move downward in the vertical direction after the pulling wheel presses the plate, thereby pressing the second wedge block to drive the shell to move in the first direction, and through the elastic force of the first spring, the pulling wheel pulls the plate in the first direction.

2. The high-precision shearing machine for plate heat exchanger processing according to claim 1 is characterized in that: The pulling wheel comprises: a rod body passing through the housing along the first direction; Two friction wheels are respectively arranged at the two ends of the rod body and abut against the plate; wherein the first spring is arranged between the shell and one of the friction wheels.

3. The high-precision shearing machine for plate heat exchanger processing according to claim 2, characterized in that: The pulling wheel also includes: A sleeve roller, sleeved on the rod body; One end of the first spring is connected to one of the friction wheels, and the other end is connected to the sleeve roller.

4. The high-precision shearing machine for plate heat exchanger processing according to claim 1, characterized in that: The blade is provided with an inclined convex strip on one side facing the first wedge, and the inclined direction of the convex strip is consistent with the inclined direction of the blade edge; A first groove is provided on the side wall of the first wedge block facing the blade, and a first through hole is provided at the bottom of the first groove; a first top block and a second spring are provided in the first groove, one end of the first top block extends into the first through hole, and the other end extends out of the first groove under the elastic force of the second spring; A second groove is provided on the side wall of the second wedge block facing away from the first wedge block, a second through hole is provided at the bottom of the second groove, and a limiting groove is provided on the groove wall of the second groove; A rotating wheel is fixedly connected to the top of the housing, the rotating wheel partially extends into the second groove, and a limiting plate adapted to the limiting groove is provided on the outer side wall of the rotating wheel; a third groove is provided in the rotating wheel, a second top block and a third spring are provided in the third groove, and an end of the second top block close to the blade passes through the rotating wheel and extends into the second through hole under the elastic force of the third spring; The first wedge block is configured to move downward to make the first through hole face the second through hole before the convex strip pushes the first push block; The convex strip is configured to move downward and push the plurality of first top blocks one by one during the shearing process of the blade; the first top block extends into the second through hole, so that the second top block is separated from the second through hole; After the convex strip is separated from the first top block, the first top block is reset under the elastic force of the second spring, and the second wedge block moves downward along the wedge surface of the first wedge block under the action of gravity, driving the housing away from the first direction, so that the first spring is relaxed.

5. The high-precision shearing machine for plate heat exchanger processing according to claim 4, characterized in that: The blade is configured to shear to the plate area corresponding to the first top block after the convex strip is separated from the first top block.

6. The high-precision shearing machine for plate heat exchanger processing according to claim 4, characterized in that: The end of the first top block close to the blade is wedge-shaped, and the top end of the convex strip is also wedge-shaped.

7. The high-precision shearing machine for plate heat exchanger processing according to claim 4, characterized in that: Also includes: a mounting plate, arranged on the frame, located on a side of the housing facing away from the blade, and having a plurality of vertical elliptical holes; A limiting rod is provided on one side of the housing facing the mounting plate, the limiting rod is opposite to the center of the rotating wheel, and the limiting rod passes through the corresponding elliptical hole; The portion of the rotating wheel extending out of the second groove is provided with gear teeth; the side wall of the second wedge block facing away from the first wedge block is provided with a rack meshing with the gear teeth; The rotating wheel is configured to move downward and drive the housing to rotate under the cooperation of the gear teeth and the rack during the downward movement of the second wedge block, so that the pulling wheel pulls the plate in the second direction.

8. The high-precision shearing machine for plate heat exchanger processing according to claim 4, characterized in that: The compression assembly further comprises: a first push rod, disposed in the housing and abutting against an end surface of the second push block, wherein a countersunk hole is provided at the bottom of the first push rod, and a compression spring is provided in the countersunk hole; a second push rod, disposed in the housing, with one end extending into the countersunk hole and abutting against the compression spring, and the other end abutting against the pulling wheel; The first push rod is configured to move under the pressure of the second push block and press the compression spring so that the second push rod is close to the pulling wheel.

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